JP4935726B2 - Image measuring apparatus, medical image system, and program - Google Patents

Description

  The present invention relates to an image measurement device, a medical image system, and a program.

  Conventionally, in a diagnosis in the medical field such as orthopedics, an image obtained by photographing a patient with radiation such as X-rays is used. The doctor observes and interprets the radiographic image output on the film, marks the position to be measured on the radiographic image with a red pencil to obtain numerical values and angles for diagnosis, and uses a measuring instrument such as a ruler or a protractor. Measure the distance and angle of the marked position.

  In recent years, digitization has progressed also in the medical field, and most of radiographic images generated in hospitals are stored as digital images in a workstation or PACS (Picture Archiving and Communication System). In the case of a digital image, an image is displayed on a monitor screen, and a line used for measurement (hereinafter referred to as an auxiliary line) is manually or automatically specified on this screen, thereby automatically measuring distance, angle, etc. Since the auxiliary line drawn once can be moved, it is possible to greatly reduce the burden required for measurement by doctors and radiographers.

  For example, a CE-angle (Central-edge angle) is used for diagnosis of osteoarthritis of the hip (acetabular dysplasia). Symptoms of osteoarthritis of the hip include pain in daily activities such as hip pain, movement pain, range of motion limitation, and walking problems. The CE angle refers to an angle formed by a vertical line passing through the center of the femoral head and a line passing through the center and the outer edge of the acetabulum. The normal value is 25 degrees or more, and if it is less than 10 degrees, it tends to progress to hip arthropathy.

  FIG. 12 shows an example of a hip joint image obtained by X-ray imaging of the left and right hip joints from the front side of the human body. The left side of FIG. 12 corresponds to the right side of the human body, and the right side of FIG. 12 corresponds to the left side of the human body. When measuring the CE angle, first, a hip joint image is displayed on the monitor screen, and the reference auxiliary line L1 passing through the lower right tear mark lower end 51 and the left lower tear mark lower end 52 on the monitor screen and the center 53 of the right femoral head are displayed. A vertical auxiliary line L2 perpendicular to the street reference auxiliary line L1, a diagonal auxiliary line L3 passing through the center 53 of the right femoral head and the outer rim of the right acetabulum, and a vertical perpendicular to the reference auxiliary line L1 through the center 55 of the left femoral head An oblique auxiliary line L5 passing through the auxiliary line L4, the center 55 of the left femoral head and the outer edge 56 of the left acetabulum is drawn. The right CE angle θ1 is an angle formed by the vertical auxiliary line L2 and the diagonal auxiliary line L3, and the left CE angle θ2 is an angle formed by the vertical auxiliary line L4 and the diagonal auxiliary line L5.

Further, when an angle indicating a feature for use in diagnosis is measured from a medical image, it is necessary to designate the positions of two straight lines that form the angle. When adjusting the positions of the drawn two straight lines later, if the adjustment is permitted only in a pair, only one straight line cannot be drawn or moved. Therefore, in an image measurement apparatus that draws a plurality of straight lines on a medical image displayed on the display unit and measures the angle between the two drawn straight lines, each drawn straight line is independently changed, edited, or deleted. The technique which can do is proposed (refer patent document 1).
JP 2006-192104 A

  However, as described above, since the drawn auxiliary line can be easily moved on the monitor screen, when the movement is performed such that the positional relationship between the drawn vertical auxiliary line and the diagonal auxiliary line is changed, It may be difficult to recognize the correspondence between the vertical auxiliary line and the diagonal auxiliary line and the measurement target, that is, which vertical auxiliary line and the diagonal auxiliary line form the measured CE angle. .

  For example, as shown in FIG. 13 (a), a reference auxiliary line L6 that passes through the lower left and right tear marks on the hip joint image, a vertical auxiliary line L7 that passes through the center of the right femoral head and is perpendicular to the reference auxiliary line L6, and the right femoral head Diagonal line L8 passing through the center of the right acetabulum and the outer edge of the right acetabulum, vertical auxiliary line L9 passing through the center of the left femoral head and perpendicular to the reference auxiliary line L6, and diagonally passing through the center of the left femoral head and the outer edge of the left acetabulum When the auxiliary line L10 is drawn, the angle formed by the vertical auxiliary line L7 and the diagonal auxiliary line L8 is measured as the right CE angle, and the angle formed by the vertical auxiliary line L9 and the diagonal auxiliary line L10 is defined as the left CE angle. It is measured.

  In the CE angle measurement function, generally, the vertical auxiliary line and the diagonal auxiliary line are paired and the position thereof is often moved in units of sets. As shown in FIG. 13B, when the set of the vertical auxiliary line L9 and the diagonal auxiliary line L10 is moved to the left region from the set of the vertical auxiliary line L7 and the diagonal auxiliary line L8, the correspondence between the auxiliary line and the measurement target Since the relationship does not change, the right CE angle is measured as the angle between the vertical auxiliary line L7 and the diagonal auxiliary line L8, and the left CE angle is measured as the vertical auxiliary line L9 and the diagonal auxiliary line L10. The angle between However, in order for the user to make a determination based on the visual arrangement order, the value measured as the right CE angle indicates the angle formed by the vertical auxiliary line L9 and the diagonal auxiliary line L10, and the value measured as the left CE angle is vertical. There is a risk of misdiagnosing that the angle formed by the auxiliary line L7 and the oblique auxiliary line L8 is misrepresented.

  The present invention has been made in view of the above problems in the prior art, and an object thereof is to improve the operability in measuring the CE angle of a hip joint image and to prevent misdiagnosis.

  In order to solve the above-mentioned problem, the invention according to claim 1 displays a hip joint image obtained by photographing the hip joint portion from the front side of the human body on the monitor screen of the display means, and measures the CE angle from the displayed hip joint image. An image measuring device for specifying a position for drawing an auxiliary line for CE angle measurement in the hip joint image displayed on the monitor screen, and based on an operation from the operation unit, the monitor A reference auxiliary line passing through the lower left and right tear marks of the hip joint image displayed on the screen, a first vertical auxiliary line passing through the center of the right femoral head and perpendicular to the reference auxiliary line, the center of the right femoral head, and the outer right acetabulum A first diagonal auxiliary line passing through the edge, a second vertical auxiliary line passing through the center of the left femoral head and perpendicular to the reference auxiliary line, and a second diagonal passing through the center of the left femoral head and the outer edge of the left acetabulum Drawing control for drawing auxiliary lines in order The angle formed between the step and the drawn first vertical auxiliary line and the first diagonal auxiliary line is measured as a right CE angle, and the angle formed between the drawn second vertical auxiliary line and the second diagonal auxiliary line is determined. Measuring means for measuring the left CE angle, and the drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and the monitor from the first vertical auxiliary line. The drawing of the second vertical auxiliary line is permitted only in the area on the right side of the screen, and the designation of the start point of the second diagonal auxiliary line is permitted only on the second vertical auxiliary line.

  The invention according to claim 2 is an image measuring device for displaying a hip joint image obtained by photographing a hip joint portion from the front side of a human body on a monitor screen of a display means and measuring a CE angle from the displayed hip joint image. An operation means for designating a position for drawing a CE angle measurement auxiliary line in the hip joint image displayed on the monitor screen, and a hip joint image displayed on the monitor screen based on an operation from the operation means. Reference auxiliary line that passes through the lower left and right tear marks, a first vertical auxiliary line that passes through the center of the left femoral head and is perpendicular to the reference auxiliary line, and a first oblique auxiliary that passes through the center of the left femoral head and the outer edge of the left acetabulum Drawing control for sequentially drawing a line, a second vertical auxiliary line that passes through the center of the right femoral head and is perpendicular to the reference auxiliary line, and a second oblique auxiliary line that passes through the center of the right femoral head and the outer edge of the right acetabulum Means and said drawn first Measuring means for measuring an angle formed by the straight auxiliary line and the first diagonal auxiliary line as a left CE angle, and measuring an angle formed by the drawn second vertical auxiliary line and the second diagonal auxiliary line as a right CE angle; The drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and the first control line only in the left region of the monitor screen from the first vertical auxiliary line. Drawing of two vertical auxiliary lines is permitted, and designation of the start point of the second diagonal auxiliary line is permitted only on the second vertical auxiliary line.

  According to a third aspect of the present invention, in the image measuring device according to the first or second aspect, the drawing control means further specifies a start point of the first diagonal auxiliary line on the monitor screen, and the second vertical auxiliary In an area where the drawing of the line or the designation of the starting point of the second diagonal auxiliary line is prohibited, the figure indicating the drawing position by the operating means is designated as the starting point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line, or The display in the area that permits the designation of the start point of the second diagonal auxiliary line is changed.

  According to a fourth aspect of the present invention, in the image measuring device according to any one of the first to third aspects, the drawing control means further specifies a start point of the first oblique auxiliary line on the monitor screen, An area for prohibiting the drawing of the second vertical auxiliary line or the start point of the second diagonal auxiliary line is designated as the start point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line or the The display is displayed in a color different from the region where the start point of the second diagonal auxiliary line is permitted.

  According to a fifth aspect of the present invention, in the image measuring device according to any one of the first to fourth aspects, the first vertical auxiliary line and the first diagonal auxiliary line, the second vertical auxiliary line, A moving means capable of moving the set of the second diagonal auxiliary line in units, a set of the first vertical auxiliary line and the first diagonal auxiliary line, or the second vertical auxiliary line and the second diagonal auxiliary line When any one of the sets is moved, the human body is relatively based on the positional relationship in the direction along the reference auxiliary line of the first vertical auxiliary line and the second vertical auxiliary line after the movement. The angle between the vertical auxiliary line corresponding to the right side and the diagonal auxiliary line is re-measured as the right CE angle, and the angle formed between the vertical auxiliary line corresponding to the left side of the human body and the diagonal auxiliary line is set as the left CE angle. Re-measurement means for re-measurement.

  The invention according to claim 6 is an image server device that stores a hip joint image obtained by photographing a hip joint portion from the front side of a human body, and displays a hip joint image acquired from the image server device on a monitor screen of a display means, A medical image system connected to an image measurement device that measures a CE angle from a hip image obtained through a communication network so that data communication is possible. The image measurement device is configured to display a hip joint image displayed on the monitor screen. An operation means for designating a position for drawing an auxiliary line for CE angle measurement, and a reference auxiliary line passing through the lower left and right tear mark bottoms of the hip joint image displayed on the monitor screen based on the operation from the operation means A first vertical auxiliary line passing through the center of the right femoral head and perpendicular to the reference auxiliary line; a first oblique auxiliary line passing through the center of the right femoral head and the outer edge of the right acetabulum; A drawing control means for sequentially drawing a second vertical auxiliary line passing through the heart and perpendicular to the reference auxiliary line, and a second oblique auxiliary line passing through the center of the left femoral head and the outer edge of the left acetabulum; The angle formed between the first vertical auxiliary line and the first diagonal auxiliary line is measured as the right CE angle, and the angle formed between the drawn second vertical auxiliary line and the second diagonal auxiliary line is measured as the left CE angle. Measuring means, and the drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and in the region on the right side of the monitor screen from the first vertical auxiliary line. Only the drawing of the second vertical auxiliary line is permitted, and the start point of the second oblique auxiliary line is permitted only on the second vertical auxiliary line.

  According to the seventh aspect of the present invention, an image server device that stores a hip joint image obtained by photographing the hip joint portion from the front side of the human body, and a hip joint image acquired from the image server device is displayed on a monitor screen of a display unit. A medical image system connected to an image measurement device that measures a CE angle from a hip image obtained through a communication network so that data communication is possible. The image measurement device is configured to display a hip joint image displayed on the monitor screen. An operation means for designating a position for drawing an auxiliary line for CE angle measurement, and a reference auxiliary line passing through the lower left and right tear mark bottoms of the hip joint image displayed on the monitor screen based on the operation from the operation means A first vertical auxiliary line passing through the center of the left femoral head and perpendicular to the reference auxiliary line; a first oblique auxiliary line passing through the center of the left femoral head and the outer edge of the left acetabulum; A drawing control means for sequentially drawing a second vertical auxiliary line passing through the heart and perpendicular to the reference auxiliary line, and a second oblique auxiliary line passing through the center of the right femoral head and the outer edge of the right acetabulum; The angle formed between the first vertical auxiliary line and the first diagonal auxiliary line is measured as the left CE angle, and the angle formed between the drawn second vertical auxiliary line and the second diagonal auxiliary line is measured as the right CE angle. Measuring means, and the drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and in the region on the left side of the monitor screen from the first vertical auxiliary line. Only the drawing of the second vertical auxiliary line is permitted, and the start point of the second oblique auxiliary line is permitted only on the second vertical auxiliary line.

  According to an eighth aspect of the present invention, a computer for displaying a hip joint image obtained by photographing the hip joint portion from the front side of the human body on a monitor screen of a display means and measuring a CE angle from the displayed hip joint image is displayed on the monitor screen. An operation means for designating a position for drawing an auxiliary line for CE angle measurement in the displayed hip joint image, and lower left and right tear mark lower ends of the hip joint image displayed on the monitor screen based on an operation from the operation means A reference auxiliary line passing through the center of the right femoral head, a first vertical auxiliary line passing through the center of the right femoral head and perpendicular to the reference auxiliary line, a first oblique auxiliary line passing through the center of the right femoral head and the outer edge of the right acetabulum, and the left femoral head A drawing control means for drawing a second vertical auxiliary line passing through the center of the left femoral head and a second oblique auxiliary line passing through the center of the left femoral head and the outer edge of the left acetabulum in order, First vertical auxiliary line In order to function as measurement means for measuring an angle formed with the first diagonal auxiliary line as a right CE angle and measuring an angle formed between the drawn second vertical auxiliary line and the second diagonal auxiliary line as a left CE angle. The drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and only in the area on the right side of the monitor screen from the first vertical auxiliary line. The program permits the drawing of the second vertical auxiliary line and permits the designation of the start point of the second diagonal auxiliary line only on the second vertical auxiliary line.

  According to the ninth aspect of the invention, a hip joint image obtained by photographing the hip joint portion from the front side of the human body is displayed on the monitor screen of the display means, and a computer for measuring the CE angle from the displayed hip joint image is displayed on the monitor screen. An operation means for designating a position for drawing an auxiliary line for CE angle measurement in the displayed hip joint image, and lower left and right tear mark lower ends of the hip joint image displayed on the monitor screen based on an operation from the operation means A reference auxiliary line passing through the center of the left femoral head, a first vertical auxiliary line passing through the center of the left femoral head and perpendicular to the reference auxiliary line, a first oblique auxiliary line passing through the center of the left femoral head and the outer edge of the left acetabulum, and the right femoral head A drawing control means for sequentially drawing a second vertical auxiliary line passing through the center of the right femoral head and a second oblique auxiliary line passing through the center of the right femoral head and the outer edge of the right acetabulum. First vertical auxiliary line In order to function as measurement means for measuring an angle formed with the first diagonal auxiliary line as a left CE angle and measuring an angle formed between the drawn second vertical auxiliary line and the second diagonal auxiliary line as a right CE angle. The drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and only in the area on the left side of the monitor screen from the first vertical auxiliary line. The program permits the drawing of the second vertical auxiliary line and permits the designation of the start point of the second diagonal auxiliary line only on the second vertical auxiliary line.

  According to the first, second, sixth, seventh, eighth, and ninth aspects, the drawing of the auxiliary line is permitted only in a predetermined order, so that the operability in measuring the CE angle of the hip joint image is improved. At the same time, misdiagnosis can be prevented.

  According to the third aspect of the present invention, the graphic indicating the drawing position is in an area where the designation of the start point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line, or the designation of the start point of the second diagonal auxiliary line is prohibited. It becomes easy to recognize that.

  According to the invention described in claim 4, it is possible to distinguish between a region that permits the designation of the start point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line, or the designation of the start point of the second diagonal auxiliary line, and the prohibited region. Can be displayed.

  According to the invention described in claim 5, any one of the first vertical auxiliary line and the first diagonal auxiliary line or the second vertical auxiliary line and the second diagonal auxiliary line is moved. In this case, the CE angle is remeasured, so that misdiagnosis can be prevented.

  Hereinafter, an embodiment of a medical image system according to the present invention will be described with reference to the drawings.

  FIG. 1 shows a system configuration of the medical image system 100. As shown in FIG. 1, in a medical image system 100, an RIS (Radiological Information System) 10, a modality 20, an image server device 30, and an image measurement device 40 are connected via a network NT so that data communication is possible. ing.

  The RIS 10 performs information management such as medical appointment reservation, diagnosis result report, results management, and material inventory management in the radiology department. The RIS 10 generates examination order information indicating the contents of imaging and diagnosis, and transmits the examination order information to the modality 20.

  The modality 20 is an image generation device that captures a patient based on examination order information transmitted from the RIS 10 and generates image data of a medical image. The modality 20 transmits the image data to the image server device 30. As the modality 20, a CR (Computed Radiography) apparatus, a CT (Computed Tomography) apparatus, an MRI (Magnetic Resonance Imaging) apparatus, or the like is used.

  The image server device 30 is configured by PACS, stores the image data file of the medical image received from the modality 20, and provides the image file in response to a request from an external device such as the image measurement device 40.

  FIG. 2 shows a functional configuration of the image server device 30. As shown in FIG. 2, the image server device 30 includes a control unit 31, an operation unit 32, a display unit 33, a communication unit 34, a ROM (Read Only Memory) 35, and a storage unit 36, and each unit is a bus 37. Connected by.

  The control unit 31 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), and the like, and comprehensively controls the processing operation of each unit of the image server device 30. Specifically, the CPU reads various processing programs stored in the ROM 35 in accordance with an operation signal input from the operation unit 32 or an instruction signal received by the communication unit 34, and a work piece formed in the RAM. Expand to the area and perform various processes in cooperation with the program.

  The operation unit 32 includes a keyboard having cursor keys, numeric input keys, various function keys, and the like, and a pointing device such as a mouse. The operation unit 32 controls operation signals input by key operations or mouse operations on the keyboard. To 31.

  The display unit 33 is configured by an LCD (Liquid Crystal Display), and displays various screens based on display data input from the control unit 31.

  The communication unit 34 is an interface that transmits and receives data to and from external devices such as the RIS 10, the modality 20, and the image measurement device 40.

  The ROM 35 is configured by a nonvolatile semiconductor memory or the like, and stores a control program, parameters and files necessary for executing the program, and the like.

  The storage unit 36 is configured by a hard disk or the like and stores various data. Specifically, the storage unit 36 stores image files, related information, and the like. The image file is an image data file of a medical image received from the modality 20. For example, an image file of a hip joint image obtained by photographing the hip joint portion from the front side of the human body is stored in the storage unit 36. The related information refers to information related to the image of the image file, and is associated with each image file. The related information includes patient information, examination information, and the like. In the case of a hip joint image, the measurement result of the CE angle is also included. The right CE angle is an angle between a vertical line passing through the center of the right femoral head and a line passing through the center and the outer edge of the right acetabulum, and the left CE angle is a vertical line passing through the center of the left femoral head. The angle between the center and a line passing through the outer edge of the left acetabulum (see FIG. 12).

  When there is an image file acquisition request from the image measurement device 40, the control unit 31 reads out the requested image file from the storage unit 36 and transmits it to the image measurement device 40. Further, when the measurement result is received from the image measurement device 40, the control unit 31 stores the received measurement result in the storage unit 36 in association with the measurement target image file.

  The image measurement device 40 is a device for displaying a medical image acquired from the image server device 30 and measuring numerical values and angles used for diagnosis of the medical image, and is configured by a PC (Personal Computer) or the like. For example, the image measuring device 40 measures the CE angle used for diagnosis of osteoarthritis of the hip (acetabular dysplasia) in the hip joint image.

  FIG. 3 shows a functional configuration of the image measurement device 40. As shown in FIG. 3, the image measurement device 40 includes a control unit 41, an operation unit 42, a display unit 43, a communication unit 44, a ROM 45, and a storage unit 46, and each unit is connected by a bus 47.

  The control unit 41 includes a CPU, a RAM, and the like, and comprehensively controls processing operations of the respective units of the image measurement device 40. Specifically, the CPU reads various processing programs stored in the ROM 45 in response to an operation signal input from the operation unit 42 or an instruction signal received by the communication unit 44, and a work piece formed in the RAM. Expand to the area and perform various processes in cooperation with the program.

  The operation unit 42 includes a keyboard having cursor keys, numeric input keys, various function keys, and the like, and a pointing device such as a mouse. The control unit 42 controls operation signals input by keyboard operation or mouse operation. 41 is output. The operation unit 42 includes CE line measurement auxiliary lines (reference auxiliary line, first vertical auxiliary line, first diagonal auxiliary line, second vertical auxiliary line, second vertical line in the hip joint image displayed on the monitor screen of the display unit 43. This is used to specify the position for drawing the (slant auxiliary line).

  The display unit 43 is configured by an LCD, and displays various screens based on display data input from the control unit 41. Specifically, the display unit 43 displays a medical image such as a hip joint image.

  The communication unit 44 is an interface that transmits and receives data to and from an external device such as the image server device 30.

  The ROM 45 is constituted by a nonvolatile semiconductor memory or the like, and stores a control program, parameters and files necessary for executing the program, and the like.

  The storage unit 46 is configured by a hard disk or the like and stores various data.

  The control unit 41 transmits an acquisition request for an image file of a medical image stored in the storage unit 36 to the image server device 30 via the communication unit 44, and the image file of the medical image is transmitted from the image server device 30. To get. The control unit 41 displays the medical image on the monitor screen of the display unit 43 based on the acquired medical image image file. In the present embodiment, a case where an image file of a hip joint image is acquired and the hip joint image is displayed on the monitor screen of the display unit 43 will be described.

  Based on the operation of the operation unit 42 from the mouse, the control unit 41 passes through the center of the right femoral head and the reference auxiliary line passing through the lower left and right tear marks of the hip joint image displayed on the monitor screen of the display unit 43. A first vertical auxiliary line perpendicular to the line, a first oblique auxiliary line passing through the center of the right femoral head and the outer rim of the right acetabulum, a second vertical auxiliary line passing through the center of the left femoral head and perpendicular to the reference auxiliary line, and The second oblique auxiliary line passing through the center of the left femoral head and the outer edge of the left acetabulum is drawn in order.

  When drawing each auxiliary line, the user starts from the operation unit 42 the start point (first point) and the end point (second point) of the reference auxiliary line, the upper end of the first vertical auxiliary line (third point), and the first diagonal auxiliary. Specify the start point (4th point) and end point (5th point) of the line, the upper end (6th point) of the second vertical auxiliary line, the start point (7th point) and the end point (8th point) of the second diagonal auxiliary line To do. Since the first vertical auxiliary line and the second vertical auxiliary line are perpendicular to the reference auxiliary line, if the upper end position is designated, the first vertical auxiliary line is lowered from the upper end position to the reference auxiliary line. And a second vertical auxiliary line can be drawn.

  When drawing the first diagonal auxiliary line, the control unit 41 permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line on the monitor screen. FIG. 4 shows how to obtain coordinates on the monitor screen of the display unit 43 (monitor coordinate system). As shown in FIG. 4, in the monitor coordinate system, the right direction of the monitor screen is the positive direction of the X axis, and the downward direction of the monitor screen is the positive direction of the Y axis. Specifically, the control unit 41 acquires the expression (eX + fY + g = 0) of the straight line L that passes through the upper end (third point) of the first vertical auxiliary line and is perpendicular to the reference auxiliary line, and positions the mouse of the operation unit 42 Only when the coordinates (Xm, Ym) on the monitor screen of the display unit 43 corresponding to are on the first vertical auxiliary line of the straight line L (from the third point to the leg of the vertical line down to the reference auxiliary line) Allows specification of the start point of one diagonal extension line.

  Next, using a formula (hereinafter referred to as a discriminant) for discriminating the positional relationship of a point with respect to a certain straight line (which region the point belongs to or on the straight line) The drawing area control when drawing the second vertical auxiliary line will be described. The discriminant D is defined as follows with respect to the positional relationship of the point (α, β) with respect to the straight line represented by the equation aX + bY + c = 0.

  When drawing the second vertical auxiliary line, the control unit 41 permits the drawing of the second vertical auxiliary line only in the area on the right side of the monitor screen from the first vertical auxiliary line. Specifically, the control unit 41 is negative when the discriminant of the left end point of the reference auxiliary line on the monitor screen for the straight line L and the discriminant of the mouse coordinates (Xm, Ym) for the straight line L is negative. It is determined whether or not the mouse coordinates (Xm, Ym) exist in a region opposite to the region where the left end point of the reference auxiliary line exists with the straight line L (first vertical auxiliary line) as a boundary. To do. Then, when the discriminant of the left end point of the reference auxiliary line with respect to the straight line L and the discriminant of the mouse coordinates (Xm, Ym) with respect to the straight line L are negative, the control unit 41 is negative. Allow line drawing.

  When drawing the second diagonal auxiliary line, the control unit 41 permits the designation of the start point of the second diagonal auxiliary line only on the second vertical auxiliary line on the monitor screen. Specifically, the control unit 41 acquires the expression (hX + iY + j = 0) of the straight line M that passes through the upper end (the sixth point) of the second vertical auxiliary line and is perpendicular to the reference auxiliary line, and positions the mouse of the operation unit 42 Only when the coordinates (Xm, Ym) on the monitor screen of the display unit 43 corresponding to lie on the second vertical auxiliary line of the straight line M (from the sixth point to the leg of the vertical line down to the reference auxiliary line) Permits specification of the start point of two diagonal auxiliary lines.

  In the area where the designation of the start point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line, or the designation of the start point of the second diagonal auxiliary line on the monitor screen of the display unit 43 is prohibited, the control unit 41 controls the mouse of the operation unit 42. The graphic (mouse cursor) indicating the drawing position is changed from the display in the area where the designation of the start point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line, or the designation of the start point of the second diagonal auxiliary line is permitted. Specifically, the control unit 41 uses a normal arrow mark as a mouse cursor in an area where designation of the start point of the first diagonal auxiliary line, drawing of the second vertical auxiliary line, or designation of the start point of the second diagonal auxiliary line is permitted. In the area that prohibits the designation of the start point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line, or the designation of the start point of the second diagonal auxiliary line, a prohibition mark (for example, a x mark) is used as a mouse cursor. Display.

  The control unit 41 sets a region for prohibiting designation of the start point of the first diagonal auxiliary line, drawing of the second vertical auxiliary line, or designation of the start point of the second diagonal auxiliary line on the monitor screen of the display unit 43 to the first diagonal auxiliary line. Is displayed in a color different from the area that permits the designation of the start point of the image, the drawing of the second vertical auxiliary line, or the designation of the start point of the second oblique auxiliary line.

  The control unit 41 measures the angle formed between the drawn first vertical auxiliary line and the first oblique auxiliary line as the right CE angle, and determines the angle formed between the drawn second vertical auxiliary line and the second inclined auxiliary line. Measure as left CE angle.

  The control unit 41 sets a set of the drawn first vertical auxiliary line and the first oblique auxiliary line, and a set of the second vertical auxiliary line and the second oblique auxiliary line as a set unit based on the operation of the operation unit 42 from the mouse. Move with.

  The control unit 41 moves after the first vertical auxiliary line and the first diagonal auxiliary line, or when one of the second vertical auxiliary line and the second diagonal auxiliary line is moved. Based on the positional relationship of the first vertical auxiliary line and the second vertical auxiliary line in the direction along the reference auxiliary line in the image coordinate system, whichever of the two vertical auxiliary lines is relatively equivalent to the right side of the human body Whether it is a line or a vertical auxiliary line relatively corresponding to the left side of the human body is determined. The image coordinate system is a coordinate system on an image unique to the image file. Specifically, the control unit 41 acquires an expression (tx + uy + v = 0) of the straight line N that passes through the end point corresponding to the right side of the human body of the reference auxiliary line and is perpendicular to the reference auxiliary line, and obtains the first vertical auxiliary line and the second vertical auxiliary line. Of the vertical auxiliary lines, the vertical auxiliary line having a smaller distance from the straight line N is determined to be a vertical auxiliary line relatively corresponding to the right side of the human body.

  In the present embodiment, the monitor coordinate system on the monitor screen of the display unit 43 is distinguished as (X, Y), and the image coordinate system on the image unique to the image file is distinguished as (x, y).

  The control unit 41 re-measures the angle formed by the vertical auxiliary line and the diagonal auxiliary line corresponding to the right side of the human body as the right CE angle, and the vertical auxiliary line and the diagonal auxiliary line relatively corresponding to the left side of the human body. Measure again as the left CE angle.

Next, the operation will be described.
FIG. 5 is a flowchart showing processing executed in the image server device 30. This process is a process for providing a medical image to be measured to the image measuring device 40, and is realized by software processing in cooperation with the CPU of the control unit 31 and the program stored in the ROM 35. .

  First, when the communication unit 34 receives an image file acquisition request from the image measurement device 40 (step S <b> 1; YES), the control unit 31 reads the requested image file from the storage unit 36. It is transmitted to the image measurement device 40 via the communication unit 34 (step S2).

Next, when the measurement result is received from the image measurement device 40 by the communication unit 34 (step S3; YES), the received measurement result is associated with the image file to be measured by the control unit 31. It is stored in the storage unit 36 (step S4).
Thus, the processing in the image server device 30 ends.

  6, 7, and 8 are flowcharts showing processing executed in the image measurement device 40. This process is realized by software processing in cooperation with the CPU of the control unit 41 and the program stored in the ROM 45.

  As shown in FIG. 6, first, an image file of a hip joint image to be measured is selected by an operation from the operation unit 42, and the communication unit 44 controls the image server device 30 according to the control of the control unit 41. An acquisition request for the image file of the selected hip joint image is transmitted. And the image file of a hip joint image is acquired from the image server apparatus 30 by the control part 41 via the communication part 44 (step S11).

  Next, the control unit 41 displays the hip joint image on the monitor screen of the display unit 43 based on the acquired image file of the hip joint image (step S12).

  Next, the control unit 41 performs an assignment process in which the coordinates on the monitor screen of the display unit 43 corresponding to the mouse position of the operation unit 42 are (Xm, Ym) (step S13).

  Next, as shown in FIG. 9A, the user presses the mouse button of the operation unit 42 with the mouse cursor MC placed at the position to be the starting point of the reference auxiliary line, and the starting point position of the reference auxiliary line is determined. When designated, the control unit 41 obtains the mouse coordinates (Xm, Ym) at the position where the mouse button was pressed, and the first point coordinates (X1, Y1) are determined as X1 = Xm and Y1 = Ym. (Step S14).

  Next, as shown in FIG. 9 (b), the user presses the mouse button of the operation unit 42 with the mouse cursor MC placed at the end point of the reference auxiliary line, and the end point position of the reference auxiliary line is set. When designated, the control unit 41 obtains the mouse coordinates (Xm, Ym) at the position where the mouse button was pressed, and the second coordinates (X2, Y2) are determined as X2 = Xm and Y2 = Ym. (Step S15).

  Next, the control unit 41 converts the coordinates of the first point (X1, Y1) into the image coordinate system on the hip joint image displayed on the monitor screen of the display unit 43, and the coordinates of the second point ( A reference auxiliary line connecting the coordinates obtained by converting X2, Y2) into the image coordinate system is drawn (step S16).

  Here, the control unit 41 determines whether or not the second X coordinate X2 is larger than the first X coordinate X1 (step S17). If X2 is less than or equal to X1 (step S17; NO), the control unit 41 exchanges the first point coordinates (X1, Y1) and the second point coordinates (X2, Y2) (step S18). That is, in the subsequent processing, the coordinates of the end point with the smaller X coordinate (the left end point of the reference auxiliary line on the monitor screen, that is, the end point corresponding to the right side of the human body) of the end points of the reference auxiliary line are used. The coordinates of the first point (X1, Y1) and the end point with the larger X coordinate (the right end point of the reference auxiliary line on the monitor screen, that is, the end point corresponding to the left side of the human body) are the coordinates of the second point (X2 , Y2).

  When X2 is larger than X1 in step S17 (step S17; YES), or after step S18, as shown in FIG. 9C, the mouse cursor MC is placed at a position that becomes the upper end of the first vertical auxiliary line. In this state, when the user presses the mouse button of the operation unit 42 and designates the upper end position of the first vertical auxiliary line, the control unit 41 sets the mouse coordinates (Xm, Ym) of the position where the mouse button is pressed. Acquired and the coordinates (X3, Y3) of the third point are determined as X3 = Xm and Y3 = Ym (step S19).

  Then, as shown in FIG. 9C, the control unit 41 converts the coordinates (X3, Y3) of the third point into the image coordinate system on the hip joint image displayed on the monitor screen of the display unit 43. A first vertical auxiliary line having one end (upper end) as coordinates and perpendicular to the reference auxiliary line is drawn (step S20).

  Next, the control unit 41 obtains an expression (eX + fY + g = 0) of the straight line L that passes through the third coordinate (X3, Y3) and is perpendicular to the reference auxiliary line (step S21), and the mouse position of the operation unit 42 is obtained. It is determined whether or not the coordinates (Xm, Ym) on the monitor screen of the display unit 43 corresponding to is on the first vertical auxiliary line of the straight line L (from the third point to the leg of the vertical line drawn down to the reference auxiliary line). (Step S22). When the mouse coordinates (Xm, Ym) do not exist on the first vertical auxiliary line (step S22; NO), that is, when the mouse cursor MC is in the area A1 shown in FIG. The mouse cursor MC displayed on the monitor screen of the display unit 43 is changed to a prohibition mark (for example, a x mark) (step S23), and designation of the start point of the first diagonal auxiliary line is prohibited. Further, the control unit 41 displays the area A1 in a color different from the area (on the first vertical auxiliary line) that permits the designation of the start point of the first diagonal auxiliary line on the monitor screen. In this case, a translucent display is used when coloring the region A1 so that the hip joint image and the drawn auxiliary line can be seen.

  If the mouse coordinates (Xm, Ym) are on the first vertical auxiliary line (step S22; YES), the control unit 41 displays the mouse cursor MC as an arrow mark as usual, and the starting point of the first diagonal auxiliary line. Is allowed. As shown in FIG. 9D, the user presses the mouse button of the operation unit 42 with the mouse cursor MC placed at the position that is the starting point of the first diagonal auxiliary line, and the starting position of the first diagonal auxiliary line. Is specified, the control unit 41 obtains the mouse coordinates (Xm, Ym) at the position where the mouse button was pressed, and the fourth coordinate (X4, Y4) is determined as X4 = Xm and Y4 = Ym. (Step S24).

  Next, as shown in FIG. 10A, the user presses the mouse button of the operation unit 42 with the mouse cursor MC placed at the end point of the first diagonal auxiliary line, and the first diagonal auxiliary line. When the end point position is designated, the control unit 41 obtains the mouse coordinates (Xm, Ym) of the position where the mouse button is pressed, and the fifth coordinate (X5, Y5) is X5 = Xm, Y5 = Ym is determined (step S25).

  Next, the control unit 41 converts the coordinates of the fourth point (X4, Y4) into the image coordinate system on the hip joint image displayed on the monitor screen of the display unit 43, and the coordinate of the fifth point ( A first oblique auxiliary line connecting the coordinates obtained by converting X5, Y5) into the image coordinate system is drawn (step S26).

  Next, moving to FIG. 7, whether or not the control unit 41 multiplies the discriminant of the first point with respect to the straight line L and the discriminant of the mouse coordinates (Xm, Ym) with respect to the straight line L is negative. Then, it is determined whether or not the mouse coordinates (Xm, Ym) are in a region opposite to the region where the first point exists with the straight line L (first vertical auxiliary line) as a boundary (step S27). When the product of the discriminant of the first point for the straight line L and the discriminant of the mouse coordinates (Xm, Ym) for the straight line L is positive or 0 (step S27; NO), that is, FIG. ), The control unit 41 changes the mouse cursor MC displayed on the monitor screen of the display unit 43 to a prohibition mark (step S28), and the second vertical auxiliary line. Drawing is prohibited. Further, the control unit 41 displays the area A2 in a color different from the area where the drawing of the second vertical auxiliary line on the monitor screen is permitted. In this case, a translucent display is used when coloring the area A2 so that the hip joint image and the drawn auxiliary line can be seen.

  When the product of the discriminant of the first point for the straight line L and the discriminant of the mouse coordinates (Xm, Ym) for the straight line L is negative (step S27; YES), the control unit 41 causes the mouse cursor MC to Is displayed as an arrow mark as usual, and drawing of the second vertical auxiliary line is permitted. As shown in FIG. 10 (b), the user presses the mouse button of the operation unit 42 with the mouse cursor MC placed at the upper end position of the second vertical auxiliary line, and the upper end position of the second vertical auxiliary line. Is designated, the control unit 41 obtains the mouse coordinates (Xm, Ym) of the position where the mouse button is pressed, and the coordinates (X6, Y6) of the sixth point are determined as X6 = Xm and Y6 = Ym. (Step S29).

  Then, as shown in FIG. 10B, the coordinate of the sixth point (X6, Y6) is converted into the image coordinate system on the hip joint image displayed on the monitor screen of the display unit 43 by the control unit 41. A second vertical auxiliary line perpendicular to the reference auxiliary line with one end (upper end) of the coordinates is drawn (step S30).

  Next, the control unit 41 obtains the expression (hX + iY + j = 0) of the straight line M that passes through the coordinates (X6, Y6) of the sixth point and is perpendicular to the reference auxiliary line (step S31), and the position of the mouse of the operation unit 42 It is determined whether or not the coordinates (Xm, Ym) on the monitor screen of the display unit 43 corresponding to are on the second vertical auxiliary line of the straight line M (from the sixth point to the leg of the vertical line drawn down to the reference auxiliary line). (Step S32). When the mouse coordinates (Xm, Ym) do not exist on the second vertical auxiliary line (step S32; NO), that is, when the mouse cursor MC is in the area A3 shown in FIG. The mouse cursor MC displayed on the monitor screen of the display unit 43 is changed to a prohibition mark (step S33), and designation of the start point of the second diagonal auxiliary line is prohibited. Further, the control unit 41 displays the area A3 in a color different from the area (on the second vertical auxiliary line) that permits the designation of the start point of the second diagonal auxiliary line on the monitor screen. In this case, a translucent display is used when coloring the area A3 so that the hip joint image and the drawn auxiliary line can be seen.

  When the mouse coordinates (Xm, Ym) are present on the second vertical auxiliary line (step S32; YES), the control unit 41 displays the mouse cursor MC as an arrow mark as usual, and the starting point of the second diagonal auxiliary line. Is allowed. As shown in FIG. 10C, the user presses the mouse button of the operation unit 42 with the mouse cursor MC placed at the position that is the starting point of the second diagonal auxiliary line, and the starting position of the second diagonal auxiliary line. Is specified, the control unit 41 obtains the mouse coordinates (Xm, Ym) of the position where the mouse button was pressed, and the seventh coordinate (X7, Y7) is determined as X7 = Xm and Y7 = Ym. (Step S34).

  Next, as shown in FIG. 10D, the user presses the mouse button of the operation unit 42 with the mouse cursor MC placed at the end point of the second diagonal auxiliary line, and the second diagonal auxiliary line. When the end point position is designated, the control unit 41 obtains the mouse coordinates (Xm, Ym) of the position where the mouse button is pressed, and the eighth point coordinates (X8, Y8) are X8 = Xm, Y8 = Ym is determined (step S35).

  Next, the control unit 41 converts the coordinate of the seventh point (X7, Y7) into the image coordinate system on the hip joint image displayed on the monitor screen of the display unit 43, and the coordinate of the eighth point ( A second diagonal auxiliary line connecting the coordinates obtained by converting X8, Y8) into the image coordinate system is drawn (step S36).

  Next, the control unit 41 measures the angle formed between the first vertical auxiliary line and the first diagonal auxiliary line as the right CE angle (step S37), and the angle formed between the second vertical auxiliary line and the second diagonal auxiliary line. Is measured as the left CE angle (step S38).

  Next, the measurement result is displayed on the monitor screen of the display unit 43 by the control unit 41 (step S39). In the example of FIG. 10D, the values of the right CE angle and the left CE angle are displayed as “right CE angle 50.2 ° left CE angle 47.3 °” together with the auxiliary lines used for measuring the CE angle.

  Next, moving to FIG. 8, the first vertical auxiliary line and the first diagonal auxiliary line on the hip joint image displayed on the monitor screen of the display unit 43 based on the operation from the operation unit 42 by the control unit 41. It is determined whether or not any one of the pair or the pair of the second vertical auxiliary line and the second oblique auxiliary line has been moved (step S40). Specifically, the user presses the mouse button of the operation unit 42 with the mouse cursor placed on the vertical auxiliary line to be moved (selection of the vertical auxiliary line), and the mouse button is moved to the destination position while holding down the mouse button. When separated (position determination of the vertical auxiliary line after movement), the pair of the vertical auxiliary line and the diagonal auxiliary line is moved.

  When any one of the set of the first vertical auxiliary line and the first diagonal auxiliary line or the set of the second vertical auxiliary line and the second diagonal auxiliary line is moved by the operation from the operation unit 42 (Step S40; YES), the control unit 41 converts the first monitor coordinates (X1, Y1) into the image coordinate system as shown in FIG. 11 (corresponding to the right side of the human body of the reference auxiliary line). An equation (tx + uy + v = 0) of the straight line N passing through the end point and perpendicular to the reference auxiliary line is acquired (step S41). The formula of the straight line N is expressed in the image coordinate system.

  Next, the control unit 41 acquires the coordinates on the reference auxiliary line of the first vertical auxiliary line in the image coordinate system (the coordinates of the foot of the perpendicular line drawn from the third point to the reference auxiliary line) (x9, y9) (step 9). S42) The coordinates on the reference auxiliary line of the second vertical auxiliary line in the image coordinate system (the coordinates of the foot of the perpendicular line drawn from the sixth point to the reference auxiliary line) (x10, y10) are acquired (step S43). The coordinates (x9, y9) and coordinates (x10, y10) indicate the position of the point P or the point Q shown in FIG. 11 in the image coordinate system.

  Next, the control unit 41 makes the vertical auxiliary line having a smaller distance from the straight line N out of the coordinates (x9, y9) and the coordinates (x10, y10) relatively correspond to the right side of the human body. (Step S44).

  Next, the control unit 41 re-measures the angle formed by the vertical auxiliary line and the diagonal auxiliary line corresponding to the right side of the human body as the right CE angle (step S45), and relatively corresponds to the left side of the human body. The angle formed by the vertical auxiliary line and the diagonal auxiliary line is remeasured as the left CE angle (step S46).

  Next, a measurement result is displayed on the monitor screen of the display part 43 by the control part 41 (step S47), and it returns to step S40.

  In step S40, the set of the first vertical auxiliary line and the first diagonal auxiliary line on the hip joint image displayed on the monitor screen of the display unit 43, or the set of the second vertical auxiliary line and the second diagonal auxiliary line is moved. If there is no (step S40; NO), the control unit 41 determines whether or not to save the measurement result (step S48). For example, when a save button is selected on the monitor screen of the display unit 43 by an operation from the operation unit 42, the measurement result is saved.

When saving the measurement result (step S48; YES), the control unit 41 sets the measurement result (right CE angle and left) together with the coordinate values (image coordinate system) indicating the start point and end point of each drawn auxiliary line. (CE angle value) is transmitted to the image server device 30 (step S49). If the measurement result is not stored (step S48; NO), the process ends.
Thus, the process in the image measurement device 40 ends.

  As described above, according to the image measuring device 40, the designation of the start point of the first diagonal auxiliary line is permitted only on the first vertical auxiliary line, and the second is only performed in the area on the right side of the monitor screen from the first vertical auxiliary line. Since the drawing of the vertical auxiliary line is permitted and the designation of the start point of the second diagonal auxiliary line is permitted only on the second vertical auxiliary line, the drawing of the auxiliary line can be permitted only in a predetermined order. Therefore, the operability in measuring the CE angle of the hip joint image can be improved and misdiagnosis can be prevented.

  In addition, the mouse cursor is moved to the first diagonal auxiliary line in an area where the specification of the start point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line, or the specification of the start point of the second diagonal auxiliary line on the monitor screen of the display unit 43 is prohibited. Since the display changes in the area where the start point designation, drawing of the second vertical auxiliary line, or display of the second oblique auxiliary line start point is allowed, the mouse cursor designates the first diagonal auxiliary line start point, the second vertical auxiliary line. It becomes easy to recognize that the area is in the area where the drawing of the auxiliary line or the designation of the start point of the second oblique auxiliary line is prohibited.

  In addition, an area that prohibits the designation of the start point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line, or the designation of the start point of the second diagonal auxiliary line on the monitor screen of the display unit 43 is set to the start point of the first diagonal auxiliary line. Because it is displayed in a color different from the area that allows specification, drawing of the second vertical auxiliary line, or specification of the start point of the second diagonal auxiliary line, designation of the start point of the first diagonal auxiliary line, drawing of the second vertical auxiliary line, or The area where the designation of the start point of the second diagonal auxiliary line is permitted and the area which is prohibited can be displayed in a distinguishable manner.

  In addition, when any one of the pair of the first vertical auxiliary line and the first oblique auxiliary line or the pair of the second vertical auxiliary line and the second oblique auxiliary line is moved, the first after the movement Based on the positional relationship between the vertical auxiliary line and the second vertical auxiliary line in the direction along the reference auxiliary line, the angle formed by the vertical auxiliary line and the diagonal auxiliary line corresponding to the right side of the human body is remeasured as the right CE angle. Since the angle formed by the vertical auxiliary line and the diagonal auxiliary line corresponding to the left side of the human body is remeasured as the left CE angle, misdiagnosis can be prevented.

  The description in the above embodiment is an example of the medical image system according to the present invention, and the present invention is not limited to this. The detailed configuration and detailed operation of each device constituting the system can be appropriately changed.

  For example, in the above embodiment, the reference auxiliary line that passes through the lower left and right tear marks, the vertical auxiliary line that passes through the center of the right femoral head and is perpendicular to the reference auxiliary line, the center of the right femoral head, and the outer edge of the right acetabulum We explained the case of drawing the auxiliary lines in the order of the diagonal auxiliary line, the vertical auxiliary line passing through the center of the left femoral head and perpendicular to the reference auxiliary line, and the diagonal auxiliary line passing through the center of the left femoral head and the outer edge of the left acetabulum. , A reference auxiliary line passing through the lower left and right tear marks, a vertical auxiliary line passing through the center of the left femoral head and perpendicular to the reference auxiliary line, an oblique auxiliary line passing through the center of the left femoral head and the outer edge of the left acetabulum, right femoral head The auxiliary lines may be drawn in the order of a vertical auxiliary line that passes through the center of the right vertical line and a diagonal auxiliary line that passes through the center of the right femoral head and the outer edge of the right acetabulum. In this case, the control unit 41 designates the start point of the oblique auxiliary line that passes through the center of the left femoral head and the outer edge of the left acetabulum only on the vertical auxiliary line that passes through the center of the left femoral head and is perpendicular to the reference auxiliary line. Permits the drawing of the vertical auxiliary line that passes through the center of the right femoral head and passes the center of the right femoral head only in the left area of the monitor screen from the vertical auxiliary line that passes through the center of the left femoral head and is perpendicular to the reference auxiliary line, The designation of the start point of the oblique auxiliary line that passes through the center of the right femoral head and the outer edge of the right acetabulum is allowed only on the vertical auxiliary line that passes through the center of the right femoral head and is perpendicular to the reference auxiliary line.

  Further, in the above embodiment, in the region where the designation of the start point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line, or the designation of the start point of the second diagonal auxiliary line on the monitor screen of the display unit 43 is prohibited, the operation unit Change the display of the figure (mouse cursor) showing the drawing position with the mouse of 42 with the designation of the start point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line, or the designation of the start point of the second diagonal auxiliary line In addition, the start of the first diagonal auxiliary line on the monitor screen is designated, the second vertical auxiliary line drawing or the designation of the start point of the second diagonal auxiliary line is prohibited. The display area is displayed in a different color from the area that allows the drawing of two vertical auxiliary lines or the start point of the second diagonal auxiliary line, but the mouse is not displayed in different colors depending on whether or not drawing is allowed. You may only change the cursor. Further, only the color-coded display may be performed without changing the mouse cursor.

  In the above embodiment, the CE angle is always re-measured when the set of the vertical auxiliary line and the diagonal auxiliary line is moved. However, the two vertical auxiliary lines in the direction along the reference auxiliary line are mutually measured. The CE angle may be measured again only when the positional relationship is changed (when one vertical auxiliary line exceeds another vertical auxiliary line).

  In the above description, an example in which a ROM is used as a computer-readable medium storing a program for executing each process is disclosed, but the present invention is not limited to this example. As other computer-readable media, a non-volatile memory such as a flash memory and a portable recording medium such as a CD-ROM can be applied. A carrier wave may be applied as a medium for providing program data via a communication line.

1 is a system configuration diagram of a medical image system according to an embodiment of the present invention. It is a block diagram which shows the functional structure of an image server apparatus. It is a block diagram which shows the functional structure of an image measuring device. It is a figure which shows how to take the coordinate in a monitor screen. It is a flowchart which shows the process performed in an image server apparatus. It is a flowchart which shows the process performed in an image measuring device. It is a flowchart which shows the process performed in an image measuring device. It is a flowchart which shows the process performed in an image measuring device. (A) is an example of a screen when designating the starting point of the reference auxiliary line. (B) is an example of a screen for designating the end point of the reference auxiliary line. (C) is a screen example when the upper end of the first vertical auxiliary line is designated. (D) is an example of a screen when designating the starting point of the first diagonal auxiliary line. (A) is an example of a screen when the end point of the first diagonal auxiliary line is designated. (B) is an example of a screen when the upper end of the second vertical auxiliary line is designated. (C) is an example of a screen when designating the start point of the second diagonal auxiliary line. (D) is an example of a screen when the end point of the second diagonal auxiliary line is designated. A diagram for explaining a straight line that passes through an end point corresponding to the right side of the human body of the reference auxiliary line and is perpendicular to the reference auxiliary line, a coordinate on the reference auxiliary line of the first vertical auxiliary line, and a coordinate on the reference auxiliary line of the second vertical auxiliary line It is. It is a figure for demonstrating CE angle | corner. It is a figure for demonstrating the problem in the past.

Explanation of symbols

10 RIS
20 modality 30 image server device 31 control unit 32 operation unit 33 display unit 34 communication unit 35 ROM
36 Storage Unit 37 Bus 40 Image Measuring Device 41 Control Unit 42 Operation Unit 43 Display Unit 44 Communication Unit 45 ROM
46 storage unit 47 bus 100 medical image system NT network MC mouse cursor

Claims (9)

An image measuring device that displays a hip joint image obtained by photographing a hip joint portion from the front side of a human body on a monitor screen of a display unit and measures a CE angle from the displayed hip joint image,
Operation means for designating a position for drawing an auxiliary line for CE angle measurement in the hip joint image displayed on the monitor screen;
Based on an operation from the operation means, a reference auxiliary line passing through the lower left and right tear marks of the hip joint image displayed on the monitor screen, a first vertical auxiliary line passing through the center of the right femoral head and perpendicular to the reference auxiliary line A first diagonal auxiliary line passing through the center of the right femoral head and the outer edge of the right acetabulum, a second vertical auxiliary line passing through the center of the left femoral head and perpendicular to the reference auxiliary line, and the center of the left femoral head A drawing control means for sequentially drawing a second oblique auxiliary line passing through the outer edge of the left acetabulum;
The angle formed between the drawn first vertical auxiliary line and the first diagonal auxiliary line is measured as the right CE angle, and the angle formed between the drawn second vertical auxiliary line and the second diagonal auxiliary line is set as the left CE angle. Measuring means to measure as,
With
The drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and the second vertical auxiliary line only in the area on the right side of the monitor screen from the first vertical auxiliary line. An image measuring device that permits drawing and permits designation of the start point of the second oblique auxiliary line only on the second vertical auxiliary line. An image measuring device that displays a hip joint image obtained by photographing a hip joint portion from the front side of a human body on a monitor screen of a display unit and measures a CE angle from the displayed hip joint image,
Operation means for designating a position for drawing an auxiliary line for CE angle measurement in the hip joint image displayed on the monitor screen;
Based on the operation from the operation means, a reference auxiliary line that passes through the lower end of the left and right tear marks of the hip joint image displayed on the monitor screen, a first vertical auxiliary line that passes through the center of the left femoral head and is perpendicular to the reference auxiliary line A first oblique auxiliary line passing through the center of the left femoral head and the outer edge of the left acetabulum, a second vertical auxiliary line passing through the center of the right femoral head and perpendicular to the reference auxiliary line, and the center of the right femoral head A drawing control means for sequentially drawing a second oblique auxiliary line passing through the outer edge of the right acetabulum;
The angle formed between the drawn first vertical auxiliary line and the first diagonal auxiliary line is measured as the left CE angle, and the angle formed between the drawn second vertical auxiliary line and the second diagonal auxiliary line is the right CE angle. Measuring means to measure as,
With
The drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and the second vertical auxiliary line only in the area on the left side of the monitor screen from the first vertical auxiliary line. An image measuring device that permits drawing and permits designation of the start point of the second oblique auxiliary line only on the second vertical auxiliary line. The drawing control means is further configured to perform the operation in an area where the designation of the start point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line, or the designation of the start point of the second diagonal auxiliary line on the monitor screen is prohibited. The graphic indicating the drawing position by means is changed from the display in the area where the designation of the starting point of the first diagonal auxiliary line, the drawing of the second vertical auxiliary line or the designation of the starting point of the second diagonal auxiliary line is permitted,
The image measuring device according to claim 1. The drawing control means further includes an area for prohibiting designation of a start point of the first diagonal auxiliary line, drawing of the second vertical auxiliary line or designation of a start point of the second diagonal auxiliary line on the monitor screen. Display in a color different from the area where the designation of the start point of the first diagonal auxiliary line on the screen, the drawing of the second vertical auxiliary line, or the designation of the start point of the second diagonal auxiliary line is allowed,
The image measuring device according to claim 1. A moving means capable of moving the set of the first vertical auxiliary line and the first diagonal auxiliary line, the set of the second vertical auxiliary line and the second diagonal auxiliary line in units of sets;
When any one of the set of the first vertical auxiliary line and the first diagonal auxiliary line or the set of the second vertical auxiliary line and the second diagonal auxiliary line is moved, after the movement Based on the positional relationship of the first vertical auxiliary line and the second vertical auxiliary line in the direction along the reference auxiliary line, the angle formed by the vertical auxiliary line and the diagonal auxiliary line corresponding to the right side of the human body is set to the right CE. Re-measurement means that re-measures the angle, and re-measures the angle between the vertical auxiliary line and the diagonal auxiliary line corresponding to the left side of the human body as the left CE angle;
Further comprising
The image measurement apparatus according to claim 1. An image server device that stores a hip joint image obtained by photographing the hip joint portion from the front side of the human body, and a hip joint image acquired from the image server device is displayed on a monitor screen of a display means, and a CE angle is measured from the displayed hip joint image A medical image system connected to the image measurement device via a communication network so that data communication is possible,
The image measuring device is
Operation means for designating a position for drawing an auxiliary line for CE angle measurement in the hip joint image displayed on the monitor screen;
Based on an operation from the operation means, a reference auxiliary line passing through the lower left and right tear marks of the hip joint image displayed on the monitor screen, a first vertical auxiliary line passing through the center of the right femoral head and perpendicular to the reference auxiliary line A first diagonal auxiliary line passing through the center of the right femoral head and the outer edge of the right acetabulum, a second vertical auxiliary line passing through the center of the left femoral head and perpendicular to the reference auxiliary line, and the center of the left femoral head A drawing control means for sequentially drawing a second oblique auxiliary line passing through the outer edge of the left acetabulum;
The angle formed between the drawn first vertical auxiliary line and the first diagonal auxiliary line is measured as the right CE angle, and the angle formed between the drawn second vertical auxiliary line and the second diagonal auxiliary line is set as the left CE angle. Measuring means to measure as,
With
The drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and the second vertical auxiliary line only in the area on the right side of the monitor screen from the first vertical auxiliary line. A medical image system that permits the drawing of the second oblique auxiliary line only on the second vertical auxiliary line. An image server device that stores a hip joint image obtained by photographing the hip joint portion from the front side of the human body, and a hip joint image acquired from the image server device is displayed on a monitor screen of a display means, and a CE angle is measured from the displayed hip joint image A medical image system connected to the image measurement device via a communication network so that data communication is possible,
The image measuring device is
Operation means for designating a position for drawing an auxiliary line for CE angle measurement in the hip joint image displayed on the monitor screen;
Based on the operation from the operation means, a reference auxiliary line that passes through the lower end of the left and right tear marks of the hip joint image displayed on the monitor screen, a first vertical auxiliary line that passes through the center of the left femoral head and is perpendicular to the reference auxiliary line A first oblique auxiliary line passing through the center of the left femoral head and the outer edge of the left acetabulum, a second vertical auxiliary line passing through the center of the right femoral head and perpendicular to the reference auxiliary line, and the center of the right femoral head A drawing control means for sequentially drawing a second oblique auxiliary line passing through the outer edge of the right acetabulum;
The angle formed between the drawn first vertical auxiliary line and the first diagonal auxiliary line is measured as the left CE angle, and the angle formed between the drawn second vertical auxiliary line and the second diagonal auxiliary line is the right CE angle. Measuring means to measure as,
With
The drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and the second vertical auxiliary line only in the area on the left side of the monitor screen from the first vertical auxiliary line. A medical image system that permits the drawing of the second oblique auxiliary line only on the second vertical auxiliary line. A computer for displaying a hip joint image obtained by photographing the hip joint portion from the front side of a human body on a monitor screen of a display means and measuring a CE angle from the displayed hip joint image,
An operation means for designating a position for drawing an auxiliary line for CE angle measurement in the hip joint image displayed on the monitor screen;
Based on an operation from the operation means, a reference auxiliary line passing through the lower left and right tear marks of the hip joint image displayed on the monitor screen, a first vertical auxiliary line passing through the center of the right femoral head and perpendicular to the reference auxiliary line A first diagonal auxiliary line passing through the center of the right femoral head and the outer edge of the right acetabulum, a second vertical auxiliary line passing through the center of the left femoral head and perpendicular to the reference auxiliary line, and the center of the left femoral head A drawing control means for sequentially drawing a second oblique auxiliary line passing through the outer edge of the left acetabulum,
The angle formed between the drawn first vertical auxiliary line and the first diagonal auxiliary line is measured as the right CE angle, and the angle formed between the drawn second vertical auxiliary line and the second diagonal auxiliary line is set as the left CE angle. Measuring means to measure as,
Is a program for functioning as
The drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and the second vertical auxiliary line only in the area on the right side of the monitor screen from the first vertical auxiliary line. A program that permits drawing and permits designation of the start point of the second diagonal auxiliary line only on the second vertical auxiliary line. A computer for displaying a hip joint image obtained by photographing the hip joint portion from the front side of a human body on a monitor screen of a display means and measuring a CE angle from the displayed hip joint image,
An operation means for designating a position for drawing an auxiliary line for CE angle measurement in the hip joint image displayed on the monitor screen;
Based on the operation from the operation means, a reference auxiliary line that passes through the lower end of the left and right tear marks of the hip joint image displayed on the monitor screen, a first vertical auxiliary line that passes through the center of the left femoral head and is perpendicular to the reference auxiliary line A first oblique auxiliary line passing through the center of the left femoral head and the outer edge of the left acetabulum, a second vertical auxiliary line passing through the center of the right femoral head and perpendicular to the reference auxiliary line, and the center of the right femoral head A drawing control means for sequentially drawing a second oblique auxiliary line passing through the outer edge of the right acetabulum,
The angle formed between the drawn first vertical auxiliary line and the first diagonal auxiliary line is measured as the left CE angle, and the angle formed between the drawn second vertical auxiliary line and the second diagonal auxiliary line is the right CE angle. Measuring means to measure as,
Is a program for functioning as
The drawing control means permits the designation of the start point of the first diagonal auxiliary line only on the first vertical auxiliary line, and the second vertical auxiliary line only in the area on the left side of the monitor screen from the first vertical auxiliary line. A program that permits drawing and permits designation of the start point of the second diagonal auxiliary line only on the second vertical auxiliary line.

Images