JP5311328B2 - Medical imaging system - Google Patents

Description

  The present invention relates to a medical imaging system including an imaging unit that images a subject and a placement unit that places the subject.

  As a medical imaging apparatus including a gantry having an imaging unit for imaging a subject and a table having a cradle as a placement unit for placing the subject, for example, an X-ray CT (Computed Tomography) apparatus, PET (Postron Emission) A Tomography (SP) (Single Photo Emission Computed Tomography) device, an MRI (Magnetic Resonance Imaging) device, and the like are known (for example, see Patent Document 1).

  In such a medical image photographing apparatus, photographing conditions such as a photographing range and a gantry tilt angle are set before photographing. For example, an example of setting a conventional imaging range in an X-ray CT apparatus will be described. First, an object is placed on the cradle, and the cradle includes, for example, an X-ray tube and an X-ray detection unit as the imaging unit. Move to the position of the projector on the gantry. From the projector, the subject is irradiated with laser light extending in a direction orthogonal to the body axis, and the position of the cradle is adjusted so that the laser light is positioned at the center of the imaging range (center in the body axis direction). Then, after this adjustment is completed, the operator designates and sets an imaging range of a predetermined range with a numerical value centering on the laser beam irradiated to the subject.

The gantry tilt angle is set by an operator inputting a numerical value on the operation console so that scanning can be performed at a desired slice angle.
JP 2004-19495 A

  However, since the operator designates the shooting range and the tilt angle by numerical values as described above, it can be set so as to satisfy desired conditions, particularly when the operator has little experience. Have difficulty.

  Further, in order to set the imaging range, it is necessary to move the cradle until the laser beam is irradiated to a predetermined position of the subject, which is troublesome. Furthermore, the operation of aligning the laser beam at a desired position requires some experience. Further, in order to avoid that the set range is less than the range that is actually desired to be imaged, it is only necessary to set the imaging range to be slightly wider. However, in an X-ray CT apparatus or the like, useless exposure will occur.

  The problem to be solved by the present invention is to provide a medical image photographing system in which photographing conditions can be set more easily than before.

  The present invention has been made to solve the above-mentioned problems. The invention according to the first aspect is directed to an instruction means for an operator to indicate a shooting condition by holding it in his hand, and to indicate the shooting condition. A medical image photographing system comprising: setting means for setting photographing conditions based on the position or displacement of the instruction means at the time.

  The invention according to a second aspect includes an imaging unit that images a subject and a mounting unit that mounts the subject, wherein at least one of the imaging unit and the mounting unit is moved to move the mounting unit A medical image photographing system for positioning an upper subject in the photographing unit, wherein the operator holds the subject in his / her hand and designates a photographing range of the subject placed on the placement unit. A medical image photographing system comprising: instruction means; and setting means for setting an imaging range based on a position or displacement of the instruction means when an imaging range is designated.

  According to a third aspect of the present invention, in the second aspect of the invention, a determination unit that determines whether or not a shooting range set by the setting unit is within a shooting possible range; A medical image photographing system comprising: an informing means for notifying that the camera is out of the image capturing range when it is determined that the image is out of the image capturing range.

  The invention according to a fourth aspect is the invention according to the second or third aspect, wherein the distance determining position where the distance from the imaging unit in the moving direction of the imaging unit or the imaging unit or the mounting unit is known, and One of the instruction means is provided with a light and ultrasonic wave transmission means, and the other is provided with a reception means. The instruction means indicates a reference position for determining a photographing start position and a photographing end position, or a photographing range. The setting means calculates a distance between the position indicated by the instruction means and the photographing unit based on a reception time difference in the reception means of light and ultrasonic waves simultaneously transmitted from the transmission means. Then, the medical image photographing system is characterized in that the photographing range is set by detecting the position of the instruction means.

  According to a fifth aspect of the present invention, in the second or third aspect of the invention, the instructing unit includes an acceleration sensor, and the setting unit is configured to move the imaging unit or the imaging unit or the placement unit described above. Detecting the displacement of the instruction means based on the detected value of the acceleration sensor when the instruction means moves between the distance determination position where the distance from the imaging unit is known and the imaging start position, In addition, based on a detection value of the acceleration sensor when the instruction unit moves between the photographing unit or the distance determination position and the photographing end position, a displacement of the instruction unit is detected to set a photographing range, Alternatively, the setting unit detects the displacement of the instruction unit based on a detection value of the acceleration sensor when the instruction unit moves between the imaging unit or the distance determination position and the reference position. It is a medical imaging system and sets the circumference.

  A sixth aspect of the invention includes a gantry having an imaging unit for imaging a subject and capable of tilting to a desired tilt angle, and a placement unit for placing the subject, the gantry and the placement unit described above A medical image photographing system for moving the at least one of the above-mentioned subject to position the subject on the placement unit in the photographing unit, and an instruction for the operator to hold the hand and move it to designate a desired tilt angle And a setting unit that sets a tilt angle of the gantry based on a moving direction of the instruction unit.

  A seventh aspect of the invention is the medical image photographing system according to any one of the first to sixth aspects, wherein the instruction means includes a display unit for displaying a photographing range.

  The invention according to an eighth aspect is the medical image photographing system according to any one of the first to seventh aspects, wherein the instruction unit includes a reading unit for reading information related to a subject.

  The invention according to a ninth aspect is the invention according to any one of the first to eighth aspects, wherein a connection body of the instruction means, and an activation means that starts the system when the instruction means is connected to the connection body. And a medical image photographing system comprising:

  According to the present invention, since the operator holds the instruction means in his / her hand and actually instructs the photographing condition to set the photographing condition, the photographing condition can be set more easily than in the prior art.

  In addition, according to the present invention, it is possible to set the photographing range by actually instructing and setting the photographing range by the instruction means without using a projector as in the prior art.

  According to the present invention, when it is determined that the shooting range set by the setting unit is outside the shooting range, the notification unit notifies that the shooting range is out of the shooting range. Can easily know that is out of the shooting range.

  Furthermore, according to the present invention, the tilt angle can be set more easily than in the prior art because the desired tilt angle can be actually instructed by moving the indicating means to set the tilt angle.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a first embodiment of an X-ray CT system which is an embodiment of a medical imaging system according to the present invention, and FIG. 2 is an overview diagram of the X-ray CT system shown in FIG. 3 is a diagram for explaining the calculation of the distance between the scan start position and the scan end position and the scan plane in the X-ray CT system shown in FIG.

  The X-ray CT system 1 includes a gantry 100, a table 200, an operation console 300, and a remote controller 400.

  The gantry 100 includes a donut-shaped rotating part 102 having a hollow part 101. In the rotating unit 102, an X-ray tube 103 that generates X-rays and a collimator 104 that defines an irradiation range of the X-rays from the X-ray tube 103 are provided. In the rotating unit 102, an X-ray detection unit 105 that detects X-rays irradiated from the X-ray tube 103 and transmitted through the subject, and projection data obtained by the X-ray detection unit 105 are collected. And a data collection unit 106 that performs the above-described processing. The X-ray tube 103 and the collimator 104, the X-ray detection unit 105, and the data collection unit 106 are provided at positions facing each other with the cavity 101 interposed therebetween, and the relationship is maintained in a state where the relationship is maintained. The rotating unit 102 is configured to rotate. Incidentally, the X-ray tube 103 and the X-ray detection unit 105 are an example of an embodiment of an imaging unit in the present invention. Further, in FIG. 3, a symbol S indicates a scan plane by the X-ray tube 103 and the X-ray detection unit 105.

  The gantry 100 includes an X-ray tube controller 107 that controls the X-ray tube 103 and a rotating unit controller 108 that controls the rotation of the rotating unit 102. A control signal is output from the main controller 109 to the X-ray tube controller 107 and the rotating unit controller 108. The main controller 109 outputs a control signal to each part of the gantry 100 in addition to the X-ray tube controller 107 and the rotating unit controller 108 so that imaging (scanning) is performed under predetermined imaging conditions. ing.

  The main controller 109 controls the table 200 in addition to the various controls described above. Specifically, the main controller 109 moves the cradle 202 of the table 200 in the horizontal direction and moves the support table 201 in the vertical direction by moving the support table 201 in the vertical direction. And a vertical movement control unit 1092 for moving in the vertical direction.

  The horizontal movement control unit 1091 outputs a control signal for moving the cradle 202 in the horizontal direction to the table 200 by an input from the operation console 300 or an operation button (not shown) provided in the gantry 100. In addition, when there is an input from an operation button (not shown) provided on the operation console 300 or the gantry 100, the vertical movement control unit 1092 sends a control signal for raising and lowering an elevator unit 203 (described later) of the table 200 to the table. Output to 200.

Further, as will be described later, the main controller 109 detects the position of the remote controller 400 when a scan range is instructed as a shooting condition, and sets setting means 1093 for setting the scan range (shooting range) according to this position. It has. In this example, the setting unit 1093 detects the position of the remote controller 400 with respect to the imaging unit (the X-ray tube 103 and the X-ray detection unit 105) as a reference position. That is, the setting unit 1093 sets the scan range by calculating the distance in the cradle movement direction between the position instructed by the remote controller 400 and the X-ray tube 103 and the X-ray detection unit 105. Here, in this example, it is assumed that the position from position A to position B on the cradle 202 of the table 200 is set as the scan range. When setting the scan range, the position A and the position B are instructed by the remote controller 400. The setting means 1093 is a distance D _AS between the position A and the scan plane S as a distance in the cradle movement direction between the position instructed by the remote controller 400 and the X-ray tube 103 and the X-ray detection unit 105. distance D _BS between the position B and the scan surface S is adapted to be calculated. Details will be described later.

  The gantry 100 further includes a receiving unit 110 having an infrared receiving unit 110a that receives infrared rays transmitted from the remote controller 400 and an ultrasonic receiving unit 110b that receives ultrasonic waves transmitted from the remote control 400. The infrared receiving unit 110a is a light receiving unit in the present invention, and the ultrasonic receiving unit 110b is an ultrasonic receiving unit in the present invention. The infrared receiving unit 110 a and the ultrasonic receiving unit 110 b are configured to output a reception signal to the main controller 109 when receiving infrared rays and ultrasonic waves.

The receiving unit 110 is provided on the surface G of the gantry 100 on the table 200 side. Here, the distance D _GS in the cradle movement direction between the surface G of the gantry 100 and the scan surface S is a value determined according to the apparatus, and the surface G is an example of the embodiment of the distance determining position in the present invention. It is.

  As shown in FIG. 2, a box-shaped holder 111 into which the remote controller 400 can be placed is provided on the side surface of the gantry 100.

  The table 200 includes a support table 201 and a cradle 202 that is provided on the support table 201 so as to be movable in the horizontal direction and conveys a subject to the cavity 101 of the gantry 100. The support table 201 is moved in the vertical direction by the elevating part 203, so that the cradle 202 can be moved in the vertical direction. The operation of the lifting unit 203 is controlled by a control signal from the vertical movement control unit 1092.

  Further, the cradle 202 is moved in the horizontal direction by a motor (not shown) and is drawn out from the support base 201. The movement of the cradle 202 in the horizontal direction is controlled by a control signal from the horizontal movement control unit 1091.

  Incidentally, the cradle 202 is an example of an embodiment of a placement unit for placing a subject in the present invention. In this example, the cradle 202 is moved to position the subject on the imaging unit (the X-ray tube 103 and the X-ray detection unit 105).

  Here, the position A in the cradle 202 is a scan start position. Therefore, when the cradle 202 is unwound from the support table 201 and moved in the horizontal direction, the scan is started when the position A moves to the scan plane S. The position B in the cradle 202 is a scan end position. Therefore, when the cradle 202 is moved in the horizontal direction and the position B moves to the scan plane S, the scan is completed.

  The table 200 has position detecting means (not shown) for detecting the position of the cradle 202 fed out from the support base 201. The position information detected by the position detecting means is input to the main controller 109. The horizontal control unit 1091 controls the cradle 202 based on the position information.

  The operation console 300 includes a central processing unit 301 that controls the entire apparatus, an input device 302 such as a keyboard that receives input from an operator, and a display that displays a tomographic image reconstructed by the central processing unit 301. An apparatus 303 includes a storage device 304 that stores programs, data, data, X-ray tomographic images, and the like.

  The remote controller 400 can be moved by the operator O in his / her hand, and the operator O instructs the photographing range by the remote controller 400. In this example, a position A as a shooting start position and a position B as a shooting end position are designated by the remote controller 400 as a shooting range.

  The remote control 400 includes an infrared transmitter 401 and an ultrasonic transmitter 402. The remote controller 400 includes a transmission button (not shown) for transmitting infrared and ultrasonic waves simultaneously from the infrared transmission unit 401 and the ultrasonic transmission unit 402, respectively.

  The infrared transmitter 401 is a light transmitter in the present invention, and the ultrasonic transmitter 402 is an ultrasonic transmitter in the present invention. In this example, infrared light is used as light, but visible light may be used.

  In addition, the remote controller 400 includes a liquid crystal display unit 403. The liquid crystal display unit 403 displays a photographing range set as described later in numerical values.

  Now, the operation of the X-ray CT system 1 will be described. In this example, the remote controller 400 instructs the scan range, and the scan range is set. Specifically, first, the operator O brings the remote controller 400 close to the subject P and instructs the position A, which is the scan start position, with the remote controller 400. Then, a transmission button (not shown) provided on the remote control 400 is pressed to simultaneously transmit infrared and ultrasonic waves from the infrared transmission unit 401 and the ultrasonic transmission unit 402, respectively.

In the receiving unit 110, infrared rays and ultrasonic waves simultaneously transmitted from the remote controller 400 are received with a time difference. That is, an ultrasonic wave is received by the ultrasonic wave receiving unit 110b after a predetermined time since the infrared ray receiving unit 110a receives an infrared ray. The setting unit 1093 calculates a distance D _AG between the position A and the surface G of the gantry 100 where the receiving unit 110 is provided, based on the difference between the reception times of infrared rays and ultrasonic waves. Then, the distance _DAS is calculated by adding the distance _DAG and the distance _DGS . Thereby, the scan start position is set.

When the scan start position is set, the operator O next instructs the position B, which is the scan end position, with the remote controller 400 to transmit infrared rays and ultrasonic waves. Accordingly, in the same manner as described above, the setting unit 1093 calculates the distance D _BG between the position B and the surface G, and adds the distance D _GS to this to calculate the distance D _BS . Thereby, the scan end position is set.

  Then, when an operator inputs a scan start command on the operation console 300, the main controller 109 causes the gantry 100 and the gantry 100 and the scan end position to be scanned between the set scan start position and scan end position. The table 200 is controlled.

  As described above, according to the X-ray CT system 1 of the present example, the remote controller 400 can actually indicate and set the scan range without using laser light as in the prior art. Easy to set up. In addition, since the scan range is actually instructed, it is not necessary to set a wider scan range, unlike the case of setting numerical values, and it is possible to prevent useless exposure.

  Next, a modification of the first embodiment will be described. First, a first modification will be described with reference to FIGS. FIG. 4 is a block diagram showing a schematic configuration of an X-ray CT system according to a first modification of the first embodiment, and FIG. 5 is a diagram for explaining a scannable range in the table of the X-ray CT system shown in FIG. It is.

  In the X-ray CT system 10 of the first modification, when the scan range set by the setting means 1093 is outside the scanable range C, that fact is notified. This will be specifically described below.

  The main controller 109 has determination means 1094 for determining whether or not the scan range set by the setting means 1093 is within the scannable range C.

  Further, the gantry 100 is a distance C1 in the cradle movement direction between the one end and the other end of the scanable range C that is closer to the gantry 100 and the scanning surface S in the cradle moving direction, and the far side from the gantry 100. A storage unit (not shown) in which the distance C2 between the other end and the scan surface S in the cradle movement direction is stored.

  The liquid crystal display unit 403 of the remote controller 400 displays a display indicating that the scan range is out of the scan range when the determination unit determines that the scan range is out of the scan range. Yes. The liquid crystal display unit 403 is an example of an embodiment of notification means in the present invention.

  The operation of this first modification will be described. When the distance between the position instructed by the remote controller 400 and the scan plane S is calculated by the setting unit 1093, the determination unit 1094 determines whether or not the calculated value F is C1 <F <C2. To do. Then, when C1 <F <C2, the determination unit 1094 determines that the set scan range is within the scannable range. On the other hand, when the calculated value F is C1 or less or C2 or more, the determination unit 1094 determines that the set scan range is outside the scannable range. When it is determined that it is out of the scannable range, a signal for displaying the fact on the liquid crystal display unit 403 of the remote controller 400 is output from the gantry 100. As a result, a display indicating that the set scan range is outside the scannable range is displayed on the liquid crystal display unit 403, so that the operator can easily know.

Next, a second modification of the first embodiment will be described with reference to FIG. FIG. 6 is a block diagram showing a schematic configuration of an X-ray CT system of a second modification of the first embodiment. In this second modification, the distances D _AS and D _BS are not calculated based on the difference between the reception times of infrared and ultrasonic waves, and the scan range is not set, but based on the displacement when the remote control 400 is moved. The scan range is set.

  More specifically, in the X-ray CT system 20 of the second modified example, the remote controller 400 includes an acceleration sensor 410 instead of the infrared transmission unit 401 and the ultrasonic transmission unit 402. As the acceleration sensor 410, for example, a sensor capable of detecting accelerations related to three axes (X axis, Y axis, Z axis) is used.

  In this example, the remote controller 400 is moved from the surface G of the gantry 100 to a scan start position and a scan end position, thereby instructing a scan range.

  The gantry 100 includes a receiving unit 120 that receives a signal from the acceleration sensor instead of the receiving unit 110 having the infrared receiving unit 110a and the ultrasonic receiving unit 110b, although not particularly illustrated.

In setting the scan range in the second modification, the operator moves the remote controller 400 from the surface G of the gantry 100 to a position A (see FIG. 3), and the detected value of the acceleration sensor 410 at this time Based on the above, the setting means 1093 calculates the displacement of the remote controller 400, that is, the distance _DAG . That is, the setting means 1093 calculates the distance _DAG by performing time integration twice for the detection value of the acceleration sensor 410. Further, the operator moves the remote controller 400 from the surface G to the position B, and the setting means 1093 determines the displacement of the remote controller 400, that is, the distance D _BG based on the detection value of the acceleration sensor 410 at this time. Calculate in the same way. Then, the setting unit 1093, by calculating the distance _{D AS} by adding the distance _{D AG} and the distance _{D GS,} also calculates the distance _{D BS} by adding the distance _{D BG} and the distance _{D GS,} scan Set the range.

  Next, a third modification will be described. In the above description, the scan range is set by setting the scan start position and the scan end position. However, the reference position of the scan range is indicated, and the scan range is set based on the reference position. May be. Here, an example in which the center E of the scan range shown in FIG. 7 is set as the reference position of the scan range will be described.

  First, when the operator instructs the center E of the scan range with the remote controller 400 or moves the remote controller 400 from the surface G to the center E of the scan range, the setting unit 1093 causes the center of the scan range and the scan plane to be scanned. The distance from S is calculated. Then, the operator inputs numerically the positions A and B separated by a desired distance before and after the center E of the scan range. Accordingly, the distance between the position A as the scan start position and the scan plane S and the distance between the position B as the scan end position and the scan plane S can be calculated, and the scan range can be set.

  In the first embodiment and the modification thereof, the distance finding position is the surface G of the gantry 100, but the present invention is not limited to this. As the distance finding position, for example, the distance in the cradle movement direction between the X-ray tube 103 and the X-ray detection unit 105 such as the position corresponding to the scanning surface S on the side surface of the holder 111 or the gantry 100 is found. Can be selected as appropriate.

  In the first embodiment, the distance between the X-ray tube 103 and the X-ray detection unit 105 serving as an imaging unit and the position designated by the remote control 400, or the X-ray tube 103 and the X-ray detection unit 105. The scan range may be set based on the displacement of the remote controller 400.

  In addition, the infrared transmitter 401 and the ultrasonic transmitter 402 are provided at a distance finding position such as a part of the gantry 100 or an imaging unit, and the infrared receiver 110a and the ultrasonic receiver 110b are provided in the remote controller 400. May be.

  Furthermore, instead of moving the cradle 202, the subject on the cradle 202 may be positioned on the X-ray tube 103 and the X-ray detection unit 105 as an imaging unit by moving the gantry 100. Good. That is, the present invention does not move the subject side (mounting unit), but also moves the imaging unit while the subject is fixed, so that the subject is positioned on the imaging unit. Can be applied.

(Second embodiment)
Next, a second embodiment of the present invention will be described. In the second embodiment, the tilt angle of the gantry 100 is set as an imaging condition. FIG. 8 is a view for explaining the tilt angle setting of the gantry 100 in the X-ray CT system of the second embodiment.

  The basic configuration of the X-ray CT system 30 of the second embodiment is the same as the configuration of the X-ray CT system 20 of the second modification of the first embodiment. However, in the X-ray CT system 30 of this example, the gantry 100 has a tilt mechanism (not shown).

  Further, in this example, the tilt angle is instructed by moving the remote controller 400 so as to follow a trajectory that becomes the tilt angle to be set.

  In addition, when the remote controller 400 is moved so as to follow a trajectory that results in the tilt angle to be set, the setting means 1093 moves the remote controller 400 in the moving direction based on the detection value of the acceleration sensor 410. (Displacement) is detected, and the tilt angle of the gantry 100 is set.

  Now, a tilt angle setting method in the X-ray CT system of this example will be described. An operator holds the remote control 400 in his hand and moves the remote control 400 so as to follow a trajectory that results in a tilt angle to be set. For example, the operator moves the remote controller 400 along a locus L indicated by a two-dot chain line in FIG. At this time, the detection value of the acceleration sensor 410 is transmitted to the gantry 100. The detection value received by the receiving unit 120 of the gantry 100 is input to the setting unit 1093. The setting means 1093 detects the moving direction of the remote controller 400 based on the detection value of the acceleration sensor 410 and sets the tilt angle along the moving direction. The main controller 109 sets the tilt angle. The gantry 100 is tilted so that

  According to the X-ray CT system 30 of this example, the tilt angle can be set more easily than before because the remote controller 400 can be moved to actually indicate the desired tilt angle and set the tilt angle. Can do.

  The present invention has been described above with reference to the above embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the scope of the present invention. For example, the present invention can be applied to a PET apparatus, a SPECT apparatus, an MRI apparatus, and the like.

  Although not specifically shown, the remote controller 400 is provided with means for reading an IC tag, a barcode or the like in which information about the subject such as name and ID is stored, and the read information is transmitted to the gantry 100 to perform the operation. It may be displayed on the display device 303 of the console 300 or the like.

  Further, although not particularly illustrated, the remote controller 400 can be connected to the gantry 100 by USB connection or the like (that is, the gantry 100 is a connection body of the present invention), and the remote controller 400 is connected to the gantry 100. When X is recognized, the X-ray CT system may be activated by activation means (not shown).

  In addition, although not shown in particular, the remote controller 400 is provided with a button to be pressed when the subject becomes unwell during the examination, and when this button is pressed, the display device of the operation console 300 is displayed. A display notifying abnormality may be displayed on 303 or the like.

1 is a block diagram showing a schematic configuration of a first embodiment of an X-ray CT system which is an embodiment of a medical image photographing system according to the present invention. FIG. 2 is an overview diagram of the X-ray CT system shown in FIG. 1. It is a figure for demonstrating calculation of the distance of a scanning start position and a scanning end position, and a scanning surface in the X-ray CT system shown in FIG. It is a block diagram which shows schematic structure of the X-ray CT system of the 1st modification of 1st embodiment. It is a figure for demonstrating the scanable range in the table of the X-ray CT system shown in FIG. It is a block diagram which shows schematic structure of the X-ray CT system of the 2nd modification of 1st embodiment. It is a figure for demonstrating the setting of a scanning range in the 3rd modification of 1st embodiment. It is a figure for demonstrating the tilt angle setting of the gantry in the X-ray CT system of 2nd embodiment.

Explanation of symbols

1, 10, 20, 30 X-ray CT system 100 Gantry 103 X-ray tube 105 X-ray detector 110a Infrared receiver 110b Ultrasonic receiver 200 Table 201 Support base 202 Cradle 400 Remote control 401 Infrared transmitter 402 Ultrasonic transmitter 403 Liquid crystal display 410 Accelerometer

Claims (7)

A mounting unit for mounting a lying subject, and an imaging unit for imaging the subject, wherein at least one of the imaging unit and the mounting unit is moved to display the subject on the mounting unit as the imaging unit; A medical imaging system for taking a tomographic image,

Instructing means for transmitting information about the position when the operator places it in a position close to the subject lying on the hand and in a position for showing the imaging range with respect to the subject ;

Setting means for setting an imaging range of the subject based on information on the imaging position transmitted by the instruction means;

A medical image photographing system comprising: A determination unit for determining whether or not the shooting range set by the setting unit is within a shooting possible range;
An informing means for informing that the photographing range is outside the photographing range when the judging means determines that the photographing range is outside the photographing range;

The medical image photographing system according to claim 1 , further comprising: The information on the position is information based on a difference in reception time of light and ultrasonic waves simultaneously transmitted from the transmitting means using the light and ultrasonic transmitting means provided in the indicating means. The medical image photographing system according to claim 1 or 2 , characterized in that
The information on the position is information based on information on displacement of the instruction unit by an acceleration sensor provided in the instruction unit.

The medical image photographing system according to claim 2 or 3, wherein It said instructing means, the medical imaging system according to any one of claims 1 to 4, characterized in that a display unit for displaying a shooting range.
The instructing means has a reading section for information on the subject.
The medical image photographing system according to any one of claims 1 to 5 , wherein: A connection body of the indicating means;
An activation means for activating the system when the instruction means is connected to the connection body;
The medical image photographing system according to any one of claims 1 to 6 , further comprising:

Images