JPH0622966A - Ultrasonic diagnostic device - Google Patents

Abstract

PURPOSE:To permit the favourable recognition and display of the three- dimensional position relation of a vein and the position relation between organs and veins. CONSTITUTION:The blood flow information inputted into a blood flow information processor 4 is allowed to correspond to the spatial coordinates each other and stored in a blood flow information memory 5. The coordinate axis of the display coordinates is set arbitrarily by a three-dimensional coordinate converter 6. A two-dimensional image converter 7 coordinate-converts the blood flow information which is coordinate-converted by the converter 6, and the blood flow information is stored in an image memory 8. The necessary blood flow information is successively read out from the memory 8, and the three- dimensional blood flow information is displayed on a display device 10. While, the relative mark information generated in a marker generator 11-1 is coordinate-converted similarly to the case of the blood flow information by the converter 6, and coordinate-converted on the two-dimensional displayed coordinates by a converter 7, and memorized in a marker memory 9, and the display device 10 successively reads out the relative mark, which is displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical ultrasonic diagnostic apparatus, and more particularly to an ultrasonic diagnostic apparatus for displaying three-dimensional information of a subject.

[0002]

2. Description of the Related Art In an ultrasonic diagnostic method, anatomical information represented by a B-mode image as a representative example, motion information of an organ in a living body represented by an M-mode image, and Doppler effect represented by blood flow imaging as a representative example. The information is used for diagnosis by using the functional information and the like associated with the movement of the moving object in the living body using the. Further, typical scanning methods for ultrasonic waves in the living body include electronic scanning and mechanical scanning. Here, the electronic scanning method will be described.

The electronic scanning method uses an array type ultrasonic probe (probe) in which a plurality of ultrasonic transducers are provided side by side, and in the case of linear electronic scanning, a plurality of ultrasonic transducers are regarded as one unit. This is a method of exciting the ultrasonic transducer of one unit and transmitting the ultrasonic beam. For example, 1
This is a scanning method in which the position of the element of one unit is excited while being sequentially changed while shifting the pitch for each transducer, thereby electronically shifting the transmission point position of the ultrasonic beam.

The ultrasonic transducers excited so that the ultrasonic waves are converged as a beam are generated by shifting the excitation timing between those positioned at the center of the beam and those positioned laterally. The reflected ultrasonic waves are focused (electronically focused) by utilizing the phase difference between the generated acoustic waves of the ultrasonic transducer. Then, the reflected ultrasonic waves are received by the same oscillator as in the case of excitation and converted into electric signals by the echo information by each transmission / reception, for example, a tomographic image is formed,
Visually display an image on a cathode ray tube.

Further, in the case of sector electronic scanning, the ultrasonic wave transmitting direction is sequentially changed into a fan shape for each pulse of the ultrasonic beam with respect to one unit of the ultrasonic transducer group to be excited. The excitation timing of the vibrator is changed according to the desired direction, and the subsequent processing is basically the same as the above-mentioned linear electronic scanning method.

In addition to the linear and sector electronic scanning methods as described above, there is also mechanical scanning in which an ultrasonic wave is transmitted by attaching a transducer (probe) to the scanning mechanism and interlocking the scanning mechanism.

On the other hand, in the imaging method, in addition to the B-mode image in which signals accompanying ultrasonic transmission / reception are combined to form a tomographic image, an M-mode image in the same direction and fixed scanning is typical. This M-mode image displays a temporal change of the ultrasonic wave transmitting / receiving part, and is particularly suitable for diagnosis of a moving organ such as the heart.

[0008] The ultrasonic Doppler method, which is a typical example of blood flow imaging, is a method for obtaining and visualizing functional information associated with movement of an object in a living body. The ultrasonic Doppler method utilizes the ultrasonic Doppler effect in which the frequency of the reflected wave shifts in proportion to the moving speed of the moving object when the ultrasonic wave is reflected by the moving object. Specifically, an ultrasonic rate pulse (or continuous pulse) is transmitted to the inside of the living body, the frequency shift due to the Doppler effect is obtained by the phase change of the reflected wave echo, and movement at the depth position where the echo is obtained. Obtaining motion information of an object.

According to the ultrasonic Doppler method, the direction of blood flow at a certain position in the living body, the flow state such as whether the blood flow is disturbed or regular, the flow pattern, the velocity value, etc. You can know the flow condition. The conventional ultrasonic diagnostic apparatus collects and displays tomographic images, that is, two-dimensional image data.

[0010]

In contrast to the above-mentioned conventional ultrasonic diagnostic apparatus, since blood vessels, organs and the like inherently have a three-dimensional structure, it is necessary to obtain more useful diagnostic information. There is a potential need for development of an ultrasonic diagnostic apparatus capable of collecting and visually displaying a three-dimensional image, and there has been a demand for realization and provision of such an ultrasonic diagnostic apparatus.

If a three-dimensional display is realized in the ultrasonic diagnostic apparatus, the running and connection states of blood vessels can be visually displayed clearly, and the shapes of organs can be displayed clearly, so that the diagnosis site and the case More detailed,
And, it can contribute to more accurate diagnosis. However,
In order to realize the above-mentioned ultrasonic diagnostic apparatus capable of collecting and visually displaying three-dimensional images, it is necessary to solve the following technical problems.

1. Display Problems Multiple blood vessels are running when three-dimensionally displaying a blood vessel or the like, or when blood vessels that are running in a complicated way are recognized and the surface display is performed, the blood vessels interfere with each other. When the blood vessel in the back is not recognized and the organs around the blood vessel and the blood vessel are displayed at the same time,
The speckles peculiar to B mode obscure the boundaries of the organ parenchyma, hinder the recognition of blood vessels, and make it difficult to understand the positional relationship between organs and blood vessels. When an inspector uses the array lobe of (1) to perform an inspection while viewing the display information, it is difficult to understand the reference position of the operation in the display information because the directional axes that operate the scanning lines extend over two axes.

2. Problems in operation When a two-dimensional array probe is used to perform three-dimensional volume scanning, the size and weight of the two-dimensional array probe and the signal cable to be connected are increased as compared with the conventional one-dimensional array probe. It is difficult to handle because it is thick.

The present invention has been made in view of the above-mentioned requirements and problems, and a first object of the present invention is to satisfactorily recognize the three-dimensional positional relationship between blood vessels and the positional relationship between organs and blood vessels. An object of the present invention is to provide an ultrasonic diagnostic apparatus that can display as much as possible. A second object of the present invention is to provide an ultrasonic diagnostic apparatus that can reduce the burden on the inspector and shorten the inspection time even when using a two-dimensional array probe.

[0015]

In order to achieve the above object, a first ultrasonic diagnostic apparatus of the present invention comprises a transmission system for transmitting ultrasonic waves to a subject and ultrasonic waves from the subject. Receiving system for receiving the blood flow information, a processing system for collecting and processing the received blood flow information, a memory for storing the processed blood flow information, and an arbitrary blood flow information read from the memory The three-dimensional coordinate conversion means for arbitrarily setting the display coordinate axes when the three-dimensional coordinate position above is reconstructed on the two-dimensional plane image, and the arbitrarily converted coordinate-converted blood flow information are displayed. Two-dimensional coordinate conversion means for reconstructing on an arbitrary two-dimensional plane image, blood flow information that has undergone a series of coordinate conversions by the three-dimensional coordinate conversion means and two-dimensional coordinate conversion means, and a series of coordinate conversions. Displays the relative markers with corresponding changes in shape and display position. And having means for the.

The second ultrasonic diagnostic apparatus of the present invention is
A transmission system that transmits ultrasonic waves to the subject, a reception system that receives ultrasonic waves from the subject, collects the received information, separates information other than blood flow information and blood flow information, A processing system that performs independent processing on both information, a memory that stores each processed information and reads arbitrary information,
The display coordinate axes for reconstructing the three-dimensional coordinate position of the ultrasonic information obtained from the subject on the two-dimensional plane image are the ultrasonic information of the blood flow and the ultrasonic information other than the blood flow. A three-dimensional coordinate conversion unit for arbitrarily setting, a two-dimensional coordinate conversion unit for reconstructing the information of the both on a two-dimensional plane image, a three-dimensional coordinate conversion unit, and a series of coordinates by the two-dimensional coordinate conversion unit. Relative marker whose shape and display position are changed corresponding to the transformed ultrasonic information of blood flow and ultrasonic information other than blood flow, and the series of coordinate transformation of one or either of the information. And display means for displaying.

Further, a third ultrasonic diagnostic apparatus of the present invention is the ultrasonic diagnostic apparatus of the second aspect, wherein the transmission system has an ultrasonic probe in which ultrasonic transducers are two-dimensionally arranged. , Each ultrasonic transducer or an array of ultrasonic transducers and a scan marker are made to correspond to each other, and the initial setting before arbitrary conversion of the display coordinate axis of three-dimensional ultrasonic information is made to correspond to the scan marker and the scan marker. And a relative marker are displayed so as to correspond to each other in terms of position.

A fourth ultrasonic diagnostic apparatus of the present invention is characterized in that, in the above-mentioned third ultrasonic diagnostic apparatus, it has a supporting mechanism having a three-dimensional degree of freedom for positioning the ultrasonic probe.

A fifth ultrasonic diagnostic apparatus of the present invention is the same as the fourth ultrasonic diagnostic apparatus, wherein the ultrasonic probe scanning position detecting means and the ultrasonic probe position information are used to observe the object. A means for determining a point by dividing a target site on the subject into a plurality of parts, a means for correcting the determined observation point, and a body marker indicating the observation point on the subject corresponding to the observation point are displayed. And means.

[0020]

With the above structure, the first ultrasonic diagnostic apparatus of the present invention transmits the ultrasonic wave to the subject by the transmitting system and receives the ultrasonic wave from the subject by the receiving system, and the processing system. Collects and processes the received blood flow information, and stores the processed blood flow information in the memory. Then, the display coordinate axes when the three-dimensional coordinate conversion unit reads arbitrary blood flow information from the memory and reconstructs the three-dimensional coordinate position on the subject in the blood flow information on the two-dimensional plane image. Is arbitrarily set, the two-dimensional coordinate conversion means reconstructs the blood flow information arbitrarily coordinate-converted by the three-dimensional coordinate conversion means on an arbitrary two-dimensional plane image, and the display means displays the three-dimensional coordinate conversion means and The blood flow information that has been subjected to a series of coordinate conversions by the two-dimensional coordinate conversion means, and the relative marker whose shape and display position are changed corresponding to the series of coordinate conversions are displayed.

The second ultrasonic diagnostic apparatus of the present invention is
The transmission system transmits ultrasonic waves to the subject, the processing system receives ultrasonic waves from the subject by the reception system,
The received information is collected, the blood flow information and the information other than the blood flow information are separated, the two pieces of information are independently processed, and the memory stores each piece of processed information to read arbitrary information. Then, the display coordinate axis when the three-dimensional coordinate conversion means reconstructs the three-dimensional coordinate position of the ultrasonic information obtained from the subject on the two-dimensional plane image is the ultrasonic information of the blood flow and the blood flow. The ultrasonic information other than the above is arbitrarily set, the two-dimensional coordinate conversion means reconstructs both information on a two-dimensional plane image, and the display means provides a series of three-dimensional coordinate conversion means and two-dimensional coordinate conversion means. The shape and the display position are changed in correspondence with the ultrasonic information of the blood flow and the ultrasonic information other than the blood flow that have been subjected to the coordinate conversion, and the series of coordinate conversion of one or either of the information. Display relative markers.

Furthermore, a third ultrasonic diagnostic apparatus of the present invention corresponds to each of the ultrasonic transducers of the ultrasonic probe or an array of ultrasonic transducers and a scan marker in the second ultrasonic diagnostic apparatus. Then, the initial setting before the arbitrary conversion of the display coordinate axis of the three-dimensional ultrasonic information is made to correspond to the scan marker in position, and the scan marker and the relative marker are displayed in position to correspond to each other.

In a fourth ultrasonic diagnostic apparatus of the present invention, in the above-mentioned third ultrasonic diagnostic apparatus, a supporting mechanism having a three-dimensional degree of freedom positions the ultrasonic probe.

A fifth ultrasonic diagnostic apparatus of the present invention is the ultrasonic diagnostic apparatus according to the fourth ultrasonic diagnostic apparatus, wherein the position detecting means detects the scanning position of the ultrasonic probe and the determining means detects the ultrasonic probe position. From the information, the observation point on the subject is determined by dividing the target site on the subject into multiple parts, the determined observation point is corrected by the correction means, and the display means makes the observation point correspond to the observation point on the subject. Display the body marker that indicates the observation point.

[0025]

【Example】

<Embodiment 1> FIG. 1 is a block diagram showing the configuration of an embodiment of a first ultrasonic diagnostic apparatus according to the present invention. The ultrasonic diagnostic apparatus (hereinafter referred to as the present apparatus) has a configuration capable of collecting blood flow information three-dimensionally, and includes an ultrasonic probe 2 capable of three-dimensionally scanning a living body and an ultrasonic probe 2. A transmitter 1 for transmitting a transmission signal, a receiver 3 for receiving and processing a signal received by an ultrasonic probe 2, a blood flow information processor 4 for detecting blood flow information from a received signal sent from the receiver 3, The blood flow information memory 5 that stores the detected blood flow information, the information necessary for display from the blood flow information memory 5, and the process for converting the display coordinates arbitrarily, and further, the marker generator 11-1. The three-dimensional coordinate converter 6 that performs the same conversion process as the blood flow information on the display coordinate axis of the relative mark information generated in step S6, and the blood flow information and the blood flow information converted to arbitrary coordinate axes. Relative mark information converted to the same coordinate axis and A two-dimensional mapping converter 7 for converting a two-dimensional image, an image memory 8 for storing the two-dimensionally converted image, and a marker memory 9 for storing the two-dimensionally converted relative mark information. A display 10 for selecting and displaying necessary information from the image memory 8 and the marker memory 9, an operation panel 10 for operating the apparatus, and a system controller as a control unit for controlling the overall operation of the apparatus (see FIG. (Not shown), and. Next, the operation of this device will be described below.

1-1. Operation When a transmission signal is transmitted from the transmitter 1 to the ultrasonic probe 2, the ultrasonic probe 2 transmits ultrasonic waves to a subject (not shown). The signal reflected from the subject is received by the ultrasonic probe 2. Further, ultrasonic waves are transmitted and received several times in the same scanning line direction to detect blood flow information. Furthermore, in order to obtain three-dimensional information, the same transmission / reception is performed by changing the direction, and three-dimensional scanning is performed.

The received signal is processed by the receiver 3 and then input to the blood flow information processor 4. The blood flow information processor 4 detects the Doppler shift from the phase change at each depth using the transmission / reception signals several times in a certain scanning line direction, and obtains the blood flow information at each depth. By performing this process for each scan line, three-dimensional blood flow information of the subject can be obtained. The detected blood flow information is stored in the blood flow information memory 5. The detected blood flow information and the spatial coordinates of voxels are stored in the blood flow information memory 5 in a one-to-one correspondence (see 1-2). The coordinate axes of display coordinates are arbitrarily set by the three-dimensional coordinate converter 6. The configuration and operating principle of the three-dimensional coordinate converter 6 will be described later (see 1-3).

When displaying the running of blood vessels on the display 10,
Since it is displayed from a certain viewpoint in the observation coordinates,
The initial setting of the spatial coordinate axes in the three-dimensional coordinate converter 6 is
The one fixed to the ultrasonic probe 2 is used (see 1-4).

The two-dimensional mapping converter 7 uses a projection method algorithm so that the one closest to the front of the display screen can be seen and the one behind it cannot be seen, as when a human looks at a normal one. The blood flow information coordinate-converted from the three-dimensional coordinate converter 6 in accordance with (described later; see 1-5) is used as a normal DS.
C (Digital Scan Converter; Digital Scan Conve
rter) performs coordinate conversion on a two-dimensional display coordinate axis (see 1-5).

The blood flow information converted so that it can be displayed in this manner is stored in the image memory 8. Then, necessary blood flow information is sequentially read from the image memory 8 and the display 1
Three-dimensional blood flow information is displayed at 0.

On the other hand, as the relative mark information generated by the marker generator 11-1, information fixed to the ultrasonic probe 2 is used as the initial setting of the spatial coordinates, like the blood flow information. The relative mark information is subjected to the same coordinate conversion as the blood flow information by the three-dimensional coordinate converter 6, and is converted into the coordinate on the two-dimensional display coordinates by the two-dimensional mapping converter 7 like the blood flow information. Memorized in. Then, the display 10 sequentially reads out the necessary relative marks from the marker memory 9 and displays the relative marks.

In this case, if the display coordinates are converted from the initial settings by executing arbitrary coordinate conversion, the display position of the relative mark moves in the same manner as the blood flow information. At this time, due to the asymmetry of the relative mark, the shape of the relative mark undergoes a characteristic deformation as the display coordinates are converted.

By the change of the relative mark by these,
The examiner can constantly grasp what positional relationship the displayed blood flow image has in the subject even after the display coordinate conversion of the blood flow image (see 1-6).

Further, the relative mark is displayed at a constant distance from the center of the blood flow image so that the blood flow does not interfere with the image display. An example of rotational coordinate conversion is shown in FIG. 9 showing a series of displayed blood flow images and relative marks (see 1-7).

1-2. Three-Dimensional Memory Configuration FIG. 2 is a conceptual diagram showing the configuration of the three-dimensional memory of the present invention. FIG. 3 shows a blood flow image in the subject and a blood flow data image in the memory space. It is explanatory drawing which shows correspondence. Figure 2
, The origin is θ, the x, y, and z axes are defined as x, the scanning direction in one slice, y is the slicing method, and z is the depth direction of the subject.

At this time, the (x, y, z) space and the memory address space (xm, ym, zm) are made to correspond to the case of FIG. If the memory address of the shaded portion i (voxel) in FIG. 2 is (xmi, ymi, zmi), the image space is (i
It is expressed as a memory address of +1) 3, and the image data is stored in the memory of each address.

The blood flow image 35 of the subject illustrated in FIG. 3A is the blood flow image 37 in the memory space 36 of FIG. 3B.
Indicated as.

1-3. Example of Configuration of Three-Dimensional Coordinate Converter and Operation Principle [Example of Configuration] A dotted line frame in FIG. 4 is a block diagram showing an example of the configuration of the three-dimensional coordinate converter of the present invention. The three-dimensional coordinate converter 6 includes a vector A controller 61, a multiplier 62,
It is composed of a vector B controller 63 and an adder 64.

The three-dimensional coordinate converter 6 reads the data corresponding to the ROI (region of interest) from the blood flow memory 5,
A configuration in which the memory A is multiplied by a vector A (output of the vector A controller 61) according to the following formula 1 by a multiplier 62, and the output of the vector B controller 63 (see formula 1) is added to the output. It has a configuration in which the values of the vectors A and B are changed as necessary, and arbitrary coordinate conversion can be performed. However, the input data consists of the memory address space and the display value stored in the address, and the adder 64
Is composed of a drawing space (X, Y, Z) of data and a display value which is not changed. Also, the operation is performed on the memory address space (x, y, z).

[Principle of Operation] It is assumed that the bloodstream memory 5 is provided with a memory address space as shown in FIG. Now, the coordinates of the memory address space are (x, y, z),
Letting (X, Y, Z) be the coordinates of the drawing space in which the image is actually drawn after the coordinate conversion, the values of the coefficient matrix vector A and the translation initial vector B are controlled in the affine transformation of the following formula 1. This enables coordinate conversion such as rotation, reversal, enlargement, reduction, and parallel movement.

[0041]

[Equation 1] For example, with the y-axis as the rotation axis, the angle θ from the x-axis in the positive direction
The vector A rotated by can be expressed by the following mathematical formula 2.

[0042]

[Equation 2] The vector A that inverts all of the x, y, and z axes can be expressed by the following mathematical formula 2, which corresponds to changing the viewpoint in the drawing space to a position point-symmetric with the viewpoint in the memory address space.

[0043]

[Equation 3] 1-4. Initial Setting of Display Coordinate Axis FIG. 5 shows an example of display in which the display coordinate axis is fixed to the probe, and FIG. 6 shows an example of display when three-dimensional data is obtained by taking a sector scan into a plurality of slices in the slice direction. Figure 5
In, P is a subject and 2 is an ultrasonic probe.
Now, assuming that the start of scanning on the x-axis is R and the end is L, assuming that the inspector always scans R toward the right side of the subject P, the display as shown in FIG. 6 is displayed. Can be given. In FIG. 6, the right side of the subject P is displayed on the right side of the screen, and the left side of the subject P is displayed on the left side of the screen.

1-5.2 Concept of Two-Dimensional Mapping Transformation The image data in the memory address space (xmi, ymi, zmi) in FIG. 2 can be arbitrarily converted by the three-dimensional coordinate converter 6 described above (see 1-3). Coordinate transformation is applied to (xt, yt, z
It is assumed that the coordinates have been converted to t).

FIG. 7 shows the case of using FIG.
The cube data in the three-dimensional space (xt, yt, zt) of A is converted into the two-dimensional plane (X, Y) of FIG. In the algorithm of the projection method, a portion such as point A (xt0, yt0, zt0) in FIG. 7A which is shaded from the viewpoint is not displayed in FIG. 7B. Further, the unit length in the yt direction is expressed on the (X, Y) plane in a reduced form as compared with the xt and zt directions. Incidentally, in FIG. 7, (xti, yti, zt0) becomes (X0, Y0), and (xt
i, yti, zti) has been converted to (X0, YI).

1-6. Operation of Relative Mark FIG. 8 is an explanatory diagram of the operation of the relative mark. It is assumed that the display coordinates as shown in FIG. 5 are set as the initial settings and the convex scan is performed in a plurality of slices for three-dimensional display. Figure 8
8A is an original image, and the cube 80 of FIG.
It is assumed that blood flow information is read from the memory as ROI. Part B is a default image of the cube 80, and the coordinate axes are the same as the original image. The character'R 'displayed on the right side of FIGS. 8A and 8B is a relative mark (in this example, a relative mark' means the right side).
R'is used.

When the image of FIG. 8B is coordinate-converted into a viewpoint such that the lower part on the back side of the paper surface is viewed from above, the image of FIG. 8C is obtained. FIG. 8C is an image after coordinate conversion, in which only the ROI portion is subjected to coordinate conversion and is displayed together with the original image. Then, the relative mark'R 'is also coordinate-converted and shown (lower left).
In this way, if the image of FIG. 8C and the display of the original image are recorded together and recorded, even if a third person observes after the inspection, it is possible to determine from what position the image of FIG. 8C is viewed with respect to the ROI. It becomes easy to recognize.

1-7. Example of Rotational Coordinate Transformation FIG. 9 is a diagram showing a series of display states of a blood flow image and a relative mark by way of example of rotational coordinate transformation. The display coordinates as shown in FIG. It is the example which carried out multiple slices and displayed three-dimensionally. Also, 'R'
Is a relative mark. FIG. 9 sequentially shows a case in which the viewpoint is rotated to the right (clockwise) by 90 ° about the depth direction from the upper side to the lower side, and it is assumed that the initial setting is recognized. Even when a third party views these converted images, the positional relationship of the blood flow image with respect to the subject can be easily understood from the manner in which the relative mark changes.

<Embodiment 2-1> FIG. 10 is a block diagram showing the configuration of another embodiment of the second ultrasonic diagnostic apparatus according to the present invention. Ultrasonic diagnostic device (hereinafter referred to as this device)
Has a configuration capable of collecting both three-dimensional blood flow information and anatomical information other than three-dimensional blood flow information, and an ultrasonic probe 2 capable of three-dimensionally scanning a living body. , A transmitter 1 for transmitting a transmission signal to the ultrasonic probe 2, a receiver 3 for receiving and processing a signal received by the ultrasonic probe 2, and a receiver 3.
Blood flow information processing unit 4 for detecting blood flow information from the received signal sent from, a B-mode processing unit 12 processing anatomical information from the received signal sent from receiver 3, and the detected blood flow Multi-image memory 13-1 for storing information and anatomical information in a multiplexed manner, and blood flow information required for display or anatomical information required for display are extracted from the multi-image memory 13-1 and displayed in a time division manner. Processing for arbitrarily converting the coordinate axes is performed, and further, the marker generator 11
-2, the three-dimensional coordinate converter 6 that performs processing for performing the same conversion as the necessary ultrasonic information on the display coordinate axis of the relative mark information generated, and the blood flow information converted to any coordinate axis and any Multi-image memory 13-2 that multiplexes and stores the anatomical information converted into the coordinate axes of
And a two-dimensional mapping converter 7 for converting the necessary ultrasonic information extracted from the multi-image memory 13-2 and the relative mark information converted into the same coordinate axes as the ultrasonic information on a two-dimensional image. An image memory 8 for storing a two-dimensionally converted image, a marker memory 9 for storing two-dimensionally converted relative mark information, and necessary information is selected from the image memory 8 and the marker memory 9 and displayed. Display 1
0, an operation panel 10 for operating the apparatus, and a system controller (not shown) as a control unit for controlling the overall operation of the apparatus.

2-1. Operation of Embodiment 2-1 In FIG. 10, the major difference between the device of Embodiment 1 and the device of Embodiment 2-1 is not only blood flow information from the received signal sent from the receiver 3 but also other than blood flow information. Regarding the anatomical information, a processing system equivalent to the processing of blood flow information is provided in parallel and processed at the same time.

Blood flow information is obtained by the blood flow information processor 4 from the received signal transmitted from the receiver 3, and the B mode processor 1
2. Obtain anatomical information. Then, the detected blood flow information and anatomical information are stored in the multi-image memory 1
3-1, multiplex and store, and blood flow information necessary for display or anatomical information necessary for display are taken out from the multi-image memory 13-1 by time division and input to the three-dimensional coordinate converter 6. The three-dimensional coordinate converter 6 performs a process for arbitrarily converting the display coordinate axis and outputs it, and the blood flow information converted into the arbitrary coordinate axis and the anatomical information converted into the arbitrary coordinate axis are multiplexed and stored. Multi image memory 1
Input in 3-2. Further, the display coordinate axes of the relative mark information generated by the marker generator 11-2 are also input to the three-dimensional coordinate converter 6 in order to perform the same conversion as the necessary ultrasonic information, and the output thereof is output from the multi-image memory 13. -2
Is input to and is stored in a state of being multiplexed with the converted blood flow information and anatomical information. Then, the necessary ultrasonic information retrieved from the multi-image memory 13-2 and the relative mark information converted into the same coordinate axes as the ultrasonic information are:
It is displayed three-dimensionally through the same process as in the first embodiment. Further, the relative mark information corresponding to the anatomical information is processed in the same manner as the relative mark information corresponding to the blood flow information and stored in the marker memory 9. Then, the necessary relative mark information is read and displayed.

<Embodiment 2-2> FIG. 11 is a block diagram showing the configuration of another embodiment of the second ultrasonic diagnostic apparatus according to the present invention. Ultrasonic diagnostic device (hereinafter referred to as this device)
Has a configuration capable of collecting both three-dimensional blood flow information and anatomical information other than three-dimensional blood flow information as in the apparatus of FIG. A possible ultrasonic probe 2, a transmitter 1 for sending a transmission signal to the ultrasonic probe 2, a receiver 3 for receiving and processing a signal received by the ultrasonic probe 2, and a blood signal from a reception signal sent from the receiver 3. Blood flow information processor 4 for detecting flow information, B-mode processor 12 for processing anatomical information from a received signal sent from receiver 3, and blood flow information detected by blood flow information processor 4. And a B-mode memory 14 for storing the anatomical information processed by the B-mode processor 12.
And processing for extracting the blood flow information necessary for display from the blood flow information memory 5 and arbitrarily converting the display coordinate axis, and further regarding the display coordinate axis of the relative mark information generated by the marker generator 11-3. And a three-dimensional coordinate converter 6-1 that performs processing for performing the same conversion as the necessary blood flow information, and B
The anatomical information necessary for display is taken out from the mode memory 14, a process for arbitrarily converting the display coordinate axis is performed, and the display coordinate axis of the relative mark information generated by the marker generator 11-3 is also required. Three-dimensional coordinate converter 6-2 that performs processing for performing conversion similar to anatomical information
And a superimposing device 15 for simultaneously displaying the blood flow information converted into an arbitrary coordinate axis and the anatomical information converted into an arbitrary coordinate axis, and the superimposing device 15 for displaying the blood flow information and the anatomical information. A two-dimensional mapping converter 7 for converting the ultrasonic information including both and the ultrasonic information and the relative mark information converted into the same coordinate axis into a two-dimensional image.
And an image memory 8 for storing a two-dimensionally converted image
And a marker memory 9 for storing each two-dimensionally converted relative mark information, and a display 10 for selecting and displaying necessary information from the image memory 8 and the marker memory 9.
And an operation panel 10 for operating the apparatus, and a system controller (not shown) as a control unit for controlling the overall operation of the apparatus.

2-2. Operation of Embodiment 2-2 In FIG. 11, a big difference from the device of Embodiment 1 is not only the blood flow information from the received signal sent from the receiver 3 as in Embodiment 2-1 but An anatomical information other than the blood flow information is also processed in parallel with a processing system equivalent to the processing of the blood flow information.

First, the anatomical information obtained by the B-mode processor 12 is stored in the B-mode memory 14 having the memory space shown in FIG.
The anatomical information read from the memory and the relative mark information corresponding to the anatomical information are converted into arbitrary display coordinate axes by the three-dimensional coordinate converter 6-2 as described in the first embodiment. . In this way, the blood flow information and the anatomical information are simultaneously converted into arbitrary display coordinate axes. The two pieces of information that have undergone the arbitrary conversion of the display coordinates are collected as one ultrasonic wave information by the superposing device 15,
It is displayed three-dimensionally through the same process as in the first embodiment. Further, the relative mark information corresponding to the anatomical information is processed in the same manner as the relative mark information corresponding to the blood flow information and stored in the marker memory 9. Then, necessary relative mark information is read and displayed. Here, a representative example of the second and third embodiments will be described with reference to FIG.

[Display Example 1] FIG. 12 shows an example in which a blood flow image is moved to a display coordinate different from the anatomical image and displayed.
In the simultaneous display of 2A, a part of the blood flow image 41 is blocked by the anatomical image 42 and cannot be seen. However, by displaying the blood flow image 41 separately in FIG. 12C, the blood flow image 41 is blocked by the anatomical image 42. It is displayed without being displayed and the running state of the blood vessel is displayed. In the figure, 'R' is a relative mark, FIG. 11A shows the blood flow image 41 and the anatomical image 42 with the initial settings, and FIG. 11B shows the display of FIG. 11A in the blood flow information memory 5. 11C, the information corresponding to the blood flow image 41 in the blood flow information memory 5 is read out and translated by the three-dimensional coordinate converter 6-1.
It is a display example of the blood flow image 41 after conversion.

[Display Example 2] FIG. 13 shows an example in which the blood flow image and the anatomical image are displayed with the same display coordinates.
In this example, the blood flow information memory 5 is used for the blood flow image 41.
From the B-mode memory 14 for the anatomical image 42. Then, the blood flow image 41 and the anatomical image 42 are subjected to rotational coordinate conversion by the three-dimensional coordinate converters 6-1 and 6-2, respectively. FIG. 13A is an initial setting image, and when the viewpoint is moved to the right and rotated, as shown in FIGS. 13B to 13D,
The fixed B-mode section and the tertiary development of the blood vessel are displayed as if they are rotating. The relative mark'R 'is also displayed.

[Display Example 3] FIG. 14 shows an example in which the blood flow image and the anatomical image are displayed with the same display coordinates.
In this example, the blood flow information memory 5 is used for the blood flow image 41.
From the B-mode memory 14 so that the three-dimensional information is read from the B-mode memory 14 so that the display coordinates of the anatomical image 42 after coordinate conversion always correspond to the viewpoint. Then, for the blood flow image 41 and the anatomical image 42, the three-dimensional coordinate converter 6-1 and
Rotation coordinate conversion is performed according to 6-2. FIG. 14A is an initial setting image, in which the three-dimensional image 41 of the blood vessel is rotated together with the rotating coordinate system, and as shown in FIGS. 13B to 13D, the anatomical information 42 in the B-mode section fixed with respect to the viewpoint is viewed. It is displayed as it changes. The relative mark'R 'is also displayed.

[Display Example 4] FIG. 15 shows a display example 1 of FIG.
Is an application example of. In this example, for the blood flow image 41, three-dimensional information is read from the blood flow information memory 5, and for the anatomical image 42, when reading a certain cross section from the B-mode memory 14, the examiner positions the cross section in the slice direction. Or the positions of the slices in the slice direction in the ultrasonic diagnostic apparatus are sequentially selected. FIG. 15 shows a case where the blood flow image 41 and the anatomical image 42 are fixed and displayed from a certain viewpoint, but the three-dimensional coordinate converter 6-1 is displayed while the above-mentioned display is made as necessary. ,
The rotation coordinate conversion may be performed according to 6-2. In FIG. 15, B-mode tomographic images are sequentially moved and displayed in the slice direction. In FIG. 15, time t1 shows the B-mode tomographic image of the slice image 45, time t2 shows the B-mode tomographic image of the slice image 45, and time t3 shows the case of sequentially selecting the B-mode tomographic image of the slice image 45. The three-dimensional image 41 is t1, t2
, T3.

As described above, the final operations of the ultrasonic diagnostic apparatus of FIGS. 10 and 11 in the above Embodiment 2-1 and Embodiment 2-2 are the same. In addition, the operation of performing the arbitrary coordinate conversion on each of the ultrasonic information and the corresponding relative mark and displaying them tertiaryly is the same as in the case of the first embodiment. Further, the difference in operation between the apparatus of FIG. 10 and the apparatus of FIG. 11 in the processing process will be described below.

2-3. Differences in operation between the apparatus of FIG. 10 and the apparatus of FIG. 11 in the processing process, in FIG. 10, the multi-image memory 13-1 corresponds to the area corresponding to the blood flow memory 5 of FIG. 11 and the B-mode memory 14. Have areas in parallel. Further, the three-dimensional coordinate converter 6 reads blood flow information and anatomical information from the multi-image memory 13-1 in a time division manner, and performs arbitrary coordinate conversion on each information. At this time, the marker generator 11-2 generates markers corresponding to individual information in a time division manner. Each coordinate-converted ultrasonic wave information is multiplexed and stored in a memory address space in a multi-image memory 13-2 having a memory structure as shown in FIG. 5, and is combined into one ultrasonic wave information. Therefore, the output of the multi-image memory 13-2 in FIG. 10 and the superimposing device 1 in FIG.
Since the outputs of 5 are equivalent, an arbitrary coordinate transformation can be applied to each of the blood flow information and the anatomical information in the device of FIG. 10 as in the device of FIG.

FIG. 16 is a timing outline diagram of the processing around the three-dimensional coordinate converter of the apparatus of FIGS. 10 and 11 (however, the processing delay in each block is neglected for explanation). In FIG. 16, (a) is a clock timing, (b) is an output timing of the multi-image memory 13-1, (c) is an output timing of the marker generator 11-2, and (d) is a three-dimensional coordinate converter 6. Control timing,
(E) is a write timing of the multi-image memory 13-2, and (b) to (e) relate to FIG. Also,
(F) is the output timing of the B-mode memory 14, (g)
Is the output timing of the blood flow information memory 5, (h) is the output timing of the superimposing device 15, and (f) to (h) relate to FIG. 11.

<Embodiment 3> FIG. 17 is a display example of relative marks and three-dimensional ultrasonic information corresponding to a scan mark as one embodiment of the third ultrasonic diagnostic apparatus of the present invention. Is an example of displaying an ultrasonic image according to the present embodiment. In FIG. 10, 16 is an ultrasonic probe (two-dimensional array probe), 16 'is an array surface of the two-dimensional array probe, 17 is a scan mark, and 18 is a cable of the two-dimensional array probe. Also, the character'R '
Is a scan mark and displays the scan direction).

The ultrasonic diagnostic apparatus shown in FIG. 17 comprises ultrasonic probe 2 shown in FIGS. 10 and 11 in which ultrasonic transducers having scan marks 17 as shown in FIG. 17 are arranged two-dimensionally. It is constructed by replacing it with a two-dimensional array probe. In this case, the transmitter 1, the receiver 3, the blood flow information processor 4, and the B-mode processor 12 respectively receive ultrasonic waves corresponding to the two-dimensional array probe 16 and 3 received by the two-dimensional array probe 16. Processing of three-dimensional ultrasonic information.

In FIG. 18, assuming that the initial setting of the display coordinates is fixed to the probe, the inspector in FIG. 5 always displays the scan start point in correspondence with the scan mark and the relative mark 181 (FIG. In FIG. 18, the scan mark uses the same letter R as the relative mark), so the positional relationship among the subject, the display image, and the two-dimensional array probe can be easily understood. Further, for example, the inspector may orient the two-dimensional array probe 16 so that the R side is always on the right side of the subject (R indicates a simulation example) when viewed from the surface of the two-dimensional array probe 16 having the scan mark. The task of deciding is easy.

<Embodiment 4> FIG. 19 is a schematic view of an embodiment of the fourth ultrasonic diagnostic apparatus of the present invention. In particular, the structure of a support mechanism having a three-dimensional degree of freedom will be described. In FIG. 19, the support mechanism includes a cable 18, a support rod 19,
It consists of an arm 20 and a rotating part 21. The cable 18 is connected to the two-dimensional array probe 16 and suspends the two-dimensional array probe 16 from the arm 20 to give a degree of freedom in the Z-axis direction. The cable 18 includes a signal array, a power supply for driving the two-dimensional array probe 16, and the like. The support bar 19 is connected to the main body of the ultrasonic diagnostic apparatus and is connected to the rotating part 21.
It becomes the axis of rotation. The arm 20 includes the cable 18 and extends and contracts in the longitudinal direction. Further, the rotating portion 21 rotates about the support rod 19 in the xy plane, and gives flexibility in the x axis and the y axis together with the elasticity of the arm 20. This support mechanism allows the inspector to place the subject on an arbitrary position on the subject (not shown).
The work of fixing the dimensional array probe 16 becomes easy.

<Embodiment 5> FIG. 20 is a schematic view showing a probe position detecting means in a fifth embodiment of the present invention. This example is the two-dimensional array probe 1 shown in FIG.
The case where the support mechanism of No. 6 is used will be described.

FIG. 20A is a bird's-eye view of the rotating part 21, where x
The axes and the y-axis are coordinates fixed to the support rod 19. The rotary unit 21 is provided with a generally known rotary encoder 22 for coding the rotation angle θ of the rotary unit 21 with respect to the x-axis and the y-axis into an electric signal. FIG. 20B is a bird's-eye view of the arm 20. In order to code the moving distance r of the arm 20 in the longitudinal direction into the electric signal,
A generally known linear encoder 23 is provided at the expansion / contraction point 201. The probe position detecting means looks at the subject from above, and the position of the two-dimensional array probe 16 on the subject at x, y coordinates fixed to the support rod, that is, the main body of the apparatus, is determined from the change amount of θ and r in polar coordinates. The system (x, y) is judged by a judging device as shown in FIG.

FIG. 21 is a block diagram of a body mark generating section which determines an observation point on the subject and which corresponds to the observation point in this embodiment. In FIG. 21, a body mark generator 30 receives a data (electrical signal) from a rotary encoder 22 and a linear encoder 23 and converts the coordinates into a Cartesian coordinate converter 24, a difference unit 25, and a body mark that outputs body mark information. The table 26, the part selector 27, the corrected coordinate memory 28, and the corrected coordinate generator 29 are included.

5-1. Concept of Body Mark FIG. 22 shows a display example of body parts by region, FIG. 23 shows an example of a body mark table, and FIG. 24 shows a change example of body mark display.

The target subject of the two-dimensional array probe 16, for example, as shown in FIG. 22 showing the outline of the subject and the position of the probe of the subject using the scan mark 17, a neck K, abdomen F, obstetrics. When there are three S, the table (see FIG. 23) corresponding to the sites K, F, S is selected by the site selector 29 of FIG. The object to be examined is divided in order to improve the accuracy of automatic body mark selection.

Next, from the detected probe position information (x ', y'), the corresponding body marks in the body mark table 26 are sequentially output following the changes in the position information.

For example, when F is selected as the part and α (x0, y0) is selected as the initial coordinates (see FIG. 23), when the two-dimensional array probe moves from the coordinate α to the coordinates β and γ, Δx , Δy is detected and the body mark also changes. FIG. 24 is an example of a body mark that changes corresponding to changing coordinates α, β, and γ.

In the ultrasonic diagnostic apparatus of FIGS. 10 and 11, the marker generators 11-2 and 11-3 are replaced with the marker generator 31 shown in FIG. 25, and the ultrasonic probe 2 is replaced with the two-dimensional array probe 16. This device corresponds to the ultrasonic diagnostic device of this embodiment. The marker generator 31 simultaneously generates both the body mark and the relative mark. In FIG. 21, the operation in the case where the correction of the body mark automatically set due to the influence of body movement or the like is necessary will be described below.

5-2. Operation of Body Mark Correction Normal (when there is no correction) output of the correction coordinate memory 28 is initialized as a coordinate correction value: (Xr, Yr) = (0, 0), and the orthogonal coordinate converter 24 ( X,
The position information of the probe converted into the Y) coordinate is (X ′,
Y ′) = (X, Y) is input to the body mark table 26.

On the other hand, when correction is required, the coordinate correction value: (Xr, Yr) = from the correction coordinate generator 29.
(Xr, Yr) is input to the corrected coordinate memory 28, and the corrected coordinate value is output from the corrected coordinate memory 28. Then, the subtracter 25 converts the (X, Y) coordinates into (Xr, Yr).
) Is executed, and the corrected probe position information is stored in the body mark table 26 as (X ′, Y ′) = (X−Xr, Y−Yr). Hereinafter, in FIG. 21, a corrected body mark is generated according to the above-described principle of body mark generation.

In the ultrasonic diagnostic apparatus of this embodiment, the inspector is made to select the target region in order to reduce the individual difference of the subject and improve the accuracy of automatic body mark setting. Even if the two-dimensional array probe 16 is moved on the subject after the target region is selected, the body mark automatically changes in accordance with the movement, which reduces the burden on the inspector and shortens the diagnosis time. Further, since it is possible to correct the body mark, improvement in diagnostic accuracy can be expected. Although some embodiments of the present invention have been described above, it is needless to say that the present invention is not limited to the above first to fifth embodiments and various modifications can be made.

[0077]

As described above, according to the first ultrasonic diagnostic apparatus of the present invention, the image in the three-dimensional space is displayed while changing the viewpoint, and as an application of this, the image in the three-dimensional space is viewed. By rotating and displaying with respect to, the invisible portion can be seen hidden in the depth direction with respect to the viewpoint, and the inspector can image a three-dimensional image over a wide range within the ROI. Further, even when the image in the three-dimensional space moves due to rotation or the like, the display of the relative mark allows the inspector to constantly grasp how the image moves with respect to the viewpoint.

According to the second ultrasonic diagnostic apparatus, particularly when displaying both the blood vessel and the surrounding organs three-dimensionally,
By observing the blood vessel and the organ from different viewpoints, it is possible to avoid the information that disturbs the target object and display it.
Further, when displaying blood vessels in three dimensions and surrounding organs in a two-dimensional tomographic image, an arbitrary tomographic image is selectively displayed from the information of the three-dimensional organs and Therefore, it is possible to avoid displaying information that disturbs the user. With these, the examiner can easily image the three-dimensional information of only the object while recognizing the positional relationship between the blood vessel and the surrounding organs. Also in this case, the relative mark allows the inspector to constantly grasp how the image moves with respect to the viewpoint.

According to the third ultrasonic diagnostic apparatus, when the three-dimensional information is obtained by using the two-dimensional array probe, the inspector displays the relative mark on the display and the scan mark of the probe in correspondence with the display. It is possible to proceed with the inspection while recognizing the reference position for scanning in the obtained three-dimensional image.

According to the fourth ultrasonic diagnostic apparatus, since the two-dimensional array probe is provided with the support mechanism having three-dimensional freedom for positioning, even if the probe is large and heavy, the inspector does not Can be easily handled, and the burden on the inspector is reduced. In addition, display fluctuations due to camera shake and the like are reduced, and accurate diagnosis is possible.

According to the fifth ultrasonic diagnostic apparatus, by automatically displaying the body mark corresponding to the position of the two-dimensional array probe on the subject, the work of recording the diagnostic information is facilitated and the examination time is reduced. Is shortened. At this time, by dividing the target region on the subject into a plurality of parts in order to reduce individual differences of the subject, the body mark corresponding to the position of the two-dimensional array probe on each target region is automatically detected. The display accuracy can be improved. Further, even if the accuracy of the automatic display of the body mark is insufficient, the body mark can be corrected, so that the diagnosis accuracy is improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a first ultrasonic diagnostic apparatus according to the present invention.

FIG. 2 is a conceptual diagram showing a configuration of a three-dimensional memory of the present invention.

FIG. 3 is an explanatory diagram showing a correspondence relationship between a blood flow image in a subject and a blood flow data image in a memory space.

FIG. 4 is a block diagram showing a configuration example of a three-dimensional coordinate converter of the present invention.

FIG. 5 is an example of a display in which the display coordinate axes are fixed to the probe.

FIG. 6 is a display example when three-dimensional data is obtained by performing a plurality of sector scans in the slice direction.

FIG. 7 is a conceptual diagram of two-dimensional mapping conversion.

FIG. 8 is a diagram illustrating the operation of a relative mark.

FIG. 9 is an example showing a rotational coordinate conversion of a series of display states of a blood flow image and a relative mark.

FIG. 10 is a block diagram showing the configuration of an embodiment of a second ultrasonic diagnostic apparatus according to the present invention.

FIG. 11 is a block diagram showing the configuration of another embodiment of the second ultrasonic diagnostic apparatus according to the present invention.

FIG. 12 is an example of moving and displaying a blood flow image on display coordinates different from the anatomical image.

FIG. 13 is an example of displaying a blood flow image and an anatomical image while keeping the same display coordinates.

FIG. 14 is an example in which a blood flow image and an anatomical image are displayed with the same display coordinates.

FIG. 15 is an application example of the display example 1 of FIG.

16 is a timing schematic diagram of the processing around the three-dimensional coordinate converter of the apparatus of FIGS. 10 and 11. FIG.

FIG. 17 is a display example of scan marks as an embodiment of the third ultrasonic diagnostic apparatus of the present invention.

FIG. 18 is a display example of scan marks.

FIG. 19 is a schematic view of an embodiment of the fourth ultrasonic diagnostic apparatus of the invention.

FIG. 20 is a schematic diagram showing a probe position detecting means in a fifth embodiment of the present invention.

FIG. 21 is a block diagram of a body mark generation unit.

FIG. 22 is a display example of body marks by region.

FIG. 23 is an example of a body mark table.

FIG. 24 is an example of a change in body mark display.

FIG. 25 is a configuration example of a marker generator.

[Explanation of symbols]

 1 Transmitter (transmission system) 2 Ultrasonic probe 3 Receiver (reception system) 4 Blood flow information processor (processing system) 5 Blood flow information memory 6,6-1,6-2 Three-dimensional coordinate converter 7 Two-dimensional Mapping converter 8 Image memory 9 Marker memory 10 Display device 11-1, 11-2, 11-3 Marker generator 12 B mode processor (processing system) 13-1, 13-2 Multi-image memory 14 B mode memory 15 Superimposing device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuo Miyajima 1385-1 Shimoishigami, Otawara-shi, Tochigi Stock company Toshiba Nasu factory (72) Inventor Eiichi Shiki 1385-1385 Shimoishi, Otawara, Tochigi Dical Engineering Co., Ltd.

Claims (5)

[Claims] 1. A transmission system that transmits ultrasonic waves to a subject, a reception system that receives ultrasonic waves from the subject, and a processing system that collects and processes received blood flow information. A memory that stores processed blood flow information, and arbitrary blood flow information is read from the memory, and the position of the blood flow information on the subject in three-dimensional coordinates is reconstructed on a two-dimensional plane image. A three-dimensional coordinate conversion means for arbitrarily setting the display coordinate axes at the time, and a two-dimensional coordinate conversion means for reconstructing the arbitrarily coordinate-converted blood flow information on an arbitrary two-dimensional plane image,
A means for displaying blood flow information which has been subjected to a series of coordinate transformations by the three-dimensional coordinate transformation means and the two-dimensional coordinate transformation means, and a relative marker whose shape and display position are changed corresponding to the series of coordinate transformations. An ultrasonic diagnostic apparatus comprising: 2. A transmission system for transmitting ultrasonic waves to a subject, a reception system for receiving ultrasonic waves from the subject, and collecting the received information, except for blood flow information and blood flow information. Of the ultrasonic information obtained from the subject, a processing system that separates the information of each item and performs independent processing on the both information, a memory that stores each of the processed information and reads arbitrary information,
Three-dimensional coordinate conversion for arbitrarily setting the display coordinate axes for reconstructing the two-dimensional plane position on the two-dimensional plane image for each of ultrasonic information of blood flow and ultrasonic information other than blood flow Means, a two-dimensional coordinate transformation means for reconstructing the information of the both on a two-dimensional plane image, and a blood stream subjected to a series of coordinate transformations by the three-dimensional coordinate transformation means and the two-dimensional coordinate transformation means. Means for displaying a relative marker whose shape and display position have been changed corresponding to the series of coordinate transformations of the ultrasonic information other than the blood flow information and the ultrasonic information other than the blood flow, and each or either of the information. An ultrasonic diagnostic apparatus having. 3. The ultrasonic diagnostic apparatus according to claim 2, wherein the transmission system has an ultrasonic probe in which ultrasonic transducers are two-dimensionally arranged, and each of the ultrasonic transducers or the ultrasonic transducers. An array with ultrasonic transducers is made to correspond to a scan marker, and the initial setting before arbitrary conversion of the display coordinate axis of three-dimensional ultrasonic information is made to correspond to the scan marker in position and the scan marker and the relative marker are to be positioned in position. An ultrasonic diagnostic apparatus characterized by displaying in correspondence with each other. 4. The ultrasonic diagnostic apparatus according to claim 3, further comprising a support mechanism having a three-dimensional degree of freedom for positioning the ultrasonic probe. 5. The ultrasonic diagnostic apparatus according to claim 4, wherein an ultrasonic probe position detecting means and an observation point on the subject are used as a symmetrical portion on the subject based on position information of the detected ultrasonic probe. A means for dividing and determining into a plurality of means, a means for correcting the determined observation point, a means for displaying a body marker indicating an observation point on the subject corresponding to the observation point,
An ultrasonic diagnostic apparatus comprising: