JP2018102891A - Ultrasonic image display apparatus and control program therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic image display apparatus which allows a user to easily confirm whether or not an ultrasonic image that can withstand diagnosis can be acquired.SOLUTION: An ultrasonic image display apparatus includes: a data creation unit which creates data of an ultrasonic image on the basis of an echo signal of an ultrasonic wave received by an ultrasonic probe; a portion detection unit which detects a portion where the echo signal from a subject cannot be obtained in the data of the ultrasonic image created by the data creation unit; a position detection unit which detects a position of the ultrasonic probe in a coordinate system formed in a three-dimensional space; and a display device which displays an image IP indicating the position in the three-dimensional space of at least one of the portion where the echo signal is obtained and the portion where the echo signal is not obtained on the basis of the position of the ultrasonic probe and the portion where the echo signal is not obtained.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an ultrasound image display apparatus that creates ultrasound image data based on echo signals obtained by transmitting and receiving ultrasound to and from a subject, and a control program therefor.

  In an ultrasonic diagnostic apparatus which is an example of an ultrasonic image display apparatus, an ultrasonic image may be captured and interpreted independently in completely different scenes. In such a case, it is expected that the examination can be performed efficiently even if the imager does not have interpretation skills, and that it is possible to cope with an increase in the number of examination patients.

  However, in such a case, it is assumed that the photographer cannot correctly confirm the ultrasonic image. For example, as described in Patent Document 1, when there is a substance that does not pass ultrasonic waves, such as body gas or bone, in the acquisition region of the ultrasonic image, or when the ultrasonic probe is not in good contact with the body surface For example, a situation may occur in which the photographer cannot determine that an ultrasound image suitable for interpretation is not taken.

JP 2014-161478 A

  Therefore, when imaging and interpretation are performed independently as described above, when an interpreter sees an ultrasound image at a later date, it is found that the image is inappropriate for diagnosis for the first time. is assumed. As described above, when it is later recognized that the image is inappropriate, the subject cannot be diagnosed, and another medical examination is required, which places a burden on both the subject and the examiner.

  In addition, for example, in the case of searching for cancer metastasis in the liver, when scanning the entire 3D area and confirming it, a person who is not the actually scanned examiner will check the ultrasound image later. Even so, it may not be possible to judge whether or not the whole has been confirmed without oversight, and anxiety may remain.

  Therefore, for example, it is desired that even a person who has poor interpretation skills can easily confirm whether or not an ultrasound image that can withstand diagnosis has been acquired.

  One aspect of the invention made in order to solve the above-described problems is an ultrasonic probe that transmits and receives ultrasonic waves to and from a subject in a three-dimensional space, and an ultrasonic echo signal received by the ultrasonic probe. A data generation unit that generates ultrasonic image data based on the data, and a partial detection that detects a portion in which the echo signal from the subject is not obtained in the ultrasonic image data generated by the data generation unit A position detecting unit that detects a position of the ultrasonic probe in a coordinate system formed in the three-dimensional space, and a position of the ultrasonic probe and a portion where the echo signal is not obtained, A table displaying an image showing a position in the three-dimensional space of at least one of a portion where a signal is obtained and a portion where the echo signal is not obtained And the device is an ultrasound image display apparatus comprising a.

  According to the invention of the above aspect, an image indicating a position in the three-dimensional space of at least one of a portion where the echo signal is obtained and a portion where the echo signal is not obtained is displayed, so that the three-dimensional It is possible to know a portion in the space where an echo signal from the subject is not obtained. As a result, for example, even a person with poor interpretation skills can confirm whether or not an ultrasound image that can withstand diagnosis is obtained.

1 is a block diagram showing a schematic configuration of an ultrasonic diagnostic apparatus which is an example of an embodiment of an ultrasonic image display apparatus according to the present invention. It is a block diagram which shows the structure of the display process part in the ultrasonic diagnosing device shown by FIG. It is a flowchart which shows the effect | action of embodiment. It is a figure which shows an example of the image displayed in step S2 of FIG. It is a figure which shows the other example of the image displayed in step S2 of FIG. It is a block diagram which shows the structure of the display process part in the ultrasonic diagnosing device of the modification of embodiment. It is a figure which shows the image displayed in step S2 of FIG. 3 in a modification. It is a figure which shows the other example of the image displayed in step S2 of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, an ultrasonic diagnostic apparatus that displays a medical ultrasonic image will be described as an example of an ultrasonic image display apparatus.

  An ultrasonic diagnostic apparatus 1 illustrated in FIG. 1 includes an ultrasonic probe 2, a transmission / reception beam former 3, an echo data processing unit 4, a display processing unit 5, a display device 6, an operation device 7, a control device 8, and a storage device 9. The ultrasonic diagnostic apparatus 1 has a configuration as a computer.

  The ultrasonic probe 2 includes a plurality of ultrasonic transducers (not shown) arranged in an array, and transmits ultrasonic waves to the subject by the ultrasonic transducers, Receive. The ultrasonic probe 2 is an example of an embodiment of an ultrasonic probe in the present invention.

  The ultrasonic probe 2 is provided with a magnetic sensor 10 composed of, for example, a Hall element. The magnetic sensor 10 detects magnetism generated from, for example, a magnetic generator 11 installed in a three-dimensional space. The magnetism generator 11 is constituted by a magnetism generating coil, for example. A detection signal in the magnetic sensor 10 is input to the display processing unit 5. The detection signal in the magnetic sensor 10 may be input to the display processing unit 5 via a cable (not shown), or may be input to the display processing unit 5 wirelessly. The magnetic sensor 10 is an example of an embodiment of a magnetic sensor in the present invention. The magnetic generator 11 is an example of an embodiment of the magnetic generator in the present invention.

  The transmission / reception beam former 3 supplies an electrical signal for transmitting an ultrasonic wave from the ultrasonic probe 2 under a predetermined scanning condition to the ultrasonic probe 2 based on a control signal from the control device 8. The transmission / reception beamformer 3 performs signal processing such as A / D conversion and phasing addition processing on the echo signal received by the ultrasonic probe 2, and outputs the echo data after the signal processing to the echo data processing unit 4. To do.

  The echo data processing unit 4 performs processing for creating an ultrasound image on the echo data output from the transmission / reception beamformer 3. For example, the echo data processing unit 4 performs B mode processing such as logarithmic compression processing and envelope detection processing to create B mode data.

  As illustrated in FIG. 2, the display processing unit 5 includes a position calculation unit 51, an image data creation unit 52, an image display control unit 53, a partial detection unit 54, and a position image display control unit 55. The position calculation unit 51 calculates the position of the ultrasonic probe 2 in a three-dimensional space coordinate system with the magnetism generation unit 11 as the origin, based on the magnetic detection signal from the magnetic sensor 10. The position calculation unit 51 may calculate the position of the echo data in the coordinate system of the three-dimensional space based on the position of the ultrasonic probe 2.

  The position calculator 51, the magnetic sensor 10, and the magnetism generator 11 are an example of an embodiment of a position detector in the present invention. The function of the position calculation unit 51 is an example of an embodiment of the position calculation function in the present invention.

  The image data creation unit 52 scans and converts the data input from the echo data processing unit 4 by a scan converter (Scan Converter) to create ultrasound image data. For example, the image data creation unit 52 scans the B mode data to create B mode image data. The image data creation unit 52 is an example of an embodiment of a data creation unit in the present invention. The function of the image data creation unit 52 is an example of the embodiment of the data creation function in the present invention. The ultrasonic image data is an example of an embodiment of ultrasonic image data in the present invention.

  The image display control unit 53 displays an ultrasonic image on the display device 6 based on the ultrasonic image data. The ultrasonic image is a B-mode image based on the B-mode image data, for example.

  The partial detection unit 54 detects a portion in the ultrasound image data created by the image data creation unit 52 where the echo signal from the subject is not obtained. Details will be described later. The partial detection unit 54 is an example of an embodiment of the partial detection unit in the present invention. Moreover, the function of the partial detection part 54 is an example of embodiment of the partial detection function in this invention.

  The position image display control unit 55 is based on the position of the ultrasonic probe 2 and the portion where the echo signal is not obtained, and at least one of the portion where the echo signal is obtained and the portion where the echo signal is not obtained. Is displayed on the display device 6 (see FIG. 4). The function of the position image display control unit 55 is an example of the embodiment of the display control function in the present invention.

  The display device 6 is an LCD (Liquid Crystal Display), an organic EL (Electro-Luminescence) display, or the like. On the display device 6, an ultrasonic image such as a B-mode image and an image IP are displayed. The display device 6 is an example of an embodiment of the display device in the present invention.

  The operation device 7 is an input device that accepts input from the user. For example, the operation device 7 includes a button for receiving an instruction and information input from the user, a keyboard, and the like, and further includes a pointing device such as a trackball.

  The control device 8 is a processor such as a CPU (Central Processing Unit). The control device 8 reads the program stored in the storage device 9 and controls each part of the ultrasonic diagnostic apparatus 1. For example, the control device 8 reads a program stored in the storage device 9 and causes the functions of the transmission / reception beamformer 3, the echo data processing unit 4, and the display processing unit 5 to be executed by the read program.

  The control device 8 may execute all the functions of the transmission / reception beamformer 3, all of the functions of the echo data processing unit 4, and all of the functions of the display processing unit 5 by a program, Only some functions may be executed by a program. When the control device 8 performs only some functions, the remaining functions may be performed by hardware such as a circuit.

  The functions of the transmission / reception beamformer 3, the echo data processing unit 4, and the display processing unit 5 may be realized by hardware such as a circuit.

  The storage device 9 includes a non-transitory storage medium and a transient storage medium. For example, the storage device 9 is an HDD (Hard Disk Drive), a semiconductor memory (RAM) such as a RAM (Random Access Memory), a ROM (Read Only Memory), or the like.

  The ultrasonic diagnostic apparatus 1 may have all of HDD, RAM, and ROM as the storage device 9. The storage device 9 may be a portable storage medium such as a CD (Compact Disk) or a DVD (Digital Versatile Disk).

  A program executed by the control device 8 is stored in a non-transitory storage medium such as an HDD or a ROM. The program may be stored in a non-transitory storage medium such as a CD or a DVD.

  The storage device 9 stores ultrasonic image data such as B-mode image data. Further, the storage device 9 may store raw data (raw data) obtained by the echo data processing unit 4 such as B-mode data. Further, the storage device 9 may store the position of the ultrasound probe 2 or the position of echo data calculated by the position calculation unit 51. The storage device 9 is an example of an embodiment of a storage device in the present invention.

  Now, the operation of the ultrasonic diagnostic apparatus 1 of this example will be described based on the flowchart of FIG. First, in step S1, the ultrasonic probe 2 transmits / receives ultrasonic waves to / from the subject in the coordinate system of the three-dimensional space with the magnetic generator 11 as the origin. This ultrasonic transmission / reception is performed while the operator moves the ultrasonic probe 2 in the three-dimensional space. Thereby, ultrasonic echo signals are acquired for a plurality of planes in the three-dimensional space. The image data creation unit 52 creates ultrasound image data in each of the plurality of planes based on the echo signal. The ultrasound image data is B-mode image data here. B-mode image data is stored in the storage device 9.

  In step S <b> 1, the position of the ultrasound probe 2 calculated by the position calculation unit 51 is stored in the storage device 9. More specifically, in the storage device 9, as the position of the ultrasonic probe 2, the position of the ultrasonic probe 2 corresponding to each of the plurality of planes, that is, the ultrasonic echo signal in each of the plurality of planes is acquired. The position of the ultrasonic probe 2 is stored. The position of the ultrasonic probe 2 is stored in association with B-mode image data or B-mode data.

  Next, in step S2, the position image display control unit 55 causes the display device 6 to display the image IP shown in FIG. 4 or the image IP shown in FIG. The image IP includes a first image IP1 and a second image IP2. The first image IP1 is composed of a plurality of rectangular images showing a plurality of XY planes (the directions of the X-axis and Y-axis will be described later), and corresponds to an ultrasonic wave transmission / reception surface by the ultrasonic probe 2. The first image IP1 is an image showing the position in the three-dimensional space of the part where the echo signal is obtained and the part where the echo signal is not obtained on the ultrasonic transmission / reception surface. In FIG. 5, the first image IP1-1 and the first image IP1-2 are displayed as the first image IP1.

  The second image IP <b> 2 is composed of a square image showing the XZ plane, and corresponds to an ultrasonic wave transmission / reception region in the Z direction (the Z-axis direction will be described later). The second image IP2 is an image showing the position in the three-dimensional space where the echo signal is obtained and where the echo signal is not obtained in the XZ plane.

  4 and 5, the first orthogonal coordinate axis A1 and the second orthogonal coordinate axis A2 indicate the X axis, the Y axis, and the Z axis that are orthogonal to each other in the three-dimensional space. The first orthogonal coordinate axis A1 indicates a coordinate axis in the first image IP1, and the second orthogonal coordinate axis A2 indicates a coordinate axis in the second image IP2. In the first orthogonal coordinate axis A1 and the second orthogonal coordinate axis A2, the X axis is the azimuth direction of the ultrasonic probe 2, the Z axis is the elevation direction of the ultrasonic probe 2, and the Y axis Is a direction perpendicular to the X-axis and the Z-axis, and is a depth direction in the subject. In step S1, ultrasonic waves are transmitted and received while the ultrasonic probe 2 moves in the Z-axis direction.

  A process for displaying the image IP will be described in detail. First, the partial detector 54 detects a portion in the B-mode image data where the echo signal from the subject is not obtained. Here, the portion where the echo signal from the subject is not obtained is a portion in which noise is included in the signal and does not accurately represent the morphological information of the living tissue in the B-mode image, and is resistant to diagnosis. This is a portion where a clear image is not obtained.

  The partial detection unit 54 may perform the detection on the B-mode image data stored in the storage device 9 as a non-transitory storage medium, or may be stored in the storage device 9 as a transient storage medium. The detection may be performed on the B-mode image data.

  The part detection unit 54 detects the part in each of the plurality of planes based on the B-mode image data in each of the plurality of planes. The part detection unit 54 detects the part based on information regarding the brightness of the B-mode image in the B-mode image data. More specifically, for example, the part detection unit 54 detects the part by performing determination based on a threshold value on the B-mode image data corresponding to each pixel.

  The determination based on the threshold will be described. In the B-mode image, the luminance of the portion where the echo signal from the subject is not obtained may be relatively low. Therefore, the determination based on the threshold is, for example, a determination for detecting whether or not the luminance in the B-mode image is equal to or lower than the required luminance. The part detection unit 54 detects a part having a required luminance or less as the part.

  Further, the partial detection unit 54 performs the threshold determination instead of or in addition to the above threshold determination, and for the B mode data corresponding to each pixel, the distribution of the value of the B mode data in a required region including the pixel is distributed. It is also possible to make a determination based on this variance.

  The determination based on dispersion will be described. In the B-mode image, the portion where the echo signal from the subject is not obtained does not accurately reflect the structure information of the living tissue, and the luminance difference between the pixels may be small. Therefore, the determination based on the dispersion is a determination for detecting whether or not there is a luminance variation in the B-mode image. The part detector 54 detects a part that is equal to or less than a required variance value as the part.

  The partial detection unit 54 may make a determination based on a distribution degree (for example, standard deviation, variation coefficient, etc.) other than dispersion.

  The detection by the partial detection unit 54 may be performed after echo signals are acquired in all of a plurality of planes and B-mode image data is created. The detection by the partial detection unit 54 may be performed every time an echo signal is acquired in each of a plurality of planes and B-mode image data is created.

  When the detection by the partial detector 54 is performed, the position image display controller 55 detects the ultrasonic wave corresponding to the portion where the echo signal detected by the partial detector 54 is not obtained and the plane where the portion is detected. Based on the position of the probe 2, the image IP is displayed on the display device 6. More specifically, when the position of the ultrasound probe 2 is stored in the storage device 2, the position calculation unit 51 calculates the position of echo data in the coordinate system of the three-dimensional space based on the position information. To do. Then, the position image display control unit 55 displays the image IP on the display device 6 based on the position information of the echo data and the part detected by the part detection unit 54.

  When the position information of the echo data is stored in the storage device 2, the position image display control unit 55 calculates the image IP based on the position information of the echo data and the part detected by the part detection unit 54. It is displayed on the display device 6.

  The position image display control unit 55 displays the part where the echo signal detected by the part detection unit 54 is not obtained as the first part R1 in the first image IP1, and the other part as the second part. Displayed as part R2. The first portion R1 and the second portion R2 may be displayed in different colors, for example.

  When both the determination based on the threshold and the determination based on the dispersion are performed by the part detection unit 54, both the part detected by the determination based on the threshold and the part detected by the determination based on the dispersion are used as the first part R1. May be displayed.

  The first image IP1-1 is an image in which the first portion R1 does not exist at a position where the distance in the depth direction from the body surface is smaller than the required distance D in the living tissue of the subject. That is, the first image IP1-1 is an image in which the first portion R1 exists only in a relatively deep portion of the subject. On the other hand, the first image IP1-2 is an image in which the first portion R1 is present at a position where the distance in the depth direction from the body surface is smaller than the distance D.

  In the second image IP2, the position image display control unit 55 has a portion where the echo signal from the subject is not obtained at a position where the distance in the depth direction from the body surface is smaller than the distance D. The displayed part is displayed as the first part R1, and the other part is displayed as the second part R2.

  The distance D may be set by the operator inputting on the operation device 7.

  According to this example described above, the image IP is displayed, so that the operator can know the part where the echo signal is obtained and the part where the echo signal is not obtained in the three-dimensional space. This makes it easy to check whether an image that can withstand diagnosis is obtained even if a person with poor interpretation skills is an operator, for example, and easily determine whether it is necessary to scan again can do. Further, the operator can know in which direction the ultrasonic probe 2 should be moved before performing the scan again by confirming which part the echo signal is not obtained. In particular, the operator can easily know to which side the ultrasonic probe 2 should be moved in the direction along the Z-axis by referring to the second image IP2, for example.

  In addition, when the subject that is the object of ultrasound transmission / reception in step S1 is in the examination room, the processing in step S2 is performed to determine whether the subject needs to be scanned again. Can be judged. As a result, it is possible to prevent a situation in which re-inspection is performed at a later date, so that inspection efficiency can be improved.

  Next, a modification of the embodiment will be described. In this modification, the display processing unit 5 includes an obstacle detection unit 56 as shown in FIG. 6 in addition to the components described in the above embodiment. The obstacle detection unit 56 detects an obstacle that shields the ultrasonic wave based on the part detected by the part detection unit 54.

  Also in this example, basically the same processing as the flowchart shown in FIG. 3 is performed. However, in step S2, the position image display control unit 55 displays the image IP shown in FIG. The image IP includes a third image IP3, a fourth image IP4, and a fifth image IP5. The third image IP3 is an image made up of a figure of a human body simulating the subject. The fourth image IP4 is an image composed of a solid line indicating the position of the transmission / reception surface of the subject by the ultrasonic probe 2. The fifth image IP5 is an image composed of a broken line indicating the position of the obstacle in the subject detected by the obstacle detection unit 56. The fifth image IP5 is an example of an embodiment of an image showing an obstacle in the present invention.

  The fourth image IP4 includes a first portion R1. Further, a part of the fourth image IP4 includes a second portion R2.

  The position image display control unit 55 performs the fourth operation based on the position where the echo signal detected by the partial detection unit 54 is not obtained and the position of the ultrasonic probe 2 corresponding to the plane where the part is detected. The image IP4 is displayed. The fourth image IP4 is displayed at a position corresponding to the transmission / reception surface of the subject in the three-dimensional space in the third image IP3.

  The alignment between the coordinate system of the third image IP3 and the coordinate system of the three-dimensional space will be described. For example, the operator completes the alignment by performing an input on the operation device 7 instructing the alignment process with the ultrasonic probe 2 placed at a predetermined reference position in the subject. The correspondence between the reference position and the corresponding position coordinate in the third image IP3 and the correspondence between the distance in the three-dimensional space and the corresponding distance in the third image IP3 are specified and stored in the storage device 9. Yes. Therefore, after the alignment process is performed, the position image display control unit 55 performs the fourth image IP3 in the fourth image IP3 based on each of the above-described correspondences and the position information of the ultrasonic probe 2. The position where the image IP4 is to be displayed is specified.

  The part where the echo signal detected by the part detection unit 54 is not obtained is displayed as the first part R1 in the fourth image IP4, and the part where the echo signal is obtained is the second part in the fourth image IP4. As part R2. The display form is different between the first part R1 and the second part R2. For example, the first part R1 and the second part R2 are displayed in different colors. The fourth image IP4 is an image showing the position in the three-dimensional space of the part where the echo signal is obtained and the part where the echo signal is not obtained on the ultrasonic transmission / reception surface.

  More specifically, in the fourth image IP4, the first portion R1 is a portion where an echo signal is not obtained at a position where the distance from the body surface is smaller than the distance D. Displayed in the part. Therefore, when there is a portion where an echo signal is not obtained only at a position where the distance from the body surface is equal to or greater than the distance D, the first portion R1 is displayed in the fourth image IP4. Only the second portion R2 is displayed.

  The position image display control unit 55 displays the fifth image IP5 on the boundary portion between the first portion R1 and the second portion R2 based on the position of the portion where the echo signal is not obtained.

  According to this modification, in addition to the above-described effects, the operator can know the position of the obstacle by displaying the fifth image IP5.

  As mentioned above, although this invention was demonstrated by the said embodiment, of course, this invention can be variously implemented in the range which does not change the main point. For example, the detection method by the partial detection unit 54 is not limited to the above-described method, and any method can be used as long as it can detect a portion where an echo signal from the subject is not obtained. An example of such a method will be described. For example, B-mode image data may be created based on a signal received by an ultrasonic transducer without transmitting an ultrasonic wave from the ultrasonic probe 2 before the detection of the partial detection unit 54 in step S2. . The B-mode image data created in this way is set as reference B-mode image data. In step S <b> 2, the partial detection unit 54 compares the reference B-mode image data with the B-mode image data obtained in step S <b> 1 in each pixel, and the difference in luminance is smaller than a required threshold value in the comparison result. Is determined as a portion where an echo signal from the subject is not obtained. The reference B-mode image data is noise data, and when the above-described luminance difference is smaller than a required threshold value, the B-mode image data obtained in step S1 includes only a signal having the same level as noise. It is not considered.

  Further, as the image IP, an image indicating a position in one of the three-dimensional spaces of a portion where the echo signal is obtained or a portion where the echo signal is not obtained may be displayed.

  Further, as shown in FIG. 8, a first image IP1 having first portions R1-1 and R1-2 may be displayed. The first portions R1-1 and R1-2 are portions where an echo signal from the subject is not obtained. However, the first portion R1-1 is a portion whose distance in the depth direction from the body surface is smaller than the required distance D, and the second portion R1-2, on the contrary, is a depth from the body surface. The direction distance is the same as or larger than the required distance D. Each of the first portions R1-1 and R1-2 has a different display form. In FIG. 8, the first portion 1-1 is indicated by dots, but each of the first portions R1-1 and R1-2 may be displayed in a different color. Further, the first portions R1-1 and R1-2 are displayed in different colors, such as being displayed in a color different from that of the second portion R2.

  Further, the partial detection unit 54 may detect a portion where an echo signal from the subject is not obtained based on raw data such as B-mode data instead of the B-mode image data. In this case, the echo data processing unit 4 is an example of an embodiment of a data creation unit in the present invention, and the function of the echo data processing unit 4 is an example of an embodiment of a data creation function in the present invention. The B-mode data is an example of an embodiment of ultrasonic image data in the present invention.

DESCRIPTION OF SYMBOLS 1 Ultrasonic diagnostic apparatus 2 Ultrasonic probe 6 Display device 8 Control device 9 Storage device 10 Magnetic sensor 11 Magnetic generation part 51 Position calculation part 52 Image data creation part 53 Image display control part 54 Partial detection part 55 Position image display control part 56 Obstacle detection unit

Claims (9)

An ultrasound probe that transmits and receives ultrasound to and from a subject in a three-dimensional space;
A data creation unit that creates ultrasonic image data based on an ultrasonic echo signal received by the ultrasonic probe;
In the ultrasonic image data created by the data creation unit, a partial detection unit that detects a portion where the echo signal from the subject is not obtained;
A position detector for detecting the position of the ultrasonic probe in a coordinate system formed in the three-dimensional space;
Based on the position of the ultrasonic probe and the portion where the echo signal is not obtained, the position in the three-dimensional space of at least one of the portion where the echo signal is obtained and the portion where the echo signal is not obtained is determined. A display device for displaying the image shown,
An ultrasonic image display device comprising: Based on the part detected by the part detection unit, an obstacle detection unit that detects an obstacle that shields ultrasonic waves,
The display device displays an image showing the obstacle;
The ultrasonic image display apparatus according to claim 1.   The ultrasonic image display device according to claim 1, wherein the partial detection unit detects the portion based on information corresponding to a luminance of the ultrasonic image in the data of the ultrasonic image. The data creation unit is configured to generate ultrasonic image data on each of the plurality of planes based on echo signals obtained by transmitting and receiving ultrasound to and from the plurality of planes in the three-dimensional space by the ultrasonic probe. Create
The partial detector detects the portion in each of the plurality of planes based on ultrasonic image data in each of the plurality of planes.
The ultrasonic image display apparatus as described in any one of Claims 1-3.   The said position detection part is comprised including the magnetic generation part installed in the said three-dimensional space, and the magnetic sensor which is provided in the said ultrasonic probe and detects the magnetism of the said magnetic generation part. The ultrasonic image display device according to any one of 4. A storage device for storing the position of the ultrasonic probe detected by the position detector;
The display device displays the image using the position of the ultrasonic probe stored in the storage device as the position of the ultrasonic probe.
The ultrasonic image display device according to any one of claims 1 to 5, wherein A storage device that stores the position of the ultrasonic image data specified based on the position of the ultrasonic probe in the three-dimensional space;
The display device displays the image based on a position of the ultrasonic image data stored in the storage device and a portion where the echo signal is not obtained;
The ultrasonic image display apparatus as described in any one of Claims 1-5. An ultrasound probe that transmits and receives ultrasound to and from a subject in a three-dimensional space;
A position detection device for detecting the position of the ultrasonic probe in a coordinate system formed in the three-dimensional space;
A display device;
A processor;
With
The processor is
A data creation function for creating ultrasound image data based on ultrasound echo signals received by the ultrasound probe;
In the ultrasonic image data created by the data creation function, a partial detection function for detecting a portion where the echo signal from the subject is not obtained;
Based on the position of the ultrasonic probe and the portion from which the echo signal is not obtained, the display device has at least one of the tertiary portion of the portion from which the echo signal is obtained and the portion from which the echo signal is not obtained. A display control function for displaying an image indicating a position in the original space;
An ultrasonic image display device that executes a program. An ultrasound probe that transmits and receives ultrasound to and from a subject in a three-dimensional space;
A position detection device for detecting the position of the ultrasonic probe in a coordinate system formed in the three-dimensional space;
A display device;
A processor;
A control program for an ultrasonic image display device comprising:
The control program is
A data creation function for creating ultrasound image data based on ultrasound echo signals received by the ultrasound probe;
In the ultrasonic image data created by the data creation function, a partial detection function for detecting a portion where the echo signal from the subject is not obtained;
Based on the position of the ultrasonic probe and the portion from which the echo signal is not obtained, the display device has at least one of the tertiary portion of the portion from which the echo signal is obtained and the portion from which the echo signal is not obtained. A display control function for displaying an image indicating a position in the original space;
An ultrasonic image display device that causes the processor to execute.