JP5460484B2 - Ultrasonic data processor - Google Patents

Description

  The present invention relates to an apparatus for processing ultrasonic data obtained by transmitting and receiving ultrasonic waves.

  An ultrasonic technique using three-dimensional data collected by scanning an ultrasonic beam is known. For example, Patent Document 1 describes a technique for three-dimensionally specifying the contour of a target tissue based on volume data collected from a three-dimensional space including the target tissue. Thereby, for example, the volume of the target tissue can be calculated.

  In the technique described in Patent Document 1, a plurality of automatic trace reference sections and a plurality of manual trace reference sections are set in a three-dimensional data space. And in each manual trace reference cross section, the manual trace line which shows the outline of object tissue according to user operation is formed. Further, based on the manual trace lines formed in the plurality of manual trace reference sections, trace lines are formed in each automatic trace reference section by interpolation processing or the like. In this way, the contour of the target tissue is identified three-dimensionally based on a large number of trace lines formed in the three-dimensional data space.

  In the technique described in Patent Document 1, even when it is difficult to accurately extract the contour of the target tissue by, for example, binarization processing, according to the user operation, for example, according to the user's visual judgment, The contour of the target tissue can be specified relatively accurately. Further, in the technique described in Patent Document 1, it is possible to extract the contour of the target tissue with extremely high accuracy by further automatically correcting a manual trace line formed in response to a user operation.

  In processing that requires user operation, for example, it is desirable to reduce the burden on the user, and it is also desirable that the accuracy of the trace line obtained by the user operation is high.

  Incidentally, Patent Document 2 also describes a technique for detecting a three-dimensional contour of a target object based on volume data obtained three-dimensionally. However, the technique described in Patent Document 2 is intended to automatically and accurately detect a three-dimensional contour, and pays attention to the burden on the user and the accuracy of the trace line obtained by the user operation. It was n’t.

JP 2008-142519 A JP 2008-49158 A

  In view of the background art described above, the inventor of the present application has conducted research and development on the formation of trace lines according to user operations.

  The present invention has been made in the course of research and development, and an object thereof is to provide a technique for assisting a user in forming a trace line in accordance with a user operation.

  An ultrasonic data processing apparatus suitable for the above object is provided with a trace line corresponding to the contour of the object based on ultrasonic data obtained by transmitting and receiving ultrasonic waves to and from a three-dimensional space including the object. An ultrasonic data processing apparatus for forming a trace section setting unit for setting a manual trace section in a three-dimensional data space composed of three-dimensionally arranged ultrasonic data, and a manual operation in the three-dimensional data space. An auxiliary cross-section setting unit that sets a trace auxiliary cross-section that intersects the trace cross-section, a manual trace auxiliary unit that reflects the contour information obtained based on the trace auxiliary cross-section on the manual trace cross-section, and a manual trace cross-section that reflects the contour information And a trace line forming unit that forms a trace line in response to a user operation.

  According to the above-described preferred embodiment, the trace auxiliary cross section intersecting with the manual trace cross section is set, and the contour information obtained based on the trace auxiliary cross section is reflected in the manual trace cross section. Therefore, for example, even when the contour of an object is not clear in the manual trace section, the user can form a trace line in the manual trace section while referring to the contour information obtained through the trace auxiliary section. It becomes possible.

  One of the preferred specific examples of the ultrasonic data processing apparatus is an ultrasonic diagnostic apparatus, but the ultrasonic data processing apparatus may be realized by a computer or the like.

  In a preferred embodiment, the manual trace auxiliary unit sets a contour location on a line where the manual trace cross section and the trace auxiliary cross section intersect each other as the outline information.

  In a preferred embodiment, the manual trace auxiliary section is characterized in that an intersection of an auxiliary trace line formed in the trace auxiliary cross section and the manual trace cross section is the contour portion.

  In a preferred embodiment, the manual trace assist unit forms a reference trace line in the manual trace section based on a contour location set in the manual trace section.

  In a preferred embodiment, the trace cross-section setting unit sets the manual trace cross-section so as to intersect a reference axis set according to the form of the object in a three-dimensional data space, and the auxiliary cross-section setting unit The trace auxiliary section is set so as to include a reference axis.

  In a preferred embodiment, the reference axis is set in a reference plane selected according to the form of an object in the three-dimensional data space, and the auxiliary cross-section setting unit sets the reference plane as the trace auxiliary cross-section. It is characterized by that.

  In a preferred embodiment, the auxiliary cross-section setting unit sets an additional trace auxiliary cross-section that intersects the trace auxiliary cross-section at the reference axis.

  According to the present invention, a technique for assisting a user in forming a trace line according to a user operation is provided. For example, according to a preferred aspect of the present invention, even when the contour of an object is not clear in the manual trace section, the user can refer to the contour information obtained through the trace auxiliary section and It becomes possible to form a trace line.

1 is a diagram illustrating an overall configuration of an ultrasonic diagnostic apparatus that is preferable in the practice of the present invention. It is a figure for demonstrating the setting of the reference | standard cross section with respect to volume data. It is a figure for demonstrating the setting of a reference cross-section row | line | column. It is a figure for demonstrating an automatic trace process. It is a figure which shows the internal structure of a structure | tissue extraction part. It is a figure for demonstrating a trace auxiliary | assistant cross section. It is a figure for demonstrating the setting of the outline information using a trace auxiliary | assistant cross section. It is a figure for demonstrating the example of a setting of a some trace auxiliary | assistant cross section. It is a figure for demonstrating reflection of outline information. It is a figure which shows the other example of a setting of a trace auxiliary | assistant cross section.

  One of the preferred specific examples of the ultrasonic data processing apparatus according to the present invention is an ultrasonic diagnostic apparatus. FIG. 1 is a diagram showing an overall configuration of an ultrasonic diagnostic apparatus suitable for implementing the present invention. This ultrasonic diagnostic apparatus is used in the medical field, and particularly has a function of extracting a target tissue in a living body and calculating its volume. Examples of the target tissue include placenta, malignant tumor, gallbladder, thyroid and the like.

  In FIG. 1, a 3D probe 10 is an ultrasonic transducer that is used, for example, in contact with a body surface or inserted into a body cavity. In this embodiment, the 3D probe 10 has a 2D array transducer. The 2D array transducer is composed of a plurality of vibration elements aligned in the first direction and the second direction. An ultrasonic beam is formed by the 2D array transducer, and the ultrasonic beam is two-dimensionally scanned. As a result, a three-dimensional echo data capturing space is formed as a three-dimensional space. Specifically, the three-dimensional space is configured as an aggregate of a plurality of scanning planes, and each scanning plane is configured by one-dimensional scanning with an ultrasonic beam. It is also possible to form a three-dimensional space similar to the above by mechanically scanning the 1D array transducer instead of the 2D array transducer.

  The transmission unit 12 functions as a transmission beam former. The transmitter 12 supplies a plurality of transmission signals to the 2D array transducer with a predetermined delay relationship. As a result, a transmission beam is formed. The reflected wave from the living body is received by the 2D array transducer, and a plurality of reception signals are output from the 2D array transducer to the receiving unit 14. The receiving unit 14 performs a phasing addition process on the plurality of reception signals, and thereby outputs a reception signal (beam data) after the phasing addition. Predetermined signal processing is performed on the received signal, for example, detection, logarithmic conversion processing, and the like are performed, and beam data that is the received signal after signal processing is stored in the 3D data memory 16.

  The 3D data memory 16 has a three-dimensional storage space corresponding to a three-dimensional space that is a transmission / reception space in a living body. When writing to or reading from the 3D data memory 16, coordinate conversion is performed on each data. In the present embodiment, when writing to the 3D data memory 16, coordinate conversion from the transmission / reception coordinate system to the storage space coordinate system is executed. This constitutes volume data as will be described later. Volume data is an aggregate of a plurality of frame data (slice data) corresponding to a plurality of scanning planes, and each frame data is composed of a plurality of beam data. Each beam data consists of a plurality of echo data arranged in the depth direction. Incidentally, each configuration after the 3D data memory 16 can be configured as dedicated hardware or can be realized as a software function. For example, each configuration after the 3D data memory 16 may be realized in a computer.

  The three-dimensional image forming unit 18 executes image processing based on, for example, a volume rendering method based on the volume data stored in the 3D data memory 16, thereby forming a three-dimensional ultrasonic image. The image data is sent to the display processing unit 26. The arbitrary tomographic image forming unit 20 forms a tomographic image corresponding to an arbitrary cross section in the three-dimensional space set by the user. In that case, a data array corresponding to an arbitrary cross section in the 3D data memory 16 is read, and a B-mode image as an arbitrary tomographic image is formed based on the data array. The image data is sent to the display processing unit 26.

  The tissue extraction unit 22 extracts a target tissue (target tissue data) existing in a three-dimensional space or volume data by a tracing process detailed in Patent Document 1 (Japanese Patent Laid-Open No. 2008-142519). is there. In this case, manual trace processing and interpolation processing are used together, and automatic correction processing for each processing result is used. Furthermore, in the present embodiment, the tissue extraction unit 22 also executes processing for assisting the user in forming a manual trace line according to a user operation. These will be described in detail later. The extracted target tissue data is sent to the display processing unit 26, used for displaying an image of the target tissue, and also sent to the volume calculation unit 24.

  The volume calculation unit 24 is a module that calculates the volume of the target tissue by a volume calculation method such as a disk summation method. That is, since the tissue extraction unit 22 forms a plurality of trace line sequences as a closed loop over the entire target tissue, the volume value of the target tissue is approximately calculated based on the trace lines. In that case, the distance between each closed loop, that is, between each cross section is also used. The calculated volume value data is sent to the display processing unit 26. An Average Rotation method or the like may be used as the volume calculation method.

  Each module such as the three-dimensional image forming unit 18, the arbitrary tomographic image forming unit 20, and the tissue extracting unit 22 functions according to the operation mode selected by the user, and the display processing unit 26 corresponds to each mode. Data to be input. The display processing unit 26 performs processing such as image synthesis processing and coloring processing on the input data, and outputs the resulting data to the display unit 28. The display unit 28 displays a three-dimensional ultrasonic image, an arbitrary tomographic image, a three-dimensional image of the extracted tissue, a volume value, and the like according to the selected operation mode. Incidentally, it is also possible to synthesize and display a 3D image of the entire 3D space and a 3D image of the target tissue.

  The control unit 30 controls the operation of each component shown in FIG. 1, and controls the operations of the tissue extraction process and the volume calculation described above, particularly based on parameters set by the user by the input unit 32. . In addition, the control unit 30 is responsible for controlling data writing to the 3D data memory 16. The input unit 32 is configured by an operation panel having a keyboard, a trackball, and the like. The control unit 30 is configured by a CPU, an operation program, and the like. A single CPU may execute 3D image processing, arbitrary tomographic image formation processing, tissue extraction processing, and volume calculation.

  Next, the target tissue extraction processing in the present embodiment will be specifically described. However, for the configuration (part) already shown in FIG. 1, the reference numerals in FIG. 1 are used in the following description. The ultrasonic diagnostic apparatus in FIG. 1 executes the tracing process described in Patent Document 1. The trace processing is as described in detail in Patent Document 1, and the outline thereof will be described below.

  First, data is collected three-dimensionally using the 3D probe 10 and volume data is constructed in the 3D data memory 16. Then, while displaying an arbitrary tomographic image obtained from the volume data on the display unit 28, the position of the cross section is appropriately adjusted according to a user operation, for example, and the reference cross section is set.

  FIG. 2 is a diagram for explaining setting of a reference cross section for volume data. In this setting, it is desirable to position the reference cross section 46 so that, for example, this cross section is maximized so that the entire target tissue 42 appears as a cross section. However, as will be described later, since a reference cross-section row as a cross-section set is set, it is sufficient that the reference cross-section 46 is set so that such a reference cross-section row covers the entire target tissue 42.

  When the reference cross section 46 is set, a tomographic image corresponding to the reference cross section 46, that is, a tomographic image including a tomographic image of the target tissue 42 is displayed on the display unit 28. Is set by the user. Further, a reference line 54 is set as a straight line connecting these two points. When the reference line 54 is set, a reference section row is set for the volume data 44 corresponding to the three-dimensional space.

  FIG. 3 is a diagram for explaining the setting of the reference section row. The reference cross section row 56 is configured as a plurality of cross sections orthogonal to the reference line (reference numeral 54 in FIG. 2). That is, it corresponds to a plurality of cross-sections arranged at equal intervals or non-uniform intervals from one point used for setting the reference line to the other point. Here, the reference section row 56 includes a plurality of manual tracing reference sections 58 and a plurality of automatic tracing reference sections 60. Here, a predetermined number of manual trace reference cross sections 58 are formed, and the number thereof is n. For example, the value of n is determined within a range of 5 to 10. The reference cross section 58 for manual tracing corresponds to a representative cross section, and manual tracing is performed only on the representative cross section, so that the burden on the user can be greatly reduced. On the other hand, automatic tracing is executed by interpolation processing for each reference section 60 for automatic tracing.

  In manual tracing, a plurality (n) of tomographic images corresponding to a plurality (n) of manual tracing reference sections 58 are displayed on the display unit 28. In this case, the tomographic images may be displayed one by one, or a plurality of tomographic images may be displayed side by side. Then, manual trace processing is executed for each tomographic image. That is, the user forms a trace line corresponding to the contour of the target tissue in each tomographic image using the input unit 32 while observing the image.

  In forming the manual trace line according to the user operation, in the present embodiment, processing for supporting the user is also executed. This user support process will be described in detail later.

  When the manual trace line is formed, automatic correction processing of the manual trace line detailed in Patent Document 1 is executed for each manual trace reference section 58. That is, edge detection processing is performed on the periphery of each point on the manual trace line, and processing for shifting the point to a position on the edge is performed on the point where the edge is detected. However, if no edge is detected, the manual trace result is stored as it is. Thus, when the correction process is executed for each manual trace line, the automatic trace process is executed for the plurality of automatic trace reference sections 60.

  FIG. 4 is a diagram for explaining the automatic trace processing. In the automatic trace processing, a plurality of complex trace lines 68, which are a plurality of manual trace lines after correction processing, formed on a plurality of reference cross sections 58 for manual tracing are used as a reference, and interpolation processing is performed based on them. Thus, the trace surface 70 is configured as a plurality of closed loops connected in a planar shape. In this case, it is not necessary to define a complete three-dimensional curved surface, but an interpolation process is executed so that an interpolation trace line can be defined at least for each automatic tracing reference section 60.

  In addition, for each reference section 60 for automatic tracing, automatic correction processing of the automatic trace line detailed in Patent Document 1 may be executed. That is, edge detection processing is performed on the periphery of each point on the automatic trace line, and processing for shifting the point to a position on the edge is performed on the point where the edge is detected. However, if no edge is detected, the automatic trace result is stored as it is.

  In this way, as shown in FIG. 4, the trace surface 70 enveloping along the form of the target tissue is formed, and the target tissue can be extracted three-dimensionally. Then, the extracted three-dimensional image of the target tissue is displayed, and the volume value of the three-dimensionally extracted target tissue is calculated and the volume value is displayed.

  Next, user assistance processing in the present embodiment will be described. FIG. 5 is a diagram illustrating an internal configuration of the tissue extraction unit. The tissue extraction unit 22 includes a trace cross-section setting unit 222, an auxiliary cross-section setting unit 224, a manual trace auxiliary unit 226, and a trace line forming unit 228 in order to realize the above-described tissue extraction process and user support described in detail below. ing. Regarding the configuration (part) shown in FIG. 5, processing for user support will be described using the reference numerals in FIG. 5. In this process, first, a trace auxiliary section is set.

  FIG. 6 is a view for explaining a trace auxiliary section. 6 shows the target tissue 42 in the volume data (reference numeral 44 in FIG. 2), which is a three-dimensional data space, and a reference cross-section row (reference numeral 56 in FIG. 3) set by the trace cross-section setting unit 222 in the volume data. ), A reference cross section 58 for manual tracing is shown. As described above, the trace line is formed in response to the user operation on the reference cross section 58 for manual tracing.

  The auxiliary trace section 100 is set by the auxiliary cross section setting unit 224 so that the target tissue 42 is included in the cross section and intersects with the reference cross section 58 for manual tracing. Note that the position and inclination of the trace assist cross section 100 may be set according to a user operation. The trace assisting cross section 100 is particularly useful when the outline of the target tissue 42 is unclear in the manual tracing reference cross section 58.

  In FIG. 6, a reference cross-sectional image 58A is a tomographic image corresponding to the reference cross-section 58 for manual tracing, and includes a target tissue tomographic image 42A. The target tissue tomographic image 42 </ b> A corresponds to a crossing portion of the manual tracing reference cross section 58 and the target tissue 42. In the manual trace described above, the user forms a trace line corresponding to the contour of the target tissue while observing the reference cross-sectional image 58A.

  However, in the reference cross-sectional image 58A, the contour of the target tissue, that is, the boundary portion of the target tissue tomographic image 42A is not always clear. For example, there may be a case where the boundary portion of the target tissue tomographic image 42A becomes unclear at a location indicated by a broken line as in a reference cross-sectional image 58A shown in FIG. In this case, it is difficult to specify the contour at the position of the point P from the reference cross-sectional image 58A. Even if it can be specified, there may be a case where an operational burden or a psychological burden is imposed on the user.

  On the other hand, the auxiliary cross-sectional image 100A is a tomographic image corresponding to the trace auxiliary cross-section 100, and includes a target tissue tomographic image 42A. The target tissue tomographic image 42 </ b> A corresponds to an intersecting portion of the trace assist cross section 100 and the target tissue 42.

  The point P in the reference cross-sectional image 58A and the point P in the auxiliary cross-sectional image 100A correspond to the same point in the three-dimensional data space. Even in the same point, the clarity in the image may be different due to the difference in cross section. That is, even if the boundary at the point P is unclear in the reference cross-sectional image 58A, the boundary at the point P may be clear in the auxiliary cross-sectional image 100A. Therefore, the contour information of the target tissue is set using the auxiliary cross-sectional image 100A of the trace auxiliary cross-section 100.

  FIG. 7 is a diagram for explaining setting of contour information using a trace auxiliary section. FIG. 7 shows an auxiliary cross-sectional image 100A obtained from the trace auxiliary cross-section. The user identifies the contour of the target tissue in the auxiliary cross-sectional image 100A by observing the auxiliary cross-sectional image 100A. For example, the user forms the auxiliary trace line 42M along the boundary of the target tissue.

  A plurality of reference section cursors 58C corresponding to a plurality of manual trace reference sections (reference numeral 58 in FIG. 3) are also displayed in the auxiliary section image 100A. That is, each reference cross section cursor 58C corresponds to a line of intersection between the corresponding manual trace reference cross section and the trace auxiliary cross section. Then, outline auxiliary points P (P1, P2) are set as outline information at positions where the respective reference cross-section cursors 58C intersect with the auxiliary trace lines 42M.

  The contour auxiliary point P is contour information obtained from the auxiliary cross-sectional image 100A in which the boundary of the target tissue is relatively clear, and this contour information is reflected in each manual trace reference cross-section. The auxiliary trace line 42M may be omitted, and the contour auxiliary point P may be directly set by the user on each reference section cursor 58C. In order to obtain more contour information, a plurality of trace assist cross sections may be provided.

  FIG. 8 is a diagram for explaining a setting example of a plurality of trace auxiliary cross sections. FIG. 8 shows a target tissue 42 in volume data, which is a three-dimensional data space, and a manual trace reference section 58 set for the target tissue 42. FIG. 8 also shows a reference line 54 set according to the form of the target tissue 42. As described above, the reference section row including the reference section 58 for manual tracing is set to be orthogonal to the reference line 54 (see FIGS. 2 and 3).

  For example, the auxiliary cross section setting unit 224 sets a plurality of trace auxiliary cross sections 100 so as to include the reference line 54. The reference line 54 is set on a reference cross section (reference numeral 46 in FIG. 2) set in the volume data. Therefore, the auxiliary cross section setting unit 224 sets the reference cross section as one trace auxiliary cross section 100A. The reference cross section is a surface positioned by the user so that the entire target tissue 42 appears as a cross section. Therefore, the reference cross section often captures the cross section of the target tissue 42 relatively clearly and is suitable for use as the trace auxiliary cross section 100A. In addition, since the reference cross section is a cross section used by the user to grasp the entire image of the target tissue 42, it is sufficiently assumed that the user grasps the boundary of the target tissue 42 in the reference cross section. It is also convenient for the user to use the cross section again as the trace auxiliary cross section 100A.

  If the reference cross section is the trace auxiliary cross section 100A, the auxiliary cross section setting unit 224 sets an additional trace auxiliary cross section 100B that intersects the trace auxiliary cross section 100A and the reference line 54. In FIG. 8, the trace auxiliary section 100B is set to be orthogonal to the trace auxiliary section 100A. Of course, the trace auxiliary cross section 100B may be set so as to intersect the trace auxiliary cross section 100A at an acute angle. Furthermore, in addition to the trace auxiliary section 100B, another trace auxiliary section 100 (not shown) may be added so as to intersect the trace auxiliary section 100A and the reference line 54. For example, a plurality of trace auxiliary cross sections 100 may be set at intervals of 45 degrees or at intervals of 30 degrees.

  When a plurality of trace auxiliary cross sections 100 are set, as described with reference to FIG. 7, the outline auxiliary point P is set as the outline information for each trace auxiliary cross section 100. In FIG. 8, the contour information set in the trace auxiliary cross section 100A is contour auxiliary points P1 and P2, and the contour information set in the trace auxiliary cross section 100B is contour auxiliary points P3 and P4. Then, the manual trace auxiliary unit 226 reflects the outline auxiliary point P set in each trace auxiliary cross section 100 as the outline information to each manual trace reference cross section.

  FIG. 9 is a diagram for explaining the reflection of the contour information. In FIG. 8, contour auxiliary points P1 and P2 set in the trace auxiliary cross section 100A and contour auxiliary points P3 and P4 set in the trace auxiliary cross section 100B are tomographic images corresponding to the reference cross section 58 for manual tracing. It is displayed in a reference cross-sectional image 58A of FIG.

  In the reference cross-sectional image 58A, the boundary portion of the target tissue tomographic image 42A may be unclear as indicated by a broken line. However, since the contour auxiliary point P obtained by using the trace auxiliary cross section having a relatively clear boundary is reflected in the reference cross sectional image 58A, the user can change the positions of the auxiliary contour points P1, P2, P4, for example. That there is a boundary. Then, the user operates the input unit 32 while referring to the contour auxiliary point P, and the trace line forming unit 228 forms a manual trace line according to the operation. As a result, the user can form a manual trace line depending on the contour auxiliary point P.

  For reference when the user forms a manual trace line, the manual trace auxiliary unit 226 forms a closed curve that passes through a plurality of contour auxiliary points P using a spline interpolation process or the like and displays it as a reference trace line. You may let them. For example, the user manually corrects the reference trace line to form a manual trace line.

  Thus, by using the contour auxiliary point P, the burden on the user's operation surface when forming the manual trace line, the psychological burden associated with doubting whether it is a true boundary, etc. It becomes possible to reduce. Of course, the accuracy and credibility of the formed manual trace line is also improved.

  FIG. 10 is a diagram illustrating another setting example of the trace assist cross section. FIG. 10 shows a setting example of the trace auxiliary section when the Average Rotation method is used as the volume calculation method. In the Average Rotation method, a plurality of manual trace reference cross sections 58 are set so as to cross each other along the axis Ax. Therefore, the trace auxiliary section 100 is set so as to be orthogonal to the axis Ax. Also in this case, a contour auxiliary point is set on the trace auxiliary cross section 100, the contour auxiliary point is reflected in the manual tracing reference cross section 58, and the user refers to the reflected contour auxiliary point for each manual tracing. A manual trace line is formed in the reference cross section 58.

  As mentioned above, although preferred embodiment of this invention was described, embodiment mentioned above is only a mere illustration in all the points, and does not limit the scope of the present invention. The present invention includes various modifications without departing from the essence thereof.

  22 tissue extraction unit, 222 trace cross-section setting unit, 224 auxiliary cross-section setting unit, 226 manual trace auxiliary unit, 228 trace line forming unit.

Claims (7)

In the ultrasonic data processing apparatus for forming a trace line corresponding to the contour of the object based on the ultrasonic data obtained by transmitting and receiving ultrasonic waves to and from the three-dimensional space including the object,
A trace section setting unit for setting a manual trace section in a three-dimensional data space composed of ultrasonic data arranged three-dimensionally;
An auxiliary cross-section setting unit for setting a trace auxiliary cross-section that intersects with the manual trace cross-section in the three-dimensional data space;
A manual trace auxiliary unit for reflecting the contour information obtained based on the trace auxiliary cross section on the manual trace cross section;
A trace line forming unit that forms a trace line in accordance with a user operation in a manual trace section in which the contour information is reflected;
Having
An ultrasonic data processing apparatus. The ultrasonic data processing apparatus according to claim 1,
The manual trace auxiliary section sets the contour location on the line where the manual trace cross section and the trace auxiliary cross section cross each other as the outline information.
An ultrasonic data processing apparatus. The ultrasonic data processing apparatus according to claim 2,
The manual trace auxiliary section has an intersection point of an auxiliary trace line formed in a trace auxiliary cross section and a manual trace cross section as the contour portion.
An ultrasonic data processing apparatus. In the ultrasonic data processing device according to claim 2 or 3,
The manual trace auxiliary unit forms a reference trace line in the manual trace section based on a contour portion set in the manual trace section.
An ultrasonic data processing apparatus. In the ultrasonic data processing device according to any one of claims 1 to 4,
The trace section setting unit sets the manual trace section so as to intersect with a reference axis set according to the form of the object in the three-dimensional data space,
The auxiliary cross-section setting unit sets the trace auxiliary cross-section to include the reference axis;
An ultrasonic data processing apparatus. The ultrasonic data processing apparatus according to claim 5,
In the three-dimensional data space, the reference axis is set in a reference plane selected according to the form of the object,
The auxiliary cross-section setting unit sets the reference plane as the trace auxiliary cross-section.
An ultrasonic data processing apparatus. In the ultrasonic data processing device according to claim 5 or 6,
The auxiliary cross-section setting unit sets an additional trace auxiliary cross-section that intersects the trace auxiliary cross-section at the reference axis.
An ultrasonic data processing apparatus.

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