JP3691825B2 - Ultrasonic diagnostic equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ultrasonic diagnostic apparatus capable of simultaneously displaying an ultrasonic image of a subject and blood flow dynamics.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is an ultrasonic diagnostic apparatus that receives a reflected wave reflected from a biological tissue and irradiates an ultrasonic pulse in the living body to obtain a biological tomographic image. In recent years, in addition to biological tomographic images in the subject, the blood flow dynamics in the subject are observed using the Doppler effect in which the frequency of the reflected wave shifts depending on the motion speed of the moving reflector. Some ultrasonic diagnostic apparatuses are provided with a Doppler function.
[0003]
In such an ultrasonic diagnostic apparatus, an ultrasonic tomographic image (B-mode image) and a blood flow dynamic image (color flow image) in a subject are simultaneously displayed as an ultrasonic image, thereby observing in the subject. It is possible to easily recognize the position of the blood flow dynamics.
[0004]
Here, the color flow image detects the moving direction of dynamics (here, blood flow dynamics) using the Doppler effect when ultrasonic waves are transmitted and received, for example, the dynamics toward the ultrasonic probe. It is generated by coloring the dynamics in red and away from the ultrasound probe in blue. Then, by displaying the color flow image superimposed on the B-mode image, the surgeon can capture the flow velocity corresponding to the blood flow movement in the blood vessel on the B-mode image. In recent years, there is also an expression method called power Doppler that performs coloring according to the intensity of an ultrasonic signal representing dynamics regardless of the moving direction with respect to the ultrasonic probe, and a color generated by this power Doppler method. A technique has also been developed in which an operator recognizes blood flow dynamics by superimposing and displaying a flow image on a B-mode image. In the following, the color flow image is defined in a broad sense including the one based on the power Doppler method.
[0005]
By the way, when extracting a color flow image in an ultrasonic diagnostic apparatus, it is necessary to repeatedly transmit and receive an ultrasonic signal on the same sound ray, and the inside of the subject has the same size as the B-mode scanning region. When scanning, the frame rate becomes slow, and it may be difficult to observe blood flow as a moving body. For this reason, the color flow image is generally displayed only on a specific display area (Doppler ROI) on the B-mode image, and when the surgeon has a blood flow dynamic to be observed, It is necessary to move the display area on the B-mode image. In this case, in order to obtain a color flow image as described above, it is necessary to transmit / receive ultrasonic signals a plurality of times on the same sound ray, and it is difficult to perform such transmission / reception scanning while moving the region of interest. Accordingly, the generation of the color flow image is generally interrupted during the operation of moving the display area.
[0006]
In an ultrasonic diagnostic apparatus, generally, in order to improve the visibility of a full-color image superimposed on a B-mode image, the brightness of these images can be individually adjusted. Generally, in order to observe a color flow image in detail, for example, as disclosed in Patent Document 1, when displaying a color flow image and a B mode image at the same time, the B mode image is displayed with a reduced luminance value. Is done. Further, Patent Document 1 discloses a contrast adjusting means for returning the luminance dynamic range adjusted narrower than the original data even on the monitor.
[0007]
On the other hand, for example, Patent Document 2 discloses a technique for improving the visibility by converting the luminance of the color flow image with reference to the luminance value of the B-mode image.
[0008]
[Patent Document 1]
Japanese Examined Patent Publication No. 8-27609 [0009]
[Patent Document 2]
Japanese Examined Patent Publication No. 8-27608 [0010]
[Problems to be solved by the invention]
However, when the brightness value of the B-mode image is lowered for the purpose of improving the visibility of the color flow image as in the technique disclosed in Patent Document 1 described above, the B-mode image displayed while the display area is moving Is extremely low, and it may be difficult for the operator to position the display region of the color flow image in an appropriate region of interest. To cope with this, it may be possible to improve the visibility of the B-mode image when moving the display area by operating the contrast adjustment means before moving the area of interest. Requesting this causes complication of operation.
[0011]
On the other hand, even when the brightness value of the B-mode image is not adjusted as in the technique disclosed in Patent Document 2 described above, the brightness of the region of interest on the B-mode image is extremely low compared to the surroundings. In some cases, it is difficult to position the display region of the color flow image in an appropriate region of interest.
[0012]
The present invention has been made in view of the above circumstances, and an object thereof is to provide an ultrasonic diagnostic apparatus excellent in operability and visibility when a color flow image display area is moved on a B-mode image.
[0013]
[Means for Solving the Problems]
In order to solve the above problems, an ultrasonic diagnostic apparatus according to claim 1 of the present invention is an ultrasonic diagnostic apparatus that transmits and receives ultrasonic waves to a subject and displays a tomographic image and blood flow dynamics of the subject. A display region setting means for setting the display region of the blood flow dynamics at a desired position on the tomographic image, and at the time of movement of the display region set by the display region setting means, the display region in the display region on the tomographic image Luminance adjusting means for adjusting and enhancing the luminance level relative to the luminance level outside the display area, average luminance value calculating means for calculating an average luminance value of the entire tomographic image, and a tomography in the display area An intra-region average luminance value calculating means for calculating an average luminance value of the image, and an average intra-region luminance value when the average luminance value of the whole tomographic image calculated by the average luminance value calculating means is lower than a set luminance range. Calculated by calculation means The luminance value of the tomographic image in the display area is corrected so that the average luminance value to be obtained is half the maximum output luminance value that can be displayed on the display unit that displays the tomographic image and blood flow dynamics of the subject. When the average luminance value of the entire tomographic image is higher than the set luminance range, the luminance value of the entire tomographic image is decreased and the luminance value is increased by adding the luminance value to the tomographic image in the display area. Brightness value correcting means for correcting the brightness as described above, and the brightness adjusting means performs brightness adjustment based on the correction by the brightness value correcting means .
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. The drawings relate to the first embodiment of the present invention, FIG. 1 is a functional block diagram showing a schematic configuration of an ultrasonic diagnostic apparatus, FIG. 2 is a functional block diagram of an image processing unit, and FIG. It is explanatory drawing which shows a mode image.
[0017]
In FIG. 1, reference numeral 100 denotes an ultrasonic diagnostic apparatus capable of simultaneously displaying a tomographic image (B-mode image) and blood flow dynamics (color flow image) in a subject as an ultrasonic image. The ultrasonic probe 1, the transmission unit 2, the reception unit 3, the B-mode synthesis unit 4, the Doppler processing unit 5, the image processing unit 6, the controller 7, the display unit 8, and the operation unit 9. Configured.
[0018]
The ultrasonic probe 1 transmits an ultrasonic pulse into the subject based on the ultrasonic transmission signal input from the transmission unit 1, and receives an ultrasonic echo reflected in the subject to generate an electrical signal. The converted electrical signal is output to the receiver 3.
[0019]
The transmission unit 2 sequentially generates an ultrasonic transmission signal in a predetermined direction based on a timing signal or the like input from the controller 7 and outputs the generated ultrasonic transmission signal to the ultrasonic probe 1. Here, the transmission unit 2 appropriately generates, for example, an ultrasonic transmission signal for B mode or an ultrasonic transmission signal for Doppler (for color flow) in accordance with an instruction from the controller 7.
[0020]
The reception unit 3 forms a reception signal along a sound ray in a predetermined direction based on the electrical signal input from the ultrasonic probe 1 and outputs the formed reception signal to the B-mode synthesis unit 4 or the Doppler processing unit 5 To do. In this case, when the reception signal formed by the receiving unit 3 is based on the B-mode ultrasonic pulse, it is output to the B-mode synthesis unit 4 and based on the Doppler ultrasonic pulse. Is output to the Doppler processing unit 5.
[0021]
The B-mode synthesis unit 4 envelope-detects the reception signal input from the reception unit 3 to generate a signal (A scope signal) representing the echo intensity at each reflection point on the sound ray. B-mode data having the instantaneous amplitude as the respective luminance value is formed.
[0022]
On the other hand, the Doppler processing unit 5 performs quadrature detection on the received signal input from the receiving unit 3 and extracts a Doppler signal having a shift frequency component. Then, after the Doppler signal is digitally converted, the Doppler processing unit 5 obtains a Doppler signal obtained by extracting only a high-frequency component (blood flow component) by performing an MTI filter (moving target indication filter) process. Further, the Doppler processing unit 5 frequency-analyzes the Doppler signal including only the blood flow component to obtain a deviation frequency due to blood cells, and reflects the blood flow velocity and its dispersion and mainly the blood flow based on the deviation frequency. The color power data (Doppler data) of the blood flow image is formed by calculating the power of each sample point.
[0023]
The image processing unit 6 stores the B-mode data input from the B-mode synthesis unit 4 and the Doppler data input from the Doppler processing unit 5, and appropriately stores each stored data in accordance with a control signal from the controller 7. Read and construct image data for each frame. Then, the image processing unit 6 refers to a look-up table or the like, converts the constructed image data into a color signal such as RGB, performs D / A conversion, and then outputs it to the display unit 8. As a result, the display unit 8 displays an ultrasonic image such as a monochrome B-mode image or a color flow image using the B-mode image as a background image.
[0024]
The controller 7 comprehensively controls the above-described units. Based on various instructions from the operator through the operation unit 9 and preset stored information, etc., transmission / reception of ultrasonic waves, display, various calculations, etc. Manage and change the process.
[0025]
Here, the operation unit 9 is configured to have a cursor key, a trackball, and the like (not shown) so that the operator can set and move a color flow image display area (hereinafter also referred to as a Doppler ROI). It has become. That is, the controller 7 and the operation unit 9 have a function as display area setting means. Then, the controller 7 detects a color flow image moving operation based on, for example, an operation of a trackball or the like by an operator, and interrupts the generation of color flow data and detects image processing while detecting the color flow image moving operation. A Doppler ROI movement process is performed through the unit 6. That is, the controller 7 has a function as a region movement detection unit.
[0026]
Next, a detailed configuration of the image processing unit 6 will be described with reference to FIG.
As shown in FIG. 2, the image processing unit 6 includes a Doppler data memory 10, a B-mode data memory 11, a display region image enhancement processing unit 12, a display region memory 13, a luminance level improvement value memory 14, and a read-out. A control unit 15 and an image mixing unit 16 are included.
[0027]
The Doppler data memory 10 temporarily stores the Doppler data generated by the Doppler processing unit 5. The Doppler data stored in the Doppler data memory 10 is appropriately read based on an instruction from the controller 7 through the read control unit 15, and the read Doppler data is sent to the image mixing unit 16. It is output.
[0028]
The B mode data memory 11 temporarily stores the B mode data generated by the B mode synthesis unit 4. The B-mode data stored in the B-mode data memory 11 is appropriately read based on an instruction from the controller 7 through the read control unit 15, and the read B-mode data is displayed area image enhancement. The data is output to the processing unit 12.
[0029]
The display area image enhancement processing unit 12 has a function as a luminance adjustment unit, and performs predetermined luminance adjustment on the B mode data read from the B mode data memory 11 as necessary. The B-mode data is output to the image mixing unit 16. For example, the display area image enhancement processing unit 12 displays the display area when the operator moves the Doppler ROI when selecting a display mode in which a color flow image is superimposed and displayed with the B mode image as a background image. The current Doppler ROI information is read from the memory 13, the luminance level improvement value α is read from the luminance level improvement value memory 14, and the luminance level improvement value α is added to each luminance value in the Doppler ROI on the B mode data. . Then, the B mode data in which the luminance values in the Doppler ROI are added in this way is output to the image mixing unit 16.
[0030]
The display area memory 13 has a function as a display area storage unit, and stores display area information (that is, Doppler ROI information) of a color flow image superimposed and displayed on a B-mode image. The Doppler ROI specified by the Doppler ROI information can be moved as appropriate according to the operation of the operator through the operation unit 9, and the display area memory 13 stores the Doppler ROI stored when the Doppler ROI is moved. Update information sequentially.
[0031]
The luminance level improvement value memory 14 has a function as a luminance level storage means, and stores a luminance level improvement value α (luminance level information). The brightness level improvement value α can be appropriately changed according to the operation of the operator through the operation unit 9, and the brightness level improvement value memory 14 is stored at the time of changing the brightness level improvement value α. The brightness level improvement value α is sequentially updated.
[0032]
The image mixing unit 16 constructs image data for each frame based on Doppler data input from the Doppler data memory 10 or B mode data input from the B mode data memory 11 through the display area image enhancement processing unit 12. Then, the constructed image data is converted into color signals such as RGB, and this is D / A converted and output to the display unit 8.
[0033]
In the ultrasonic diagnostic apparatus 100 having the above-described configuration, the controller 7 moves the Doppler ROI based on the operation of the operation unit 9 by the operator when selecting a display mode in which the color flow image is superimposed on the Doppler ROI on the B-mode image. When the operation is detected, the controller 7 controls the transmission unit 2 and the like to interrupt the generation of the Doppler ultrasonic transmission signal and the like.
[0034]
At that time, the controller 7 sequentially updates the Doppler ROI information in the display area memory 13 according to the operation state of the operation unit 9 by the surgeon, and sequentially updates the luminance level improvement value α in the luminance level improvement value memory 14. Update.
[0035]
Further, the controller 7 prohibits the reading of the Doppler data from the Doppler data memory 10 by the control through the reading control unit 15 of the image processing unit 6 and performs only the reading control of the B mode data from the B mode data memory 11. . Further, the controller 7 controls the reading of the Doppler ROI information and the luminance level improvement value α from the display area memory 13 and the luminance level improvement value memory 14.
[0036]
When the B-mode data read from the B-mode data memory 11 is input to the display area image enhancement processing unit 12, the display area image enhancement processing unit 12 applies to each luminance value in the Doppler ROI on the B mode data. The brightness level improvement value α is added. Then, the B-mode data whose brightness has been adjusted by the display area image enhancement processing unit 12 is output to the image mixing unit 16 and displayed on the monitor through the display unit 8.
[0037]
As a result, as shown in FIG. 3, the surgeon can perform a movement operation of the Doppler ROI while observing a B-mode image in which the luminance value in the Doppler ROI is emphasized by α as compared with the surroundings.
[0038]
That is, when the Doppler ROI is emphasized more than the surroundings, the operator can set the Doppler ROI at a desired position while confirming the region of interest on the B-mode image with good visibility.
[0039]
Next, FIGS. 4 to 6 relate to the second embodiment of the present invention, FIG. 4 is a functional block diagram of the image processing unit, and FIGS. 5 and 6 are explanatory diagrams showing B-mode images when the display area is moved. is there. In the present embodiment, the configuration of the image processing unit 6 is mainly different from that of the first embodiment described above. In addition, about the same structure, a same sign is attached | subjected and description is abbreviate | omitted.
[0040]
As shown in FIG. 4, the image processing unit 6 includes the above-described Doppler data memory 10, B-mode data memory 11, display region image enhancement processing unit 12, display region memory 13, brightness level improvement value memory 14, and read control unit 15. In addition to the image mixing unit 16, the Doppler ROI average luminance value calculating unit 17, a B-mode overall average luminance value calculating unit 18, a luminance value correcting unit 19, and a luminance value memory 20 are configured. ing.
[0041]
The Doppler ROI average luminance value calculation unit 17 calculates the average luminance value in the Doppler ROI based on the B mode data read from the B mode data memory 11 and the Doppler ROI information read from the display area memory 13. To do. The calculated average luminance value in the Doppler ROI is output to the luminance value correction unit 19.
[0042]
The B mode overall average brightness value calculation unit 18 calculates the average brightness value of the entire B mode data based on the B mode data read from the B mode data memory 11. The calculated average luminance value of the entire B mode data is output to the luminance value correction unit 19.
[0043]
The luminance value correcting unit 19 has a function as a luminance value correcting unit, and the average luminance value of the entire B mode data calculated by the B mode overall average luminance value calculating unit 18 is at a luminance level outside the set luminance range β. At this time, a correction value for correcting the average luminance value of the entire B mode data or the B mode data in the Doppler ROI to a predetermined luminance level is set.
[0044]
Here, the set luminance range β is, for example, as shown in FIGS. 5A and 6A, a half value of the maximum output luminance value (Max) that can be displayed on the display unit 8 (average output luminance value Ave). Is set to a predetermined luminance range centered on. Then, when the average brightness value of the entire B mode data falls outside the set brightness range β on the low value side, the brightness value correction unit 19 corrects the average brightness value of the entire B mode data to the average output brightness value Ave, for example. Set a correction value. In addition, the luminance value correction unit 19 performs, for example, the B mode data in the Doppler ROI corrected by the display area image enhancement processing unit 12 when the average luminance value of the entire B mode data is outside the set luminance range β on the high value side. Is set to a correction value for correcting the average luminance value to the average output luminance value Ave.
[0045]
The luminance value memory 20 has a function as a luminance value storage unit, and is calculated by the average luminance value information in the Doppler ROI calculated by the Doppler ROI average luminance value calculating unit 17 and calculated by the B mode overall average luminance value calculating unit 18. The average brightness value information of the entire B mode data is stored as appropriate.
[0046]
In the ultrasonic diagnostic apparatus 100 having the above-described configuration, the controller 7 moves the Doppler ROI based on the operation of the operation unit 9 by the operator when selecting a display mode in which the color flow image is superimposed on the Doppler ROI on the B-mode image. When the operation is detected, the controller 7 controls the transmission unit 2 and the like to interrupt the generation of the Doppler ultrasonic transmission signal and the like.
[0047]
At that time, the controller 7 sequentially updates the Doppler ROI information in the display area memory 13 according to the operation state of the operation unit 9 by the surgeon, and sequentially updates the luminance level improvement value α in the luminance level improvement value memory 14. Update.
[0048]
Further, the controller 7 prohibits the reading of the Doppler data from the Doppler data memory 10 by the control through the reading control unit 15 of the image processing unit 6 and performs only the reading control of the B mode data from the B mode data memory 11. . Further, the controller 7 controls the reading of the Doppler ROI information and the luminance level improvement value α from the display area memory 13 and the luminance level improvement value memory 14.
[0049]
When the B mode data is read from the B mode data memory 11, the Doppler ROI average luminance value calculation unit 17 calculates the average luminance value of the B mode data in the Doppler ROI and the B mode overall average luminance value calculation unit. At 18, the average luminance value of the entire B mode data is calculated.
[0050]
Further, when the average luminance value of the B-mode data in the Doppler ROI and the average luminance value of the entire B-mode data are calculated, the luminance value correcting unit 19 needs to calculate the average luminance value of the entire B-mode data. Accordingly, a correction value for the entire B mode data or the B mode data in the Doppler ROI is set. The average luminance value of the B mode data in the Doppler ROI and the average luminance value of the entire B mode data calculated by the calculation units 17 and 18 are stored in the luminance value memory 20.
[0051]
Then, when a correction value is set by the luminance value correction unit 19, the display area image enhancement processing unit 12 performs luminance adjustment in consideration of the set value.
Specifically, for example, when the average brightness value of the entire B mode data is on the low value side and outside the set brightness range β (see FIG. 5A), the brightness value correction unit 19 performs B mode data in the Doppler ROI. A correction value for is set. Then, the display area image enhancement processing unit 12 performs luminance adjustment based on the correction value so that the average luminance value in the Doppler ROI becomes the average output luminance value Ave (see FIG. 5B).
[0052]
For example, when the average luminance value of the entire B mode data is outside the set luminance range β on the high value side (see FIG. 6A), the luminance value correction unit 19 sets a correction value for the entire B mode data. . Then, the display area image enhancement processing unit 12 performs luminance adjustment based on the correction value so that the average luminance value of the entire B mode data becomes the average output luminance value Ave, and the Doppler in the B mode data whose luminance has been adjusted. The brightness level improvement value α is added to each brightness value in the ROI (see FIG. 6B).
[0053]
According to such an embodiment, in addition to the effect obtained in the first embodiment described above, the B mode image in the Doppler ROI can be enhanced with an appropriate luminance level.
[0054]
That is, when the B-mode data has low overall brightness, and it is predicted that the B-mode image in the Doppler ROI is not clearly displayed even when the brightness level improvement value α is added, the Doppler ROI By adjusting the luminance so that the average luminance value in the image becomes the average output luminance value Ave, the B-mode image in the Doppler ROI can be enhanced with an appropriate luminance level.
[0055]
On the other hand, when the brightness of the B-mode data is high overall and the B-mode image in the Doppler ROI when the brightness level improvement value α is added is predicted to exceed the maximum output brightness value Max, the B-mode data Adjust the overall brightness to the low brightness side, and add the brightness level improvement value α to each brightness value in the Doppler ROI in the brightness-adjusted B-mode data to make the B-mode image in the Doppler ROI appropriate it can be emphasized in a bright levels.
[0056]
In each of the above-described embodiments, when selecting a display mode in which a color flow image is superimposed and displayed on a Doppler ROI on a B-mode image, the luminance value is multiplied by a predetermined gain constant. Of course, the present invention can also be applied to an ultrasonic diagnostic apparatus that performs a process of reducing the overall amount by a predetermined amount.
[0057]
(Additional item 1)
In an ultrasonic diagnostic apparatus that transmits and receives ultrasonic waves to a subject and displays a tomographic image and blood flow dynamics of the subject,
Display region setting means for setting the display region of the blood flow dynamics at a desired position on the tomographic image;
Area movement detecting means for detecting movement of the display area by the display area setting means;
Ultrasound comprising: luminance adjusting means for adjusting a luminance level in at least the display area and enhancing a tomographic image in the display area when the movement of the display area is detected by the area movement detecting means. Diagnostic device.
[0058]
(Appendix 2)
The ultrasonic diagnostic apparatus according to claim 1, further comprising display area storage means for storing display area information set by the display area setting means.
[0059]
(Additional Item 3)
Average luminance value calculating means for calculating an average luminance value of the entire tomographic image;
In-region average luminance value calculating means for calculating an average luminance value of the tomographic image in the display region;
A correction value for correcting the average luminance value of the entire tomographic image or the average luminance value of the tomographic image in the display region to a predetermined luminance level when the average luminance value of the entire tomographic image is at a luminance level outside a setting range. Brightness value correction means for setting
The ultrasonic diagnostic apparatus according to claim 1 or 2, wherein the luminance adjustment unit performs correction based on the correction value when adjusting the luminance level in the display area.
[0060]
(Appendix 4)
A luminance value storage that stores the average luminance value of the entire tomographic image calculated by the average luminance value calculating unit and the average luminance value of the tomographic image in the display area calculated by the intra-region average luminance value calculating unit. Item 4. The ultrasonic diagnostic apparatus according to Item 3, further comprising means.
[0061]
【The invention's effect】
As described above, according to the present invention, it is possible to improve operability and visibility when moving a blood flow dynamic display region on a tomographic image.
[Brief description of the drawings]
FIG. 1 is a functional block diagram showing a schematic configuration of an ultrasonic diagnostic apparatus according to a first embodiment of the present invention. FIG. 2 is a functional block diagram of an image processing unit. FIG. FIG. 4 is a functional block diagram of an image processing unit according to the second embodiment of the present invention. FIG. 5 is an explanatory diagram showing a B-mode image when the display area is moved. FIG. 6 is an explanatory diagram showing a B-mode image when the display area is moved.
7 ... Controller (display area setting means)
9 ... Operation section (display area setting means)
12: Display area image enhancement processing unit 13: Display area memory (display area storage means)
14 ... Brightness level improvement value memory (brightness level storage means)
17 ... Doppler ROI average luminance value calculation unit (intra-region average luminance value calculation means)
18 ... B-mode overall average brightness value calculation unit (average brightness value calculation means)
19 ... Luminance value correction unit (luminance value correction means)
100 ... Ultrasonic diagnostic equipment

Claims (2)

In an ultrasonic diagnostic apparatus that transmits and receives ultrasonic waves to a subject and displays a tomographic image and blood flow dynamics of the subject,
Display area setting means for setting the display area of the blood flow dynamics at a desired position on the tomographic image;
Luminance adjusting means for adjusting and enhancing the luminance level in the display area on the tomographic image relative to the luminance level outside the display area when moving the display area set by the display area setting means When,
Average luminance value calculating means for calculating an average luminance value of the entire tomographic image;
In-region average luminance value calculating means for calculating an average luminance value of the tomographic image in the display region;
When the average luminance value of the whole tomographic image calculated by the average luminance value calculating unit is lower than a set luminance range, the average luminance value calculated by the intra-region average luminance value calculating unit is the tomographic image of the subject. The luminance value of the tomographic image in the display area is corrected so that it becomes a half value of the maximum output luminance value that can be displayed on the display unit that displays the blood flow and blood flow dynamics, and the average luminance value of the entire tomographic image is the set luminance A brightness value correcting means for reducing the brightness value of the entire tomographic image when it is higher than the range and correcting the brightness value to be increased by adding the brightness value to the tomographic image in the display area;
With
The ultrasonic diagnostic apparatus , wherein the luminance adjustment unit performs luminance adjustment based on correction by the luminance value correction unit . The ultrasonic diagnostic apparatus according to claim 1, further comprising a luminance level storage unit that stores level information of luminance values added by the luminance value correction unit .

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