JP2003038491A - Ultrasonic imaging method and ultrasonic diagnostic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To largely display a CFM image by BCFM-based intermittent scan. SOLUTION: In a region-of-interest part ROI, a composiled image of a B-mode image B and a CFM image F or the CFM image F is displayed at a low frame rate. In a first scan size part except the region-of-interest part ROI, the B-mode image B is freeze-displayed. In a second scan size part, a monitor image Mi is displayed at a high frame rate. Such a single image form leads to an enlargement of image size, which facilitates the observation. Particularly, the CFM image F can be easily observed. The naturalness of the connection between the monitor image Mi of high frame rate and the B-mode image B of freeze display is observed, thereby it is easily judged whether a scanning section can be kept or not.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an ultrasonic imaging method and an ultrasonic diagnostic apparatus, and more specifically,
The present invention relates to an ultrasonic imaging method and an ultrasonic diagnostic apparatus improved so as to display a CFM (Color Flow Mapping) image by intermittent scanning of a BCFM (B mode-Color Flow Mapping) system.

[0002]

2. Description of the Related Art FIG. 17 is an exemplary view showing a display screen of an image by a BCFM system intermittent scan in a conventional ultrasonic diagnostic apparatus. On the left half of the display screen H, the monitor image M
i is displayed. A B-mode image B is displayed on the right half of the display screen H, and a CFM image F is displayed on the ROI (a part on the screen corresponding to the ROI provided in the imaging region) ROI. It is displayed overlapping B.

FIG. 18 is an explanatory diagram of a conventional ultrasonic imaging method. The CFM image F is obtained using a weak sound pressure monitor image capturing process in which monitor images M1 to M8 are captured using a weak sound pressure at which the contrast agent (air bubbles) hardly disappears and a strong sound pressure at which the contrast agent almost disappears. And a high-sound-pressure B-mode image capturing process in which the B-mode image B is captured using a strong sound pressure at which the contrast agent almost disappears. There is.

FIG. 19 is a view showing an example of the monitor image Mi. Since the monitor image Mi has a high frame rate, it has a high real-time property. However, the image quality is not good because the image is taken with a weak sound pressure.

FIG. 20 is a view showing an example of the CFM image F.
The CFM image F is taken in a state in which the contrast agent is sufficiently infiltrated. Since the frame rate is low, the real-time property is low.

FIG. 21 is a view showing an example of the B-mode image B. The B-mode image B is not so good in image quality because it is captured immediately after the contrast agent has considerably disappeared during the high-sound pressure CFM image capturing process. However, the image quality is slightly better than the image quality of the monitor image because the image is captured with a strong sound pressure. Since the frame rate is low, the real-time property is low.

[0007]

In the conventional ultrasonic diagnostic apparatus, as shown in FIG. 17, the monitor image Mi is displayed on the left half of the display screen H, and the CFM image F + B mode image B is displayed on the right side of the display screen H. It is displayed in half. However, this reduces the image size and makes it difficult to observe.
In particular, there is a problem that it is difficult to observe the CFM image F displayed only in the region of interest ROI. Therefore, an object of the present invention is to provide an ultrasonic imaging method and an ultrasonic diagnostic apparatus which are improved so that a CFM image by BCFM system intermittent scanning can be displayed larger than before.

[0008]

According to a first aspect of the present invention, when a region of interest is provided in an imaging region formed by a large number of sound rays, the present invention is formed by the sound rays passing through the region of interest. For the first scanning region, a flow image is captured at a low frame rate using a strong sound pressure at which the contrast agent almost disappears. For the first scanning region, a B-mode image is set to 1
Only a single image is photographed, a monitor image is photographed at a high frame rate for the second scanning region formed by the sound rays that do not pass through the region of interest, and the region of interest on the screen includes the flow image and the B-mode image. The composite image or the flow image is displayed at a low frame rate, the B-mode image is displayed in the first scanning region portion excluding the region of interest of the screen, and the monitor image is high in the second scanning region portion of the screen. There is provided an ultrasonic imaging method characterized by displaying at a frame rate. In the ultrasonic imaging method according to the first aspect, instead of displaying two monitor images and CFM images + B-mode images side by side on the screen, a region of interest (a part on the screen corresponding to the region of interest in the imaging region) is displayed. ) Displays the CFM image + B mode image at a low frame rate, and the first scanning area portion (the portion on the screen corresponding to the first scanning area formed by the sound ray passing through the region of interest in the shooting region) is displayed. , B-mode images are freeze-displayed, and a monitor image is displayed at a high frame rate in the second scanning area portion (the portion on the screen corresponding to the second scanning area formed by the sound rays that do not pass through the region of interest in the imaging region). Is displayed. This allows for single image format (Single Image Forma
t), the image size becomes large and it becomes easy to observe. In particular, it becomes easy to observe the CFM image. In addition,
Although the monitor image of the entire imaging region cannot be seen, the function for maintaining the scanning section can be achieved even with a partial monitor image, and it is considered that no problem will occur.

According to a second aspect of the present invention, when a region of interest is provided in a photographing region formed by a large number of sound rays, the first scanning region formed by the sound rays passing through the region of interest is provided. A flow image and a B-mode image are subsequently captured at a low frame rate using a strong sound pressure at which the contrast agent almost disappears, and a high frame is obtained for the second scanning region formed by the sound ray that does not pass through the region of interest. A monitor image is captured at a rate, a composite image of the flow image and the B-mode image or the flow image is displayed in a region of interest on the screen at a low frame rate, and a first scanning region excluding the region of interest on the screen The B-mode image is displayed at a low frame rate in a portion, and the monitor image is displayed at a high frame rate in the second scanning area portion of the screen. To provide the imaging method. In the ultrasonic imaging method according to the second aspect, the monitor image and the CFM image + B mode image are not displayed side by side on the screen, but the region of interest includes the CFM image +
The B-mode image is displayed at a low frame rate, the B-mode image is displayed at a low frame rate in the first scanning area portion, and the monitor image is displayed at a high frame rate in the second scanning area portion. As a result, a single image format is used, so that the image size becomes large and it becomes easy to observe.
In particular, it becomes easy to observe the CFM image. Although the monitor image of the entire imaging region cannot be seen, the function for maintaining the scanning cross section can be achieved even with a partial monitor image, and it is considered that no problem occurs.

According to a third aspect of the present invention, in the ultrasonic imaging method of the above construction, the monitor image is picked up using a medium sound pressure at which the contrast agent disappears by about half. Provide a way. In the ultrasonic imaging method according to the third aspect, about half the contrast agent disappears in the second scanning region, but
Since the contrast agent does not disappear in the scanning region, it is considered that there are many cases in which the CFM image is not obstructed. Further, since the medium sound pressure is used, the image quality of the monitor image is better than that of the weak sound pressure.

According to a fourth aspect of the present invention, in the ultrasonic imaging method of the above construction, a monitor image is photographed using a strong sound pressure at which the contrast agent almost disappears. I will provide a. In the ultrasonic imaging method according to the fourth aspect described above, the contrast agent almost disappears in the second scanning region, but the contrast agent does not disappear in the first scanning region, so that there may be no problem in capturing the CFM image. Considered to be many. Since the strong sound pressure is used, the image quality of the monitor image is better than that of the weak sound pressure.

[0012] In a fifth aspect, the present invention provides an ultrasonic imaging method of the above construction, characterized in that a monitor image is photographed using a weak sound pressure at which the contrast agent hardly disappears. provide. In the ultrasonic imaging method according to the fifth aspect, the image quality of the monitor image is not good because a weak sound pressure is used, but the contrast agent does not almost disappear even in the second scanning region.
There is no problem in taking M images.

According to a sixth aspect of the present invention, in the ultrasonic imaging method having the above-mentioned structure, the MC is set in the second scanning area.
Provided is an ultrasonic imaging method characterized in that, when an FM cursor is provided, an MCFM timeline display corresponding to the MCFM cursor is performed. In the ultrasonic imaging method according to the sixth aspect, it is possible to evaluate the presence / absence of infiltration of the contrast agent from the second scanning area to the first scanning area by observing the MCFM timeline display.

According to a seventh aspect, the present invention is based on an ultrasonic probe, ultrasonic scanning means for scanning the inside of a subject using the ultrasonic probe, and data obtained by the scanning. An ultrasonic diagnostic apparatus comprising an ultrasonic image generating means for generating an ultrasonic image and an ultrasonic image display means for displaying an ultrasonic image, wherein the ultrasonic scanning means is formed by a large number of sound rays. When a region of interest is provided in the imaging region, the first scan region formed by the sound ray passing through the region of interest uses a strong sound pressure at which the contrast agent almost disappears and a flow image at a low frame rate. , A single B-mode image is captured for the first scanning region, and a monitor image is captured at a high frame rate for the second scanning region formed by sound rays that do not pass through the region of interest. Ultrasonic image display The stage displays a composite image of the flow image and the B-mode image or the flow image in a region of interest on the screen at a low frame rate, and displays the B image in the first scanning region portion excluding the region of interest of the screen. There is provided an ultrasonic diagnostic apparatus characterized by displaying a mode image and displaying the monitor image at a high frame rate in a second scanning area portion of the screen. The ultrasonic diagnostic apparatus according to the seventh aspect can suitably implement the ultrasonic imaging method according to the first aspect.

In an eighth aspect, the present invention is based on an ultrasonic probe, ultrasonic scanning means for scanning the inside of a subject using the ultrasonic probe, and data obtained by the scanning. An ultrasonic diagnostic apparatus comprising an ultrasonic image generating means for generating an ultrasonic image and an ultrasonic image display means for displaying an ultrasonic image, wherein the ultrasonic scanning means is formed by a large number of sound rays. When a region of interest is provided in the imaging region, the first scan region formed by the sound ray passing through the region of interest uses a strong sound pressure at which the contrast agent almost disappears and a flow image at a low frame rate. And a B-mode image are subsequently taken, and a monitor image is taken at a high frame rate for the second scanning region formed by the sound ray that does not pass through the region of interest. In the area part A composite image of the flow image and the B-mode image or the flow image is displayed at a low frame rate, and the B-mode image is displayed at a low frame rate in the first scanning area portion excluding the ROI portion of the screen. An ultrasonic diagnostic apparatus is characterized in that the monitor image is displayed at a high frame rate in the second scanning area portion of the. In the ultrasonic diagnostic apparatus according to the eighth aspect,
The ultrasonic imaging method according to the second aspect can be suitably implemented.

In a ninth aspect, the present invention is an ultrasonic diagnostic apparatus characterized in that, in the ultrasonic diagnostic apparatus having the above-mentioned structure, a monitor image is photographed using a medium sound pressure at which the contrast agent disappears by about half. Provide a device. The ultrasonic diagnostic apparatus according to the ninth aspect can suitably implement the ultrasonic imaging method according to the third aspect.

According to a tenth aspect of the present invention, in the ultrasonic diagnostic apparatus of the above construction, the monitor image is photographed by using a strong sound pressure at which the contrast agent almost disappears. I will provide a. The ultrasonic diagnostic apparatus according to the tenth aspect can suitably implement the ultrasonic imaging method according to the fourth aspect.

In an eleventh aspect, the present invention provides an ultrasonic diagnostic apparatus having the above-mentioned structure, characterized in that a monitor image is photographed using a weak sound pressure at which the contrast agent hardly disappears. provide. The ultrasonic diagnostic apparatus according to the eleventh aspect can suitably implement the ultrasonic imaging method according to the fifth aspect.

According to a twelfth aspect of the present invention, in the ultrasonic diagnostic apparatus having the above structure, when an MCFM cursor is provided in the second scanning area, an MCFM time line display corresponding to the MCFM cursor is performed. There is provided an ultrasonic diagnostic apparatus including line display means. The ultrasonic diagnostic apparatus according to the twelfth aspect can suitably implement the ultrasonic imaging method according to the sixth aspect.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail below with reference to the embodiments shown in the drawings. The present invention is not limited to this.

First Embodiment FIG. 1 is a block diagram showing an ultrasonic diagnostic apparatus according to the first embodiment of the present invention. This ultrasonic diagnostic apparatus 100 is
An ultrasonic probe 1, a transmission / reception unit 2 that transmits an ultrasonic wave by the ultrasonic probe 1, receives an echo corresponding thereto, and outputs a reception signal, and B that generates B-mode image information from the reception signal. Mode processing unit 3 and CFM from the received signal
A CFM processing unit 4 for generating image information, and a monitor image generating unit 5 for generating a monitor image from the B-mode image information.
A B-mode image generator 6 for generating a B-mode image from the B-mode image information; and a CF from the CFM image information.
A CFM image generation unit 7 that generates an M image, and a display control unit 9 that controls the display of a combined image obtained by combining the monitor image, the B-mode image, and the CFM image on the screen of the display device 10.
A display device 10 for displaying images and messages, and a scan controller 11 for controlling the overall operation.

FIG. 2 shows B in the ultrasonic diagnostic apparatus 100.
It is an illustration figure which shows the display screen H of the image by a CFM system intermittent scan. The image has a sector shape corresponding to a shooting area formed by many sound rays. Also, the image is
The region of interest portion ROI is divided into a first scanning region portion and a second scanning region portion. In the region of interest part ROI,
B-mode image B and CFM image F composite image or CFM
The image F is displayed at a low frame rate. The B-mode image B is freeze-displayed in the first scanning area portion excluding the ROI portion ROI. The monitor image Mi is displayed at a high frame rate in the second scanning area portion.

FIG. 3 is an explanatory diagram of the ultrasonic imaging method according to the first embodiment. First, the B-mode image B is photographed by scanning only the first scanning region using a strong sound pressure at which the contrast agent almost disappears. After that, the medium sound pressure monitor image capturing process of scanning only the second scanning region and capturing the monitor images M1 to M8 using the medium sound pressure at which the contrast agent disappears about half, and the contrast agent disappears almost at all. The imaging cycle consisting of a strong sound pressure CFM image shooting process of scanning only the first scanning region using the strong sound pressure of No. 2 and shooting the CFM image F is repeated.

FIG. 4 is a view showing an example of the B-mode image B.
The B-mode image B is generated only once. The B-mode image B is better than the image quality of the monitor image because the B-mode image B is captured with a strong sound pressure. Since it is a freeze display, there is no real-time property.

FIG. 5 is a view showing an example of the monitor image Mi.
Since the monitor image Mi has a high frame rate, it has a high real-time property. Since the image is captured using the medium sound pressure, the image quality is better than the conventional monitor image captured using the low sound pressure.

FIG. 6 is an exemplary view of the CFM image F. C
The FM image F is displayed alone or in combination with the B-mode image B so that only the region of interest ROI is displayed. CFM image F
Is imaged with the contrast agent fully infiltrated. Since the frame rate is low, the real-time property is low.

7 to 8 are explanatory views showing a preparatory operation for carrying out the ultrasonic imaging method. Figure 7
As shown in, the scanning area is scanned at a low sound pressure, and the monitor image Mi is displayed at a high frame rate. The operator operates a trackball or the like to draw a region of interest portion ROI in the monitor image Mi as shown in FIG. As a result, FIG.
As shown in FIG. 3, in the imaging region S, a region of interest R, a first scanning region A1 formed by a sound ray passing through the region of interest R, and
A second scanning area A2 formed by a sound ray that does not pass through the region of interest R is set.

According to the above first embodiment, the following effects can be obtained. (1) Since the image format is a single image format, the image size is large and it is easy to observe. In particular, it becomes easy to observe the CFM image F. (2) The monitor image Mi is not the entire imaging region but a part thereof, but the function for maintaining the scanning section can be sufficiently achieved. Rather, the connection between the high-frame-rate monitor image Mi and the freeze-display B-mode image B becomes natural when the scanning section can be maintained, and becomes unnatural when the scanning section cannot be maintained. It will be easier to determine whether or not it is maintained. (3) Since the second scanning region is scanned with medium sound pressure, about half of the contrast agent in the second scanning region disappears, but since it is outside the region of interest, it often happens that there is no problem in capturing the CFM image. Conceivable.

Second Embodiment FIG. 10 is an explanatory diagram of an ultrasonic imaging method according to the second embodiment. First, the B-mode image B is photographed by scanning only the first scanning region using a strong sound pressure at which the contrast agent almost disappears. After that, a strong sound pressure monitor image capturing process of scanning only the second scanning region and capturing the monitor images M1 to M8 using a strong sound pressure at which the contrast agent almost disappears, and the contrast agent almost disappears. An imaging cycle consisting of a strong sound pressure CFM image capturing process of scanning only the first scanning region using the strong sound pressure and capturing the CFM image F is repeated.

According to the second embodiment, since the second scanning area is scanned with a strong sound pressure, the image quality of the monitor image Mi is better than when scanning with a medium sound pressure. Most of the contrast agent in the second scanning region disappears, but since it is outside the region of interest, C
It is considered that there may be no problem in capturing the FM image.

-Third Embodiment- FIG. 11 is an explanatory diagram of an ultrasonic imaging method according to the third embodiment. First, the B-mode image B is photographed by scanning only the first scanning region using a strong sound pressure at which the contrast agent almost disappears. After that, a weak sound pressure monitor image capturing process of scanning only the second scanning region and capturing the monitor images M1 to M8 using a weak sound pressure at which the contrast agent hardly disappears, and a strong sound at which the contrast agent almost disappears. The imaging cycle consisting of a strong sound pressure CFM image capturing process of scanning only the first scanning region using pressure to capture the CFM image F is repeated.

According to the third embodiment described above, the contrast medium in the second scanning region hardly disappears, so that there is no problem in taking a CFM image.

-Fourth Embodiment- FIG. 12 is an explanatory view of an ultrasonic imaging method according to the fourth embodiment. Medium sound pressure monitor image capturing process in which only the second scan region is scanned using medium sound pressure at which the contrast agent disappears about half, and a strong sound at which contrast agent almost disappears. A strong sound pressure CFM that scans only the first scanning region using pressure to capture a CFM image F
An imaging cycle including an image capturing process and a high sound pressure B-mode image capturing process in which only the first scanning region is scanned by using a strong sound pressure at which the contrast agent almost disappears and a B-mode image B is captured is repeated. .

According to the fourth embodiment, the B-mode image B is updated and displayed at the low frame rate. Even in this case, the connection between the high frame rate monitor image Mi and the low frame rate B-mode image B becomes natural if the scanning section can be maintained, and becomes unnatural if the scanning section cannot be maintained. It becomes easy to determine whether or not the scanning section can be maintained.

-Fifth Embodiment- FIG. 13 is an explanatory view of an ultrasonic imaging method according to the fifth embodiment. Only the second scanning region is scanned by using a strong sound pressure such that the contrast agent almost disappears, and the monitor image M
1 to M8, a strong sound pressure monitor image shooting process, and a strong sound pressure CFM image shooting process in which only the first scanning region is scanned using a strong sound pressure at which the contrast agent almost disappears. Then, the photographing cycle consisting of a strong sound pressure B-mode image photographing process in which only the first scanning region is scanned by using the strong sound pressure at which the contrast agent almost disappears and the B-mode image B is photographed is repeated.

According to the fifth embodiment described above, the image quality of the monitor image Mi is better than that in the case of scanning with medium sound pressure. Although the contrast agent in the second scanning region almost disappears, it is considered that there is a case in which there is no problem in capturing the CFM image because it is outside the region of interest.

-Sixth Embodiment- FIG. 14 is an explanatory view of an ultrasonic imaging method according to the sixth embodiment. Using a weak sound pressure monitor image capturing process of scanning only the second scanning region and capturing the monitor images M1 to M8 using a weak sound pressure at which the contrast agent hardly disappears, and a strong sound pressure at which the contrast agent almost disappears. Sound pressure CFM for scanning CFM image F by scanning only the first scanning area
An imaging cycle including an image capturing process and a high sound pressure B-mode image capturing process in which only the first scanning region is scanned by using a strong sound pressure at which the contrast agent almost disappears and a B-mode image B is captured is repeated. .

According to the sixth embodiment, since the contrast medium in the second scanning area hardly disappears, there is no problem in taking a CFM image.

-Seventh Embodiment-As shown in FIG. 15, MCFM (M mode-Color Flow
(Mapping) When the cursor K is set in one sound ray direction in the second scan area portion, MCFM scanning is performed only on the MCFM cursor K, and the MCFM timeline display T is displayed on the screen. Since the MCFM timeline display T is used only for determining whether or not the contrast agent has entered, the size may be small.

FIG. 16 is an explanatory diagram of an ultrasonic imaging method according to the seventh embodiment. Basically, it is the same as the first embodiment (which may be any of the second to sixth embodiments), but immediately after the monitor images M1 to M8 are photographed, the MCFM cursor K MCFM
Scanning is performed.

According to the seventh embodiment, the presence / absence of invasion of the contrast agent can be accurately determined by the MCFM timeline display T.

[0042]

According to the ultrasonic imaging method and ultrasonic diagnostic apparatus of the present invention, the image size is large and the observation is easy because the single image format is used. In particular, it becomes easy to observe the CFM image F. Further, it is possible to determine whether or not the scanning section can be maintained by observing the naturalness of the connection between the monitor image and the B-mode image. Further, by displaying the timeline for MCFM, it is possible to accurately determine whether or not the contrast agent has entered.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an ultrasonic diagnostic apparatus according to a first embodiment.

FIG. 2 is a view showing an example of a display screen according to the first embodiment.

FIG. 3 is an explanatory diagram showing an ultrasonic imaging method according to the first embodiment.

FIG. 4 is an explanatory diagram of a B-mode image according to the first embodiment.

FIG. 5 is an explanatory diagram of a monitor image according to the first embodiment.

FIG. 6 is an explanatory diagram of a CFM image according to the first embodiment.

FIG. 7 is a view showing an example of a region-of-interest setting screen according to the first embodiment.

FIG. 8 is another exemplary diagram of a region of interest setting screen according to the first embodiment.

FIG. 9 is an imaging region, a region of interest according to the first embodiment,
It is explanatory drawing of a 1st scanning area and a 2nd scanning area.

FIG. 10 is an explanatory diagram showing an ultrasonic imaging method according to a second embodiment.

FIG. 11 is an explanatory diagram showing an ultrasonic imaging method according to a third embodiment.

FIG. 12 is an explanatory diagram showing an ultrasonic imaging method according to a fourth embodiment.

FIG. 13 is an explanatory diagram showing an ultrasonic imaging method according to a fifth embodiment.

FIG. 14 is an explanatory diagram showing an ultrasonic imaging method according to a sixth embodiment.

FIG. 15 is a view showing an example of a display screen according to the seventh embodiment.

FIG. 16 is an explanatory diagram showing an ultrasonic imaging method according to a seventh embodiment.

FIG. 17 is a view showing an example of a conventional display screen.

FIG. 18 is an explanatory diagram showing a conventional ultrasonic imaging method.

FIG. 19 is an explanatory diagram of a conventional monitor image.

FIG. 20 is an explanatory diagram of a conventional CFM image.

FIG. 21 is an explanatory diagram of a conventional B-mode image.

[Explanation of symbols]

1 Ultrasonic probe 2 transceiver 3 B-mode processing unit 4 CFM processing unit 5 Monitor image generator 6 B-mode image generator 7 CFM image generator 9 Display control unit 10 Display 11 Scan control unit 100 ultrasonic diagnostic equipment

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoichi Suzuki             127, 4-7 Asahigaoka, Hino City, Tokyo             GE Yokogawa Medical System Co., Ltd.             Within F-term (reference) 4C301 AA01 CC02 DD01 DD02 EE07                       EE11 HH02 HH11 JC14 KK02                       KK22 KK27 KK30

Claims (12)

[Claims] 1. When a region of interest is provided in an imaging region formed by a large number of sound rays, the contrast agent almost disappears in the first scanning region formed by the sound rays passing through the region of interest. A flow image is captured at a low frame rate using strong sound pressure, only one B-mode image is captured for the first scanning region, and a second scanning region formed by a sound ray that does not pass through the region of interest is captured. Captures a monitor image at a high frame rate, displays a composite image of the flow image and the B-mode image or the flow image at a low frame rate in a region of interest on the screen, and removes a region of interest on the screen. Ultrasonic imaging, characterized in that the B-mode image is displayed in one scanning area portion, and the monitor image is displayed at a high frame rate in the second scanning area portion of the screen. Method. 2. When a region of interest is provided in an imaging region formed by a large number of sound rays, the contrast agent almost disappears in the first scanning region formed by the sound rays passing through the region of interest. The flow image and the B-mode image are subsequently photographed at a low frame rate using strong sound pressure, and the monitor image is photographed at a high frame rate for the second scanning region formed by the sound ray that does not pass through the region of interest. A composite image of the flow image and the B-mode image or the flow image is displayed in a region of interest on the screen at a low frame rate, and the B-mode image is displayed in the first scanning region portion excluding the region of interest on the screen. An ultrasonic imaging method characterized by displaying at a low frame rate and displaying the monitor image at a high frame rate in a second scanning area portion of the screen. 3. The ultrasonic imaging method according to claim 1 or 2, wherein a monitor image is captured using a medium sound pressure at which about half the contrast agent disappears. . 4. The ultrasonic imaging method according to claim 1 or 2, wherein the monitor image is captured using a strong sound pressure at which the contrast agent almost disappears. 5. The ultrasonic imaging method according to claim 1 or 2, wherein the monitor image is captured using a weak sound pressure at which the contrast agent hardly disappears. 6. The ultrasonic imaging method according to claim 1, wherein when an MCFM cursor is provided in the second scanning area, an MCFM timeline display corresponding to the MCFM cursor is performed. An ultrasonic imaging method characterized by the above. 7. An ultrasonic probe, ultrasonic scanning means for scanning the inside of a subject using the ultrasonic probe, and ultrasonic waves for generating an ultrasonic image based on the data obtained by the scanning. An ultrasonic diagnostic apparatus comprising an image generating unit and an ultrasonic image displaying unit for displaying an ultrasonic image, wherein the ultrasonic scanning unit has a region of interest in an imaging region formed by a large number of sound rays. When provided, a flow image is captured at a low frame rate using a strong sound pressure at which the contrast agent almost disappears in the first scanning region formed by the sound ray passing through the region of interest, and the first scanning is performed. For the area, only one B-mode image is photographed, for the second scanning area formed by the sound ray that does not pass through the region of interest, a monitor image is photographed at a high frame rate, and the ultrasonic image display means displays a screen image. Area of interest on A composite image of the flow image and the B-mode image or the flow image is displayed at a low frame rate, and the B-mode image is displayed in the first scanning area portion excluding the ROI portion of the screen. An ultrasonic diagnostic apparatus characterized in that the monitor image is displayed at a high frame rate in the second scanning area portion. 8. An ultrasonic probe, ultrasonic scanning means for scanning the inside of a subject using the ultrasonic probe, and ultrasonic waves for generating an ultrasonic image based on the data obtained by the scanning. An ultrasonic diagnostic apparatus comprising an image generating unit and an ultrasonic image displaying unit for displaying an ultrasonic image, wherein the ultrasonic scanning unit has a region of interest in an imaging region formed by a large number of sound rays. When provided, a flow image and a B-mode image are continuously captured at a low frame rate by using a strong sound pressure at which the contrast agent almost disappears in the first scanning region formed by the sound ray passing through the region of interest. Then
A monitor image is captured at a high frame rate for the second scanning region formed by the sound ray that does not pass through the region of interest, and the ultrasonic image display means displays the flow image and the B image in the region of interest on the screen. A composite image of the mode images or the flow image is displayed at a low frame rate, and the B-mode image is displayed at a low frame rate in the first scanning area portion excluding the ROI portion of the screen, and the second scanning area portion of the screen is displayed. The ultrasonic diagnostic apparatus is characterized in that the monitor image is displayed at a high frame rate. 9. The ultrasonic diagnostic apparatus according to claim 7 or 8, wherein the monitor image is captured using a medium sound pressure at which about half the contrast agent disappears. . 10. The ultrasonic diagnostic apparatus according to claim 7 or 8, wherein the monitor image is captured using a strong sound pressure at which the contrast agent almost disappears. 11. The ultrasonic diagnostic apparatus according to claim 7 or 8, wherein the monitor image is photographed using a weak sound pressure at which the contrast agent hardly disappears. 12. The ultrasonic diagnostic apparatus according to any one of claims 7 to 11, wherein the MC is provided in the second scanning region.
An ultrasonic diagnostic apparatus comprising: an MCFM timeline display means for displaying an MCFM timeline corresponding to the MCFM cursor when the FM cursor is provided.