JP2583081Y2 - Ultrasound diagnostic equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic diagnostic apparatus, and more particularly, to an ultrasonic diagnostic apparatus for receiving a plurality of sound rays simultaneously.

[0002]

2. Description of the Related Art In an ultrasonic diagnostic apparatus, simultaneous dual sound ray reception is performed to improve the quality of a B-mode image and the frame rate in a Doppler mode.

In simultaneous two-ray reception by a conventional ultrasonic diagnostic apparatus, as shown in FIG.
, And received by the #N and # N + 1 sound rays. Further, in the sequence S2, transmission is performed by sound lines # N + 2 and reception is performed by sound lines # N + 2 and # N + 3. In addition,
D indicates a diagnostic site. The correspondence between the sequence #, the transmission sound ray #, and the reception sound ray # is as shown in FIG.

[0004]

In the conventional ultrasonic diagnostic apparatus, two sound rays to be received simultaneously are adjacent to each other.
For example, when there is a noise source F as shown in FIG. 6 (a noise source caused by non-uniformity of a living tissue or the like), noise from the noise source F is included in both received sound rays. For this reason, for example, in a B-mode image, there is a problem that noise caused by the noise source F is displayed as a large dot.

Accordingly, an object of the present invention is to provide an improved ultrasonic diagnostic apparatus so that a plurality of sound rays simultaneously received do not contain the same noise.

[0006]

The ultrasonic diagnostic apparatus according to the present invention is an ultrasonic diagnostic apparatus for simultaneously receiving a plurality of sound rays.
It is characterized by comprising a sound ray control means for selecting a combination of sound rays separated in directions or three directions and selecting a combination including sound rays skipped in the above sequence in another sequence.

[0007]

According to the ultrasonic diagnostic apparatus of the present invention, at least one
Since a plurality of sound rays separated from each other by two or more are simultaneously received, the direction difference between the sound rays becomes large. For this reason, the same noise is less likely to be included in the simultaneously received sound rays. Therefore,
For example, in the B-mode image, the noise caused by the noise source F is prevented from being displayed as a large dot.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiment shown in the drawings. Note that this does not limit the present invention. FIG. 1 is a main block diagram of an ultrasonic diagnostic apparatus according to a first embodiment of the present invention. The ultrasonic diagnostic apparatus 11 includes a probe 12, a transmission unit 13, a reception unit 14, a beam former 15, a DSC 16, a CRT 17, and a sound ray control unit 18.

In the ultrasonic diagnostic apparatus 11, the probe 1
2. A sound ray signal is obtained by the transmission unit 13 and the reception unit 14, and is imaged by the DSC 16 via the beam former 15;
In step 7, for example, image display in the B mode is performed.

The sound ray control unit 18 selects a sound ray to be transmitted and received in accordance with the sequence number as shown in FIG. 2 every time transmission and reception are performed once.

That is, in the sequence S1 corresponding to the first transmission / reception, the # N + 1 sound ray is selected as the transmission sound ray. Also, the #N and # N + 2 sound rays are selected as the reception sound rays. In the sequence S2 corresponding to the second transmission / reception, the sound ray C is # N +
Select the second sound ray. Also, # N + 1,
The sound ray of # N + 3 is selected. The same applies to the third and subsequent transmission and reception. D indicates a diagnostic site. The correspondence between the sequence #, the transmission sound ray #, and the reception sound ray # is as shown in FIG.

In the ultrasonic diagnostic apparatus 11, as shown in FIG. 2, the sound ray # N + 3 includes noise due to the noise source F, but the sound ray # N + 1 includes noise due to the noise source F. Absent. For this reason, for example, in the B-mode image, the noise caused by the noise source F is prevented from being displayed as a large dot. In the Doppler mode image,
Spot noise in the blood flow region caused by the non-uniformity of the living tissue is also reduced. On the other hand, since the total number of sound rays does not decrease, the image quality is improved.

As a second embodiment of the present invention, as shown in FIG. 4, there is provided an apparatus having a sound ray control unit for selecting two sound rays to be simultaneously received so as to be every third sound ray. . That is, in the second embodiment, the sound ray control unit selects # N + 1 sound ray as the transmission sound ray in the sequence S1. In addition, sound lines #N and # N + 3 are selected as reception sound lines. In the sequence S2, the sound ray # N + 2 is selected as the transmission sound ray as indicated by the dotted line of the sound ray C. Also, the sound rays # N + 1 and # N + 4 are selected as the reception sound rays.

The correspondence between sequence #, transmission sound ray #, and reception sound ray # is as shown in FIG. With the ultrasonic diagnostic apparatus of the second embodiment, the same effects as those of the ultrasonic diagnostic apparatus 11 of the first embodiment can be obtained.

[0015]

According to the ultrasonic diagnostic apparatus of the present invention, a plurality of sound rays having a large direction difference are simultaneously received, so that the same noise is hardly included. Thus, the influence of noise is reduced. Further, since the number of sound rays as a whole does not decrease, a good image can be obtained.

[Brief description of the drawings]

FIG. 1 is a main block diagram of an embodiment of the ultrasonic diagnostic apparatus of the present invention.

FIG. 2 is an explanatory diagram of simultaneous dual sound ray reception according to the ultrasonic diagnostic apparatus of FIG. 1;

FIG. 3 is a table regarding simultaneous dual sound ray reception according to the ultrasonic diagnostic apparatus of FIG. 1;

FIG. 4 is an explanatory diagram of simultaneous dual sound ray reception according to another embodiment of the present invention.

FIG. 5 is a table of simultaneous dual sound ray reception according to another embodiment of the present invention.

FIG. 6 is an explanatory diagram of simultaneous dual sound ray reception according to a conventional ultrasonic diagnostic apparatus.

FIG. 7 is a chart of simultaneous dual sound ray reception according to a conventional ultrasonic diagnostic apparatus.

[Explanation of symbols]

 Reference Signs List 11 Ultrasound diagnostic apparatus 12 Probe 13 Transmitter 14 Receiver 18 Sound ray controller F Noise source.

Continuation of front page (56) References JP-A-3-4844 (JP, A) JP-A-59-20154 (JP, A) JP-A-2-200256 (JP, A) JP-A-3-206985 (JP, A) JP-A-3-55046 (JP, A) JP-A-59-120142 (JP, A) JP-A-2-307436 (JP, A) JP-A-3-118709 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) A61B 8/00-8/14

Claims (1)

(57) [Scope of request for utility model registration] And means for transmitting one sound ray having a predetermined sound ray number to form a plurality of effective reception sound rays, wherein two of the plurality of effective reception sound rays are An ultrasonic diagnostic apparatus, wherein a sound ray is received at a transmission position of a sound ray corresponding to a number reduced by one and a number increased by one or two with respect to a predetermined sound ray number.