JP2932002B2 - Ultrasound Doppler diagnostic device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an ultrasonic Doppler diagnostic apparatus, and more particularly, to a C image such as MTI filtering for a freeze image or the like.
The present invention relates to an ultrasonic Doppler diagnostic apparatus whose FM processing is changed.

(Prior Art) FIG. 2 shows an example of a conventional ultrasonic Doppler diagnostic apparatus.

The transmitting / receiving unit 2 transmits and receives an ultrasonic wave to the ultrasonic probe 1, and outputs the received signal to the B-mode processing unit 3 and the phase detection unit 6. The B-mode processing unit 3 performs a B (Brightness) mode process on the input received signal, and converts the processed data into a B (Digital Scan Converter) 4
Output to mode data memory 5. The DSC 4 processes the input data and converts B-mode image information, speed information, dispersion information, power information, and the like from the CFM processing unit 8 described later into RGB (R
ed Green Blue) signal to the display unit 15. On the other hand, the phase detector 6 performs orthogonal detection on the input received signal,
The n-component signal and the cos-component signal (bipolar video signals I and Q) are output to the two AD converters 7, respectively. The two A / D converters 7 receiving the bipolar video signals I and Q perform A / D conversion, respectively, and
Output to MTI (Moving Target Indication) filter 9. The fixed signal in the signal (data) input by the MTI filter 9 is removed, and the filtered signal is output to the phase difference detection unit 10, and the phase difference detection unit 10 detects the phase difference between the two input signals. I do. Phase difference detector
The output of 10 is input to a speed calculation unit 11, a variance calculation unit 12, and a power calculation unit 13, and a speed calculation, a variance calculation, and a power calculation are respectively performed. Output to the speed / dispersion / power data memory 16. By the way, MTI filter 9,
The part composed of the phase difference detection unit 10, the speed calculation unit 11, the dispersion calculation unit 12, and the power calculation unit 13 is a CFM (Color Flow Map
ing) The processing unit 8.

In the above-described configuration, at the time of Doppler diagnosis, a signal received by the ultrasonic probe 1 is output as a reception signal from the transmission / reception unit 2, and one of the signals is transmitted as a B-mode image through a path via the B-mode processing unit 3. It is displayed on the display unit 15. Another one is
The information is displayed on the display unit 15 as speed information, dispersion information, power information, and the like through a path via the phase detection unit 6.

(Problems to be Solved by the Invention) However, conventionally, since means for storing Doppler information such as speed, dispersion, and power are provided after the CFM processing unit, speed display, dispersion display, Although it was possible to change the power display, there was a problem that the change was not effective for processing such as MTI filtering which greatly affected the image quality and diagnosis of CFM images.

Therefore, an object of the present invention is to apply to a frozen image and the like.
It is an object of the present invention to provide an ultrasonic Doppler diagnostic apparatus capable of changing CFM processing such as MTI filtering.

(Means for Solving the Problems) An ultrasonic Doppler diagnostic apparatus of the present invention comprises a phase detecting means and a CF.
The present invention is characterized in that a means for storing a bipolar video signal is provided between the image processing apparatus and the M processing means.

(Operation) In the ultrasonic Doppler diagnostic apparatus of the present invention, since the bipolar video signal is stored before the CFM processing means, the CFM processing such as the MTI filtering is changed even for a freeze image or the like.

(Example) Hereinafter, the present invention will be described in more detail with reference to an example shown in FIG. Note that the present invention is not limited by this.

FIG. 1 is a configuration diagram showing an ultrasonic Doppler diagnostic apparatus according to one embodiment of the present invention. The feature of this ultrasonic Doppler diagnostic apparatus is that a memory 14 is added to the configuration of the conventional ultrasonic Doppler diagnostic apparatus shown in FIG.
Has been deleted. Note that the reference numerals in FIG. 1 are used in the same meaning as in FIG. Memory 14 has two AD converters 7 and MTI
Connected to the filter 9 and the AD-converted data is stored in the memory 14 when the diagnostic image is frozen. Also, DS
The speed / dispersion / power data memory 16 is deleted from C4 as described above.

The operation of the above configuration will be described. Ultrasonic probe 1
Are output as received signals from the transmission / reception unit 2, and one of them is passed as a B-mode data through a path via the B-mode processing unit 3 as a B-mode data memory 5 in DSC 4.
Which is the same as the conventional example. The other is stored in the DSC 4 as speed information, dispersion information, power information, and the like through a path from the phase detection unit 6 to the CFM processing unit 8. When the operator performs a freeze operation on the diagnostic image, the bipolar video signals output from the phase detector 6 are input to two AD converters 7 respectively, and the AD converted data is stored in the memory 14. And the operator
Data is read from the memory 14 according to an operation such as an MTI filtering process, the data is subjected to a CFM process in a CFM processing unit 8 starting from an MTI filter, and the processed data is input to a DSC 4. The DSC 4 processes the input data and outputs B-mode image information, speed information, dispersion information, power information, and the like to the display unit 15 as RGB (Red Green Blue) signals. Since the bipolar video signal is stored before the CFM processing unit 8, the stored data can be repeatedly read and CFM processing such as MTI filtering can be continued.

Next, another embodiment of the present invention will be described. A feature of another embodiment is that the capacity of the memory 14 is further increased to store a bipolar video signal corresponding to a plurality of frames before the freeze. In this configuration, even when the operator designates any one of a plurality of frames, the bipolar video signal corresponding to the designated frame is read out, and the CF of the embodiment is read.
M processing can be performed. That is, CFM processing such as MTI filtering can be performed on a cine image.

(Effects of the Invention) According to the ultrasonic Doppler diagnostic apparatus of the present invention, since the bipolar video signal is stored before the CFM processing means, MTI filtering, gain adjustment,
CFM processing such as smoothing and threshold processing, which greatly affects the image quality and diagnosis of CFM images, can be changed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an ultrasonic Doppler diagnostic apparatus according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional ultrasonic Doppler diagnostic apparatus. 4 DSC, 6 Phase detector, 7 AD converter, 8
... CFM processing unit, 9 ... MTI filter, 14 ... memory.

Claims (1)

(57) [Claims] 1. An ultrasonic Doppler diagnostic apparatus comprising: a phase detector for outputting a bipolar signal; and a color flow mapping processor, wherein a freeze operation of an image is performed between the phase detector and the color flow mapping processor. An ultrasonic Doppler diagnostic apparatus comprising means for storing the bipolar signal according to the following.