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Color doppler ultrasonic diagnosis apparatus

A color Doppler and diagnostic device technology, applied in the field of color Doppler ultrasonic diagnostic devices, can solve the problem of not mentioning separation of clutter components and the like, and achieve the effect of suppressing clutter components

Active Publication Date: 2013-12-25
TOSHIBA MEDICAL SYST CORP
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  • Abstract
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Problems solved by technology

However, there is no mention of the separation of clutter components from bloodstream components

Method used

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  • Color doppler ultrasonic diagnosis apparatus

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no. 2 approach

[0064] The structure of this embodiment is the same as that of the first embodiment. Figure 7 The procedure of the two-dimensional filtering process of this embodiment is shown. It is the same as the first embodiment until the inverse transform (S1 to S4) of the second orthogonal transform is performed.

[0065] After performing the inverse transform of the second orthogonal transform, the inverse transform of the first orthogonal transform is not performed. Keeping the state on the first frequency axis, velocity, variance, and power are estimated for each frequency component (S21, S22, S23). Velocity, variance, and power are parameters on the Doppler frequency axis, so they can be estimated by the same processing as in the first embodiment.

[0066] Here, the first orthogonal transform is made into a discrete Fourier transform. In addition, the second orthogonal transform method is not limited, and any orthogonal transform method may be used. When the Fourier frequency o...

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Abstract

According to one embodiment, a color Doppler ultrasonic diagnosis apparatus includes an ultrasonic probe, a transmission / reception unit, a quadrature phase detection unit configured to perform quadrature phase detection of an output from the transmission / reception unit, a filter unit configured to perform first orthogonal transformation for an output from the quadrature phase detection unit in a depth direction, perform second orthogonal transformation for a result obtained by the first orthogonal transformation in an ensemble direction, apply a two-dimensional filter to obtained frequency data to extract a blood flow component from the frequency data, and sequentially perform inverse transformation of the second orthogonal transformation and inverse transformation of the first orthogonal transformation for an output from the two-dimensional filter, and a blood flow component information calculation unit configured to calculate blood flow component information based on an output from the filter unit.

Description

[0001] This application is based on Patent Application No. 2009-289634 filed in Japan on December 21, 2009, claims the priority of this earlier application, and incorporates the entire content into this application. technical field [0002] The invention relates to a color Doppler ultrasonic diagnostic device. Background technique [0003] In the color Doppler method in ultrasonic diagnosis, the biological body is irradiated with ultrasonic waves multiple times in the same direction, and blood flow component information is extracted by shifting frequencies based on the Doppler effect. Blood flow component information includes blood flow velocity, power and variance. For example, if Figure 11 As shown, ultrasonic waves are irradiated N times in the same direction (same grating) at a period of 1 / PRF (PRF: repetition frequency). A data sequence in which N echo components corresponding to the same depth are arranged along the time axis in the same direction is called an ensemb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B8/06
CPCA61B8/488A61B8/13A61B8/06A61B8/5238A61B8/0891A61B8/08
Inventor 佐藤武史
Owner TOSHIBA MEDICAL SYST CORP
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