Ultrasonic diagnostic apparatus, ultrasonic diagnostic method, and control processing program for ultrasonic diagnostic apparatus

Abstract

The invention provides an ultrasonic diagnostic equipment, an ultrasonic diagnostic method and a control process of the ultrasonic diagnostic equipment. A multi-thresholding unit performs a multi-thresholding on the volume data of the blood flow speed on the basis of a reference value related to the blood flow speed. A surface extraction unit extracts a surface of the blood flow on the basis of the multi-threshold volume data. A weighting unit performs a weighting used for calculating the position of the center of gravity for the blood flow region formed by the blood flow surface. A center of gravity position calculation unit calculates a position of the center of gravity of the blood flow region the Doppler sample marker position setting unit sets the position of the Doppler sample marker to the position of the center of gravity for the blood flow region. A Doppler sample marker movement control unit controls movement of the Doppler sample marker on the basis of the Doppler sample marker position setting data. The invention makes a sample marker of a spectrum Doppler method to follow three-dimensional movement of a desired blood vessel accurately and easily.

Description

technical field [0001] The present invention relates to an ultrasonic diagnostic device, an ultrasonic diagnostic method, and a control processing program for the ultrasonic diagnostic device, and in particular to an ultrasonic diagnostic device, an ultrasonic diagnostic method, and an ultrasonic diagnostic device capable of tracking the sampling marks of spectral Doppler in cooperation with the movement of blood vessels Control handler. Background technique [0002] In recent years, an ultrasonic diagnostic device capable of displaying tomographic images (B-mode tomographic images) and blood flow information in real time has been proposed by using both the ultrasonic Doppler method and the ultrasonic pulse-echo method. [0003] The ultrasound Doppler method used together with the ultrasound pulse-echo method can be broadly classified into the spectral Doppler method which displays the temporal change of the Doppler frequency corresponding to the velocity of the blood flow, ...

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Problems solved by technology

[0011] However, in the ultrasonic diagnostic apparatuses proposed in JP-A-6-217975 and JP-A-2003-523250, automatic tracking of a plurality of ultrasonic vibrators arranged in a one-dimensional array in a two-dimensional tomographic plane is used. Although it is possible to track the movement of blood vessels in the two-dimensional slice, since the blood vessels in the subject move three-dimensionally in the depth direction of the slice, there is a possibility that the blood vessel you want to observe moves in the depth direction relative to the slice. In the case of movement, it is difficult to track the sampling mark in conjunction with the movement of the blood vessel

[0012] In particular, in the case of performing a diagnosis after administering a drug to a subject, since the blood vessels in the subject move three-dimensionally and more than usual, including the depth direction of the tomographic plane, the movement of the blood vessel desired to be observed Coordinated to make sampling flags more difficult to track

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