Inhibition method for complete type-B ultrasonic instrument supersonic wave aberration based on transmission iterative method

An all-digital, iterative method technology, applied in the field of suppression of ultrasonic abnormalities of all-digital B-ultrasound instruments, can solve the problems of difficult to obtain reliable image diagnosis, achieve the effect of reducing and suppressing ultrasonic abnormalities and facilitating modeling
CN101313858BInactive Publication Date: 2010-06-02ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2010-06-02
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides an inhibition method based on a transmission iterative method for the ultrasonic aberration of an all-digital B-ultrasonic scanner. The method comprises the following steps that: (1) an ultrasonic transducer probe of the B-ultrasonic scanner transmits an original signal; (2) the probe receives a feedback signal and transmits the feedback signal to a microprocessor; (3) the microprocessor carries out iterative treatment of the feedback signal; (4) the probe transmits the signal which has undergone the iterative treatment again; (5) the probe receives the feedback signal again; (6) the step (3) is returned to, and the steps from (3) to (6) are repeated for a plurality of times; (7) an image is displayed. The inhibition method based on the transmission iterative algorithm for the ultrasonic aberration of the all-digital B-ultrasonic scanner uses filter estimation to correct a transmitting sound beam, and an obtained sound beam brings about the acoustic back scattering which is more suitable for estimating the arrival time and amplitude of the signal. Therefore, the modeling of the transducer becomes more convenient and is finally applied to the all-digital B-ultrasonic scanner for reducing and inhibiting the ultrasonic aberration.
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Description

technical field

[0001] The invention belongs to the technical field of all-digital B-ultrasound instruments, and in particular relates to a method for suppressing the abnormality of ultrasonic waves of all-digital B-ultrasound instruments based on a transmission iteration method. Background technique

[0002] Aberrations in medical ultrasound imaging are usually modeled by the arrival time and amplitude fluctuations of the transducer array signal, which is an approximation of the physical aberration process and can correct the transmitted signal by using delay and amplitude filters, But it is very difficult to measure this kind of filter when it is seriously abnormal.

[0003] In medical ultrasound imaging, the nonlinear characteristics of ultrasonic waves propagating in biological tissues are usually used, which also brings noise. The main source of noise in ultrasonic images is the aberration and multiple reflections between the transducer and biological tissues, both of w...

Claims

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