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Method for deciding opening of ultrasonographic device

A technology of ultrasonic diagnosis and aperture, which is applied in the directions of acoustic wave diagnosis, infrasonic wave diagnosis, ultrasonic/sonic wave/infrasonic wave diagnosis, etc., and can solve problems such as large physical quantities

Inactive Publication Date: 2006-03-22
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to equip the same number of A / D converters as the number of transducers used simultaneously and a beamformer for receiving the output from the A / D converters and delaying and summing the outputs, which leads to many problems. large physical quantity

Method used

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  • Method for deciding opening of ultrasonographic device
  • Method for deciding opening of ultrasonographic device
  • Method for deciding opening of ultrasonographic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] figure 1 is a flowchart showing a procedure of determining the manner of adding and thinning received signals from a plurality of transducers in the method of determining the aperture of the ultrasonic diagnostic apparatus according to the first embodiment of the present invention.

[0028] figure 1 , in the parameter input step (S101), data of the manner of adding and thinning the received signals from the transducers, the shape of the detector including the interval size data between the transducers, etc. are input as parameters. Then, in the beam pattern simulation step (S102), beamforming simulation is performed based on the parameters input in the parameter input step (S101). For example, the beam pattern simulation step (S102) is performed in the following manner. The distance from each transducer to the measurement point in the ultrasonically irradiated medium is calculated, this distance is converted to time, and the difference between this converted time an...

Embodiment 2

[0033] figure 2 is a flowchart showing a procedure of determining the manner of adding and thinning received signals from a plurality of transducers in a method of determining an aperture of an ultrasonic diagnostic apparatus according to a second embodiment of the present invention.

[0034] figure 2 In the fixed parameter setting step (S201), the fixed parameters are set, for example, the arrangement mode of the transducer, the transmission frequency value corresponding to the center frequency of the transducer and the transmitted pulse waveform, the diameter of the aperture, and the input The number of inputs to the beamformer. Then, in the beam pattern forming step (S202), a temporary addition and thinning pattern is formed and output for the first time, and a beam pattern is obtained in the beam forming simulation step (S102). In the addition and thinning pattern determination step (S103), the obtained beam pattern is checked against the standard, and a judgment resul...

Embodiment 3

[0038] 3 is a flowchart showing a process of determining a manner of adding and thinning received signals from a plurality of transducers in a method for determining an aperture of an ultrasonic diagnostic apparatus according to a third embodiment of the present invention

[0039] Among Fig. 3, fixed parameter is set in the fixed parameter setting step (S201), for example, the arrangement pattern of transducer, the transmission frequency value corresponding to the center frequency of transducer and emission pulse waveform, the diameter of aperture, and The number of inputs to the beamformer. Then, in the first beam pattern forming step (S202), a temporary addition and thinning pattern is formed and output for the first time, and the first variable parameter is set and output in the first variable parameter setting step (S301) , in a first beamforming simulation step (S102), a beam pattern is obtained based on the temporary addition and thinning pattern and first variable param...

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Abstract

There is provided a method for determining an aperture of an ultrasonic diagnostic apparatus that prevents a beam pattern from being deteriorated and allows an image with excellent quality to be obtained. The method includes: a beam formation simulation step (S102) of performing a simulation of an ultrasonic beam pattern to be formed, based on a parameter concerning a signal processing condition of a probe including a manner of adding and thinning received signals from transducers; and an addition and thinning pattern determination step (S103) of determining whether or not the beam pattern obtained in the beam formation simulation step satisfies a predetermined criterion including a maximum value of a sidelobe level, an allowable amount of reduction in sensitivity in the case where no addition and thinning is performed, and the like.

Description

technical field [0001] The present invention relates to an ultrasonic diagnostic apparatus for observing and diagnosing conditions of living bodies and the like by transmitting and receiving ultrasonic waves using a transducer array, and more particularly, the present invention relates to a method of optimally determining the aperture of the ultrasonic diagnostic apparatus. Background technique [0002] At present, it is a well-known focusing technology to combine multiple ultrasonic beams by using multiple transducers to form a transducer array simultaneously. [0003] 4 is a block diagram of an exemplary structure of a linear scan type ultrasonic diagnostic apparatus according to a first conventional example. In Fig. 4, the detector 1 includes an array of transducers 2-1 to 2-128. Among the transducers 2-1 to 2-128, the transducer (also referred to as an aperture portion) to be applied is selected by the high voltage resistant switches 3-1 to 3-64. The pulses generated b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00G01S7/52G10K11/34
CPCG01S7/52052G10K11/34G01S7/52046
Inventor 西垣森绪
Owner PANASONIC CORP