Focus information determination method and device, and environmental sound velocity acquisition method and device

一种环境声速、确定方法的技术，应用在测量装置、发声器械、声波诊断等方向，能够解决环境声速不一样、画质恶化等问题

Inactive Publication Date: 2012-12-19
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the sound velocity in the environment of the subject is not uniform and differs depending on the tissue. If the assumed sound velocity is different from the ambient sound velocity, there will be a problem of image quality deterioration.

Method used

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  • Focus information determination method and device, and environmental sound velocity acquisition method and device
  • Focus information determination method and device, and environmental sound velocity acquisition method and device
  • Focus information determination method and device, and environmental sound velocity acquisition method and device

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Embodiment Construction

[0050] Hereinafter, an embodiment of the ultrasonic diagnostic apparatus of the present invention will be described in detail with reference to the drawings.

[0051] figure 1 It is a block diagram showing a schematic configuration of the ultrasonic diagnostic apparatus according to the present embodiment.

[0052] Such as figure 1 As shown, the ultrasonic diagnostic apparatus 1 of this embodiment includes: an ultrasonic probe 10, a reception signal processing unit 12, a transmission control unit 14, a scan control unit 16, a reception control unit 18, an image generation unit 20, a focus information determination unit 22, an environment The speed of sound acquisition unit 24 , the display image generation unit 26 , the monitor 28 and the input unit 30 .

[0053] The ultrasonic probe 10 transmits ultrasonic waves to a diagnosis site in the subject's body, and receives ultrasonic waves reflected from the body. The ultrasonic probe 10 of the present embodiment includes a pl...

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Abstract

The disclosed invention accurately acquires environmental sound velocity without bringing about a drop in processing or diagnostic efficiency. Each element of an ultrasonic probe is driven on the basis of a prescribed transmission delay time, and ultrasonic wave transmission is carried out, the focus of which is focused at a prescribed transmission focus point. An actual focus point or an effective region including said focus point is determined according to the ultrasonic transmission to the transmission focus point, on the basis of a reception signal received by each element according to the reflected waves reflected due to the ultrasonic wave transmission to the transmission focus point.

Description

technical field [0001] The present invention relates to an ultrasonic diagnostic device, and in particular to a focus information determination method and device for determining the actual focus position of ultrasonic waves transmitted from an ultrasonic probe or an effective area where the focus position exists, and an ambient sound velocity acquisition method and device. Background technique [0002] Conventionally, ultrasonic diagnostic apparatuses have been proposed that acquire tomographic images of a subject using ultrasonic waves and provide them for medical diagnosis. In such an ultrasonic diagnostic apparatus, in order to improve the azimuth resolution of an ultrasonic image, when ultrasonic waves are transmitted from the ultrasonic probe, a transmission delay time is set for each ultrasonic wave transmitted from each element of the ultrasonic probe, that is, so-called transmission focusing is performed, When acquiring a reception signal, a reception delay time is s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00
CPCG01S7/52049G10K11/346G01S15/8915G01S7/52074G01N29/07
Inventor 胜山公人
Owner FUJIFILM CORP
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