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Scanning transform method and device for ultrasonic image-forming

A technology of ultrasonic imaging and ultrasonic echo, which is applied in the field of scan conversion and its devices for ultrasonic imaging, and can solve problems such as ultrasonic image noise

Active Publication Date: 2009-03-11
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0014] In order to solve the problem in the prior art that noise is brought to ultrasound images due to interpolation processing, the present invention provides a new scan conversion method for ultrasound imaging and a device using the method

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  • Scanning transform method and device for ultrasonic image-forming
  • Scanning transform method and device for ultrasonic image-forming
  • Scanning transform method and device for ultrasonic image-forming

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Embodiment Construction

[0045] For the sake of clarity, similar (identical) steps and / or modules are denoted by similar (identical) reference numerals in the figures.

[0046] image 3 A flowchart of a scan conversion method according to an embodiment of the present invention is shown. It generally includes: a storage step 11, which stores the sampling data from the ultrasonic echo signal into the memory; a coordinate transformation step 12, which converts the target coordinate point in the display coordinate system and the interpolation coordinate point in the sampling coordinate system; and Interpolation step 13, which performs interpolation processing on some sampled data adjacent to the interpolation coordinate point to obtain interpolation data at the interpolation coordinates, wherein, the interpolation step 13 includes a linear interpolation step 131 and a non-linear interpolation sub-step 132, the non-linear interpolation Sub-step 132 implements low-pass filtering of the ultrasound echo sign...

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Abstract

The invention provides a scan conversion method used for ultrasonic imaging, which includes a storage step: storing the sampling date from an ultrasonic echo signal into a memorizer; a switching step: conversion is carried out between the target coordinate points in a display coordinate system and the interpolation coordinate points in a sampling coordinate system; an interpolation step: interpolation treatment is carried out on a plurality of sampling data on the neighboring interpolation coordinate points for obtaining the interpolation data of the position of an interpolation coordinate; wherein, the interpolation step includes a sub step of nonlinear interpolation; besides, the sub step of nonlinear interpolation is selected for carrying out low-pass filter on the ultrasonic echo signal. When interpolation is carried out along the theta shaft of the coordinate, a four-point interpolation method is adopted in the invention. The arithmetic of an interpolation coefficient can be based on a cubic b-spline function. The interpolation function has more homogeneous low-pass filter effect on space and weakens the noise of an ultrasonic image caused by the interpolation treatment.

Description

technical field [0001] The present invention relates to a scan conversion method for ultrasonic imaging, in particular to an interpolation processing method used in digital scan conversion of ultrasonic imaging, and also relates to a device using the above method. Background technique [0002] Medical ultrasonic imaging diagnostic equipment often uses the propagation of ultrasonic waves in the human body to obtain ultrasonic characteristic information of human tissue and organ structures. Current ultrasonic diagnostic systems usually use multi-element probes. In this system, high-voltage pulse waves are loaded on each array element of the probe, and the array elements are excited to generate high-frequency ultrasonic waves, which then form a transmission beam and enter the human body. Each array element of the probe receives the echo scattered or reflected by the tissue structure of the human body to form a receiving beam. The ultrasonic diagnostic system extracts the info...

Claims

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Application Information

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IPC IPC(8): A61B8/00G06Q50/00
CPCG01S7/52044G06T3/4007G06T3/00
Inventor 李勇姚斌
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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