Scan conversion for ultrasonic imaging and apparatus using...

Details Scan conversion for ultrasonic imaging and apparatus using... Scan conversion for ultrasonic imaging and apparatus using...

2007-12-31

2011-12-06

Kiknadze, Irakli (Department: 2882)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C382S131000

Reexamination Certificate

active

08070683

ABSTRACT:
A scan conversion method for ultrasonic imaging is disclosed. The method comprises a storage step for storing sample data derived from ultrasonic echo signals into a memory; a conversion step for performing conversion between target coordinate points in a display coordinate system and interpolation coordinate points in a sampling coordinate system; and an interpolation step for interpolating several sample data adjacent to the interpolation coordinate points to obtain the interpolation data at the interpolation coordinate points, wherein the interpolation step includes a nonlinear interpolation substep selected for low-pass filter of the ultrasonic echo signals. When interpolation is conducted along Axis θ of the polar coordinates, 4-point interpolation may be used. The interpolation coefficient may be based on cubic B-spline function, which has relatively uniform low-pass filter effects, thereby reducing noise result from interpolation in ultrasonic image.

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