Adaptive cancellation of ring-down artifact in IVUS imaging

Details Adaptive cancellation of ring-down artifact in IVUS imaging Adaptive cancellation of ring-down artifact in IVUS imaging

1998-10-02

2000-08-15

Jaworski, Francis J.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

600463, A61B 800, A61B 812

Patent

active

061028622

ABSTRACT:
In an intravascular ultrasonic (IVUS) imaging system ring-down artifact is reduced or eliminated by dynamically enhancing the ring-down over a plurality of scans, determining the ring-down range by keying on a ring-down-to-blood transition characterized by a rapid change from high amplitude to low amplitude echoes, and using a spectral pattern for a single or several A-scans within the ring-down range, using for example an FFT analysis, as the basis of selectively filtering current or subsequent images using the recently computed ring-down pattern.

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patent: 6036650 (2000-03-01), Wu et al.

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