Patent Number: 6,254,543

Title: Adaptive cancellation of ring-down artifact in IVUS imaging

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.

Inventors: Grunwald; Sorin (Santa Clara, CA), Teo; Tat-Jin (Sunnyvale, CA)

Assignee: SciMed Life Systems, Inc.

International Classification: A61B 8/00 (20060101); G01S 7/52 (20060101); A61B 8/12 (20060101); G01S 7/523 (20060101); G01S 7/524 (20060101); A61B 008/00 ()

Expiration Date: 07/03/2018