Method and apparatus for removing artifacts from a

专利名称：Method and apparatus for removing

artifacts from an ultrasonically generatedimage of a small cavity

发明人：Michael J. Eberle申请号：US07/719804申请日：19910624公开号：US05183048A公开日：19930202

摘要：An apparatus and method for imaging a small cavity is disclosed whereinreference waveforms to be used in obtaining an improved image are generated in vivoinstead of in vitro as is the conventional procedure. The reference waveforms are used tostrip the imaging signals of noise that otherwise produces artifacts in an image generatedfrom the signals. The imaging probe is first inserted into a first area of the vascularsystem to be imaged and reference waveforms are collected. After collecting thereference waveforms, the imaging probe is further inserted into the vascular system to asecond area that is to be imaged. If new reference waveforms are required, the imagingprobe is simply withdrawn to the first area of the vascular system wherein new referencewaveforms are collected, and then the imaging probe is again further inserted to thesecond area, which then is imaged. The present invention also provides an imagingapparatus capable of imaging close to the surface of the probe and, in this regard,removes artifacts in the imaging waveforms that usually form a corona in the visual imageabout the perimeter of the probe.

申请人：ENDOSONICS CORPORATION

代理机构：Leydig, Voit & Mayer

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