05054492 is referenced by 344 patents and cites 5 patents.

An ultrasonic imaging catheter comprises a catheter body having a distal end and a proximal end. An ultrasonic imaging transducer is located within the distal end and is arranged to produce an image in an image plane which is generally normal to the axial direction of the catheter. An ultrasonically opaque element is attached to the catheter body and disposed through the image plane so that an image artifact or marker appears on the resulting ultrasonic image. The artifact corresponds to the location on the catheter where the element is located. A fluoroscopic marker is also provided on the catheter body, typically located proximally of the region where the ultrasonic imaging transducer and other components are located. The fluoroscopic marker has a geometry selected so that the marker has a unique appearance depending on the rotational orientation of the catheter when viewed by fluoroscopy. In this way, the viewing physician may determine the actual rotational orientation of the catheter within the body lumen being viewed and may further correlate the position of the catheter with the apparent position of the ultrasonic image which has been obtained.

Title
Ultrasonic imaging catheter having rotational image correlation
Application Number
7/628745
Publication Number
5054492
Application Date
December 17, 1990
Publication Date
October 8, 1991
Inventor
Mark L Pomeranz
Los Gatos
CA, US
Stephen M Salmon
Sunnyvale
CA, US
Robert M Scribner
Sunnyvale
CA, US
Agent
Townsend and Townsend
Assignee
Cardiovascular Imaging Systems
CA, US
IPC
A61B 8/12
View Original Source