Transvascular intracardiac applications of a miniaturized phased-array ultrasonic endoscope. Initial experience with intracardiac imaging in piglets.
1991; Lippincott Williams & Wilkins; Linguagem: Inglês
ISSN
1524-4539
AutoresL MValdes-Cruz, ESideris, D JSahn, AMurillo-Olivas, OKnudson, ROmoto, SKyo, RGulde,
Tópico(s)Ultrasound and Hyperthermia Applications
ResumoBACKGROUNDRecent advances in miniaturization of phased-array and mechanical ultrasound devices have resulted in exploration of alternative approaches to cardiac and vascular imaging in the form of transesophageal or intravascular imaging. Preliminary efforts in adapting phased-array endoscopes designed for transesophageal use to a transvascular approach have used full-sized phased-array devices introduced directly into the right atrium in open-chested animals. The purpose of this study was to assess the feasibility of using a custom-made, very small phased-array endoscope for intracardiac imaging introduced intravascularly through a jugular venous approach in young piglets.METHODS AND RESULTSExperimental atrial septal defects created in four piglets (3-4 weeks old) had been closed with a buttoned atrial septal defect closure device consisting of an occluder in the left atrium and a counteroccluder in the right atrium. Five to 15 days after atrial septal defect closure, the piglets were returned to the exp...
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