Method and apparatus for imaging distant anatomical structures in intra-cardiac ultrasound imaging
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United States of America Patent
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app pub date -
Mar 17, 2005
filing date -
Jul 22, 2002
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Abandoned
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Abstract
An intra-cardiac imaging system that includes an ultrasound catheter that can image the left heart from within the right heart. The catheter has a proximal end, a distal end, and a lumen extending therebetween. The distal end includes an acoustic window longitudinally oriented and having a length of at least ten millimeters. A linear ultrasound transducer having an active surface is longitudinally mounted inside the lumen of the catheter at the distal end of the catheter adjacent the acoustic window. The active surface of the ultrasound transducer is directed toward the acoustic window, is approximately the same length as the acoustic window, and is capable of transmitting an ultrasound signal at a frequency of about 1.5 MHz to about 9 MHz.
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