Stereoscopic X-ray fluoroscopy system using radiofrequency fields
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United States of America Patent
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Oct 12, 1993
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app pub date -
Sep 3, 1991
filing date -
Sep 3, 1991
priority date (Note) -
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Abstract
During an X-ray procedure, the position and orientation of an invasive device, such as a catheter are measured with radio frequency fields and displayed stereoscopically. Instantaneous three-dimensional positions of the invasive device are displayed by superposition of a graphic symbol on static X-ray images obtained at two different view angles. The X-ray images are obtained only when deemed necessary by the operator to minimize X-ray dose. A single X-ray source and detector may be implemented since it is not necessary to obtain the X-ray images simultaneously.
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