Low density microspheres and their use as contrast agents for computed tomography and in other applications
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United States of America Patent
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Mar 4, 2003
Grant Date -
Sep 27, 2001
app pub date -
Jun 18, 1997
filing date -
Apr 5, 1991
priority date (Note) -
Expired
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Abstract
Substantially homogeneous aqueous suspensions of low density microspheres are presented as contrast media for imaging the gastrointestinal tract and other body cavities using computed tomography. In one embodiment, the low density microspheres are gas-filled. With computed tomography, the contrast media serve to change the relative density of certain areas within the gastrointestinal tract and other body cavities, and improve the overall diagnostic efficacy of this imaging method.
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