Low density microspheres and their use as contrast agents for computed tomography
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United States of America Patent
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Jan 25, 1994
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app pub date -
Jan 19, 1993
filing date -
Apr 5, 1991
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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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