Biodegradable microspheres dyed with x-ray opaque material...

Details Biodegradable microspheres dyed with x-ray opaque material... Biodegradable microspheres dyed with x-ray opaque material...

A - Human Necessities

61

K

167/35

A61K 49/04 (2006.01) A61K 9/16 (2006.01)

Patent

CA 1288335

ABSTRACT OF THE DISCLOSURE An inexpensive and easy to use method of visualizing an arterial circulation using biodegradable microspheres dyed with an X-ray absorbent material, which enables the diagnosis of pulmonary embolism, is provided. The microspheres are injected into bloodstream at a particular location such that they travel through the desired arterial circulation, where they become lodged. Upon exposure of the arterial circulation to X-rays, blood vessels therein containing the microspheres will absorb the X-rays, causing them to show on a developed X-ray in contrast to other blood vessels and body tissue which do not contain the microspheres that transmit the X-rays. The microspheres are designed to dissolve into the bloodstream within fifteen to thirty minutes after their introduction.

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