X-ray emitting sources and uses thereof
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United States of America Patent
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-
Jun 4, 2002
Grant Date -
N/A
app pub date -
Jan 30, 2001
filing date -
Jan 30, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for treating an occlusion or constriction, such as a stenosis in a blood vessel or other conduit within the body, as well as for treating a tumor or cancerous area occurring around a conduit or duct in the body is provided. The device includes an insert having a non-radioactive precursor, and a capsule encapsulating the insert. The precursor, containing tungsten which is substantially enriched in tungsten-180, can be activated to emit X-ray radiation and delivered to the treatment site to treat the stenosis or cancerous area. Upon activation by exposure to neutron flux, tungsten-180 is transmuted to contain an amount of X-ray-emitting tungsten-181 sufficient for treatment. The tungsten can also act as an X-ray-opaque marker to facilitate external visualization of capsule after delivery to the treatment site.
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