Method and apparatus for measuring hepatic blood flow amount
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United States of America Patent
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Jan 23, 2001
Grant Date -
N/A
app pub date -
Mar 17, 1999
filing date -
Jan 29, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In order to easily measure the hepatic arterial blood flow amount and the portal blood flow amount flowing through the liver, a mixed gas supply apparatus is used to supply a mixed gas of xenon gas and oxygen gas to the lung of a specimen for a certain period of time so that the change in xenon concentration in the tissue of the liver of the specimen is measured (detected) while making decomposition into picture elements by using an X-ray CT system. The hepatic arterial blood flow amount and the portal blood flow amount concerning the respective picture elements obtained by the decomposition are determined by using a computer on the basis of the fact that the xenon concentration in the liver tissue is determined by the xenon concentration in the hepatic arterial blood flow and the xenon concentration in the portal blood flow.
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