Device and method for determining the concentration of a tracer in blood
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United States of America Patent
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Jan 19, 2010
Grant Date -
Jun 14, 2007
app pub date -
Nov 4, 2004
filing date -
Nov 11, 2003
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Expired
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Abstract
With the aid of an X-ray CT (5, 6), the spatial position (r) of a body cavity that is filled with blood is determined, which for example can be a part of the aorta or of the left ventricle of the heart of a patient (1). Subsequently, a TOF-PET unit that includes two detector elements (3a, 3b) is positioned to place a predefined volume element (2) in the blood filled body cavity. From pairs of annihilation quanta received from the volume element (2) a concentration of the tracer in this volume element (2) and thus in the blood is determined. This concentration can for example be used within the framework of pharmaco-kinetic examinations which are carried out on the patient (1) with the aid of a three-dimensional PET unit (4).
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