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The development of a xenon/computed tomography cerebral blood flow quality assurance phantom
1Department of Radiology, University of Pittsburgh, Pennsylvania 15261.
Abstract:
A simple, easy to use, quality assurance and performance test phantom was developed for the xenon/computed tomography (CT) cerebral blood flow method. The phantom combines an inhalation system which allows for the simulation of xenon buildup or washout in the arterial blood as well as a multisection translatable cylinder in which several sections can be scanned during a preselected protocol to simulate the CT enhancement in brain tissue during a study. The phantom and scanning protocol are described and their use is demonstrated. The results compare favorably to the theoretically expected fast, intermediate, and slow "flow" values designed into the phantom.
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