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Clin Nucl Med. 1993 Jun;18(6):502-5.

False-negative cerebral radionuclide flow study, in brain death, caused by a ventricular drain.

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  • 1Department of Radiology, Vanderbilt University Medical Center, Nashville, Tennessee 37232-2675.


A radionuclide cerebral blood flow study demonstrated normal flow in the face of clinical and electrical brain death in a patient who had a ventricular drain. After the drain became obstructed and was removed, a further radionuclide study demonstrated no flow, confirming the role of the drain in the earlier false-negative studies.

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