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Discordance Between FDG Uptake and Technetium-99m-HMPAO Brain Perfusion in Acute Traumatic Brain Injury

Nuclear Medicine Section, Departments of Radiology and Neurology, St. Vincent's Hospital and Medical Center of New York, New York Medical College at Valhalla, New York

Correspondence: For correspondence or reprints contact: Hussein M. Abdel-Dayem, MD, Nuclear Medicine Section, Department of Radiology, St. Vincent's Hospital and Medical Center of New York, 53 W. 11th St., New York, NY 10011.

ABSTRACT

A 28-yr-old woman who sustained a mild traumatic brain injury had an ¹⁸F-fluorodeoxyglucose (FDG) PET brain study using coincidence imaging performed on a dual-head gamma camera (MCD version; ADAC, Milpitas, CA) followed 24 hr later by ^99mTc-hexamethyl propyleneamine oxime SPECT brain perfusion imaging using a triple-head gamma camera (TRIONIX, Twinsburg, OH). The results of the SPECT brain perfusion study demonstrated decreased frontoparietal cortical brain perfusion, whereas ¹⁸F-FDG cerebral uptake was normal. Neuropsychological evaluation suggested frontal lobe involvement. This case demonstrates the possibility of discordance between brain perfusion and glucose uptake in acute mild traumatic brain injury.

Key Words: fluorine-18-fluorodeoxyglucose • technetium-99m-hexamethyl propyleneamine oxime • traumatic brain injury • coincidence imaging • SPECT brain perfusion

This article has been cited by other articles:

				H. G. Belanger, R. D. Vanderploeg, G. Curtiss, and D. L. Warden Recent Neuroimaging Techniques in Mild Traumatic Brain Injury J Neuropsychiatry Clin Neurosci, February 1, 2007; 19(1): 5 - 20. [Abstract] [Full Text] [PDF]