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Indian J Nucl Med. 2019 Jan-Mar;34(1):74-75. doi: 10.4103/ijnm.IJNM_113_18.

Technetium-99m Labeled Tropane Derivative: Uptake in a Pituitary Macroadenoma.

Author information

1
Department of Nuclear Medicine and Positron Emission Tomography, All India Institute of Medical Sciences, New Delhi, India.
2
Department of Neurology, CN Centre, All India Institute of Medical Sciences, New Delhi, India.

Abstract

We present a case of suspected idiopathic Parkinson's disease in whom extrastriatal accumulation of Technetium-99m labeled tropane derivatives in a pituitary macroadenoma interfered with image quality and interpretation. Subsequent F-18 fluoro-dihydroxyphenylalanine positron emission tomography/computed tomography was useful to demonstrate the absence of presynaptic dopaminergic dysfunction.

KEYWORDS:

Fluoro-dihydroxyphenylalanine; Parkinson disease; pituitary macroadenoma; single-photon emission computed tomography/computed tomography; technetium-99m labeled tropane derivatives

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