Incidental accumulation of Technetium-99m pertechnetate in subacute cerebral infarction: A case report

Figure 1 Salivary scintigraphy and fluid-attenuated inversion recovery phase magnetic resonance image at 2 wk after diagnosis of acute cerebral infarction. A and B: Anterior and right oblique images of salivary scintigraphy show an unexpected accumulation of Tc-99m pertechnetate in the right frontoparietal area; C: Fluid-attenuated inversion recovery phase magnetic resonance image demonstrates diffuse high signal intensity in the same area. Anterior and posterior horns of the right lateral ventricle were obliterated and the midline was slightly shifted to the left side due to right frontoparietal swelling.

Figure 2 Follow-up salivary scintigraphy and fluid-attenuated inversion recovery phase magnetic resonance image after 2 years. A and B: The second series of salivary scintigraphy shows no abnormal radioactivity in the brain; C: Fluid-attenuated inversion recovery phase magnetic resonance image also demonstrates markedly decreased high signal intensity without evidence of swelling in the previous lesion suggesting chronic infarction.