The application of technetium-99m-red blood cell scintigraphy in the diagnosis of orbital cavernous hemangioma

Objective: The purpose of this study was to evaluate the clinical value of technetium-99m-red blood cell (99mTc-RBC) scintigraphy in the diagnosis of orbital cavernous hemangioma (OCH). Patients and methods: Forty-one patients with pathologically confirmed orbital mass, of which 10 were OCH, underwent 99mTc-RBC scintigraphy in this study. The scanning procedure included an initial perfusion phase, followed by an early and a delayed blood pool phase. All patients underwent ultrasonography and computed tomography (CT), and 15 patients also underwent MRI. Results: All 10 OCH patients had no abnormal findings on radionuclide angiographic images and early blood pool phase, but increased activity was found during delayed blood pool phase. All other non-OCH orbital tumours did not have this tracer pattern. The radioactivity ratios of tumour to nontumour were 2.96±0.05 and 1.14±0.25, respectively, which had a statistically significant difference (t=15.18, P
Source: Nuclear Medicine Communications - Category: Nuclear Medicine Tags: Original Articles Source Type: research