Usefulness of Tc-99m RBC SPECT/MRI fusion imaging in small suspected hepatic hemangiomas.

Evaluation of Tc-99m red blood cell (RBC) SPECT in suspected hemangioma of the liver shows a high sensitivity and specificity when lesions are larger than 2 cm, and allows for the discrimination between hemangioma and other hepatic lesions. However, its major limitation arises with small size lesions. The accuracy of Tc-99m RBC SPECT in small suspected hemangiomas of the liver might improve the registration and fusion of 3-dimensional images from Tc-99m RBC SPECT and MRI. The authors report a patient presenting with a small suspected hepatic hemangioma, for whom this technique played a crucial role in establishing the final diagnosis.