SIMULTANEOUS GA-67-CITRATE AND TC-99M SESTAMIBI SPET IN A CASE OF MYOCARDIAL LYMPHOMA - COMPARISON WITH ECHOCARDIOGRAPHY BEFORE AND AFTER CHEMOTHERAPY

A patient with diffuse large cell lymphoma involving the interventricu lar septum and the inferior ventricular wall was imaged with a simulta neous dual-isotope single-photon emission tomography (SPET) acquisitio n technique, using the radiotracers technetium-99m hexakis 2-methoxyis obutylisonitrile (sestamibi) and gallium-67 citrate, in conjunction wi th echocardiography, prior to and following the first course of chemot herapy. Simultaneous acquisition - with the advantage of displaying co rresponding sets of SPET slices without any need for position correcti on -, supplemented by echocardiography, increased the accuracy of eval uation of the extent of disease and response to treatment.