Abstract: A gantry and pallet assembly using scintillation cameras to acquire data emitted from radiopharmaceuticals previously introduced into a patient. The radiopharmaceuticals accumulate in a predetermined region of interest within the patient. The gantry can perform both whole body and single photon emission computed tomograph (SPECT) scans. The gantry has two scintillation cameras mounted in a diametrically opposed manner on and in close proximity to a rotation ring. Each camera can be radially translated relative to the rotation ring simultaneously with the rotation of the rotation ring. The gantry is capable of being translated along a pair of translation tracks so that a pallet upon which a patient lies passes therethrough. The pallet assembly has a storage carriage which supports a substantially rectangular flat pallet upon a slidable frame, and a curved pallet upon an extension assembly. The storage carriage can be slid away from the gantry or close to the gantry.