An assembly of devices comprising a diagnostic, stationary, single photon emission computed tomography (SPECT) system designed exclusively for use in tomographic imaging applications. It detects, records, quantifies and analyses radionuclide emissions produced during the decay of radiopharmaceuticals or other radiation emitting materials injected into, or ingested by, a patient. The gantry position is fixed and the imaging table/chair moves/rotates under computer or manual control. Its imaging capabilities include static and dynamic imaging applications and three-dimensional (3-D) digital image reconstruction/display at any angle including axial, coronal and sagittal planes.