Abstract: An emission tomography carousel system and method for use with a stationary radiation detector in Single Photon Emission Computer Tomography (SPECT) procedures is disclosed. In a preferred embodiment the carousel includes a patient platform having a seat and a tiltable, fiberglass composition back support, and includes two linear motion positioning tables and one rotary motion positioning table as part of a positionable mounting for moving the patient platform in three degrees of motion. A programmed computer controls the motion of the carousel about a predetermined locus of points. The method includes positioning the carousel in a "home" position, placing a patient in the carousel and manually positioning the patient platform to a desired close position with respect to a stationary radiation detector. The position is then recorded in the memory of a control computer and the procedure is repeated to obtain the desired number of radii of the patient's organ of interest to the detector.