AUTOMATIC PATIENT ALIGNMENT DURING NUCLEAR IMAGING BODY CONTOUR TOMOGRAPHY SCANS

摘要

A method for performing a tomographic scan of an organ of interest of a patient with an emission tomographic system including a gantry having a detector secured thereto, a movable patient table, and a computer system coupled to the gantry and to the table to detect and control the position of the detector and table, the detector including a collimator, with said method establishing a non- circular orbit detector path characterized by: varying detector pitch at a plurality of reference positions: and performing a scan by: controlling detector pitch so that the detector substantially follows the non- circular orbit path; controlling detector tilt so that the collimator face is substantially parallel with a detector axis of rotation; controlling longitudinal table motion so that the organ of interest is imaged in substantially the same transverse slices; and collecting data at a plurality of views on the non-circular orbit path. _______________