Methods and apparatus for positioning a CT imaging x-ray beam

摘要

In one embodiment, the present invention is a method for positioning an x-ray beam (16) on a multi-slice detector array (18) of an imaging system in which the detector array has rows (54,56,58) of detector elements and is configured to detect x-rays in slices along a z-axis. The method includes steps of comparing data signals representative of x-ray intensity received from different rows of detector elements and positioning the x-ray beam in accordance with a result of the comparison.