Patent ID: 7477721
Filing Date: 2009-01-13
Classification: A61B,G01N

Abstract:
1. A CT scanner subassembly comprising: a common stationary gantry frame; a radiation translucent bore of one of a plurality of selectable cross sectional sizes attached to the common stationary gantry frame; a plurality of common bearing members mounted to the stationary gantry; a common annular bearing race rotatably supported on the bearing members; at least one common motor module for rotating the annular bearing race; a means for mounting an x-ray source and a radiation detector at any of a plurality of selectable distances radially inward from the bearing race such that the common bearing members and the bearing race are used to fabricate CT scanners with any of a plurality of bore sizes; and a rotor mounted to the annular bearing race, wherein the x-ray source and the radiation detector are mounted at first and second locations on the rotor to define a first size examination region and at third and fourth locations to define a second different size examination region.