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Dose Reduction For The Thin Twin Axial Scan Mode

IP.com Disclosure Number: IPCOM000012541D
Publication Date: 2003-May-13

Publishing Venue

The IP.com Prior Art Database

Abstract

We have developed the thin twin (TT) mode for multi-slice CT scanners to provide ultra-thin slice/ultra-high resolution images. This is accomplished by limiting the X-ray into the two innermost detector rows using source-collimation. due to the mechanical limitation of the collimators and the artifact level constrain, the collimation could not be set to the theoretical limit. Therefore, a small amount of X-rays are illuminating the adjacent outer detector rows on both sides of the two innermost rows. The current design ignores the information from these two outer detector rows.