An Inverse-Geometry Volumetric CT System With a Large-Area Scanned Source: A Feasibility Study
Document Type
Article
Language
eng
Format of Original
5 p.
Publication Date
9-2004
Publisher
American Association of Physicists in Medicine
Source Publication
Medical Physics
Source ISSN
0094-2405
Original Item ID
doi: 10.1118/1.1786171
Abstract
We propose an inverse-geometry volumetric CT system for acquiring a 15-cm volume in one rotation with negligible cone-beam artifacts. The system uses a large-area scanned source and a smaller detector array. This note describes two feasibility investigations. The first examines data sufficiency in the transverse planes. The second predicts the signal-to-noise ratio(SNR) compared to a conventional scanner. Results showed sufficient sampling of the full volume in less than 0.5 s and, when compared to a conventional scanner operating at 24 kW with a 0.5-s voxel illumination time (e.g., 0.5-s gantry rotation and pitch of one), predicted a relative SNR of 76%.
Recommended Citation
Schmidt, Taly Gilat; Fahrig, Rebecca; Pelc, Norbert J.; and Solomon, Edward G., "An Inverse-Geometry Volumetric CT System With a Large-Area Scanned Source: A Feasibility Study" (2004). Biomedical Engineering Faculty Research and Publications. 78.
https://epublications.marquette.edu/bioengin_fac/78
Comments
Medical Physics, Vol. 31, No. 9 (September 2004): 2623-2627. DOI.