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A new CT collimator for producing two simultaneous overlapping slices from one scanA new CT collimator is developed which is capable of producing two simultaneous successive overlapping images from a single scan. The collimator represents a modification of the standard EMI 5005 collimator achieved by alternately masking one end or portions of both ends of the X-ray detectors at a 13-mm beamwidth so that a set of 540 filtered projections is obtained for each scan which can be separated into two sets of interleaved projections corresponding to views 3 mm apart. Tests have demonstrated that the quality of the images produced from these two projections almost equals the quality of those produced by the standard collimator from two separate scans. The new collimator may thus be used to achieve a speed improvement in the generation of overlapping sections as well as a reduction in X-ray dosage.
Document ID
19810063271
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kwoh, Y. S.
(University of Southern California Los Angeles, CA, United States)
Glenn, W. V., Jr.
(Long Beach, Memorial Hospital Medical Center Long Beach, CA, United States)
Reed, I. S.
(Southern California, University Los Angeles, CA, United States)
Truong, T. K.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 11, 2013
Publication Date
September 1, 1981
Publication Information
Publication: IEEE Transactions on Biomedical Engineering
Volume: BME-28
Subject Category
Man/System Technology And Life Support
Accession Number
81A47675
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-80-0151
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

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