Computerized tomography (CT) imaging system with multi-slit rotatable collimator
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United States of America Patent
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Dec 8, 2015
Grant Date -
May 22, 2014
app pub date -
Nov 18, 2013
filing date -
Nov 16, 2012
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Abstract
Apparatus for collimating an X-ray beam, the apparatus including a multi-slit rotatable collimator including a semi-tubular structure extending coaxially along a longitudinal axis and being formed out of an X-ray impermeable material, with at least two slits formed in the semi-tubular structure, wherein the at least two slits extend parallel to the longitudinal axis of the semi-tubular structure, a mount for rotatably supporting the semi-tubular structure in the path of an X-ray beam, and a drive mechanism for selectively rotating the semi-tubular structure about the longitudinal axis of the semi-tubular structure, whereby to selectively (i) position one slit in the path of the X-ray beam so as to tailor the X-ray beam to the width of that slit, and (ii) position a solid portion of the semi-tubular structure in the path of an X-ray beam so as to block an X-ray beam.
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