X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Patent
1997-03-19
1998-08-11
Porta, David P.
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
378 18, 378207, A61B 603
Patent
active
057938350
ABSTRACT:
A quality assurance test phantom having a shell wherein water and test objects reside in conjunction with a bellows capable of longitudinally translating one or more of a variety of test objects within the inside of the phantom via a screw mechanism is described. These test objects are employed in novel tests to quantitatively evaluate the imaging performance of a computed tomography ("CT") device with specific regard to the construction of pseudo-planar slices produced from scan data taken using helical scanning techniques.
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