Alignment and resolution studies of a MARS CT scanner /A. Gongadze, A. S. Zhemchugov, P. Butler [et.al.]

Электронный ресурс
Другой Автор
Gongadze, A.
Butler, P.
Bell, Steven J.
Chelkov, G. A.
Kozhevnikov, D. A.
Potrap, I. N.
Demichev, M. A.
Smolyanskiy, P. I.
Abramishvili, R.
Kotov, S. A.
Butler, A.
Zhemchugov, A. S.
Источник
Physics of particles and nuclei letters 2015 Vol. 12, № 5. P. 725-735
Аннотация
This paper describes a procedure of alignment of MARS CT scanner with cone beam geometry. The position of the xray source relative to the detector, the tilt of the detector are measured during alignment. The mechanical precision of gantry movement is determined. Significant improvement in the quality of image reconstruction has been achieved as a result of the calibration. Spatial resolution (PTF) of the scanner is confirmed to be about 30 μm.
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Резюме
This paper describes a procedure of alignment of MARS CT scanner with cone beam geometry. The position of the xray source relative to the detector, the tilt of the detector are measured during alignment. The mechanical precision of gantry movement is determined. Significant improvement in the quality of image reconstruction has been achieved as a result of the calibration. Spatial resolution (PTF) of the scanner is confirmed to be about 30 μm.