Title :
A 5 inch diameter position-sensitive scintillation counter
Author :
He, Z. ; Bird, A.J. ; Ramsden, D. ; Meng, Y.
Author_Institution :
Dept. of Phys., Southampton Univ., UK
Abstract :
A 5-in-diameter hard X-ray imager has been built, and position resolution of 4.0 mm FWHM has been obtained at 122 keV using a 3-mm-thick, 125-mm-diameter NaI(Tl) crystal with a 100-mm-diameter exit window. The results show that the light output and spatial resolution vary considerably over the surface of such a detector. In order to make the best use of the imaging capability of these tubes, individual photon events must be corrected both in energy and in position. The results of a 300 point detailed survey of the position-sensitive detector demonstrate its overall performance. A thyroid phantom image was obtained using this imager
Keywords :
X-ray detection and measurement; biomedical equipment; position sensitive particle detectors; scintillation counters; 122 keV; 4 mm; 5 in; NaI(Tl); NaI:Tl; hard X-ray detector; light output; performance; position resolution; position-sensitive scintillation counter; spatial resolution; thyroid phantom; Biomedical imaging; Cameras; Conducting materials; Optical imaging; Photomultipliers; Physics; Position sensitive particle detectors; Scintillation counters; Spatial resolution; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0884-0
DOI :
10.1109/NSSMIC.1992.301132
