The use of cadmium telluride detectors for the qualitative analysis of diagnostic x-ray spectra

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Published under licence by IOP Publishing Ltd
, , Citation E Di Castro et al 1984 Phys. Med. Biol. 29 1117 DOI 10.1088/0031-9155/29/9/008

0031-9155/29/9/1117

Abstract

A method is introduced for the evaluation of x-ray spectra from x-ray machines operating in the range 50-100 kVp using a cadmium telluride (CdTe) detector with low detection efficiency. The pulse height distribution obtained with this kind of detector does not represent the true photon spectra owing to the presence of K-escape, Compton scattering, etc.; these effects were evaluated using a Monte Carlo method. A stripping procedure is described for implementation on a Univac 1100/82 computer. The validity of the authors' method was finally tested by comparison with experimental results obtained with a Ge detector and with data from the literature; the results are in good agreement with published data.

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10.1088/0031-9155/29/9/008