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Factors Affecting Image Quality for Megavoltage and Diagnostic X-Ray a-Si:H Imaging Arrays.

Published online by Cambridge University Press:  21 February 2011

L.E. Antonuk ,
J. Yorkston ,
W. Huang ,
J. Boudry ,
E.J. Morton ,
M.J. Longo  and
R.A. Street
L.E. Antonuk
Affiliation:
Department of Radiation Oncology, University of Michigan, Ann Arbor, Ml 48109
J. Yorkston
Affiliation:
Department of Radiation Oncology, University of Michigan, Ann Arbor, Ml 48109
W. Huang
Affiliation:
Department of Radiation Oncology, University of Michigan, Ann Arbor, Ml 48109
J. Boudry
Affiliation:
Department of Radiation Oncology, University of Michigan, Ann Arbor, Ml 48109
E.J. Morton
Affiliation:
Department of Radiation Oncology, University of Michigan, Ann Arbor, Ml 48109
M.J. Longo
Affiliation:
Department of Physics, University of Michigan, Ann Arbor, Ml 48109
R.A. Street
Affiliation:
Xerox Palo Alto Research Center, 3333 Coyote Hill Road, Palo Alto, CA 94304
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Abstract

Two factors which could affect the image quality of the a-Si:H arrays under development by our collaboration are the temporal drift of the leakage current of the sensors and the capture and release of charge in deep trapping states in the sensors. Data for both of these factors are reported, the implications for imaging are discussed, and strategies for reducing or eliminating their effects are suggested.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 258: Symposium A – Amorphous Silicon Technology – 1992 , 1992 , 1069
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

[1] Street, R.A. et al., Material Research Society Proc. 192, 441 (1990).Google Scholar
[2] Antonuk, L.E. et al., Mat. Res. Soc. Symp. Proc. 219, 531 (1991).Google Scholar
[3] Antonuk, L.E. et al., accepted for publication in Medical Physics.Google Scholar
[4] Fujieda, I. et al., submitted to 1991 IEEE Nucl. Sc. Sym. and Med. Imaging.Google Scholar
[5] Street, R.A., Philosophical Magazine B, 63, 1343 (1991).Google Scholar
[6] Street, R.A. et al., “Large Area 2-Dimensional a-Si:H Imaging Arrays”, this conference.Google Scholar