Contrast-to-noise and exposure measurements of an aSi:H/Csl(Tl) flat-panel based digital radiography system using a QC chest phantom

Xinming Liu; Chris C. Shaw; Peter Balter; S. Cheenu Kappadath; Chao-Jen Lai

doi:10.1117/12.480473

5 June 2003 Contrast-to-noise and exposure measurements of an aSi:H/Csl(Tl) flat-panel based digital radiography system using a QC chest phantom

Xinming Liu, Chris C. Shaw, Peter Balter, S. Cheenu Kappadath, Chao-Jen Lai

Author Affiliations +

Proceedings Volume 5030, Medical Imaging 2003: Physics of Medical Imaging; (2003) https://doi.org/10.1117/12.480473
Event: Medical Imaging 2003, 2003, San Diego, California, United States

Abstract

The amorphous silicon (a-Si:H) flat panel imaging systems have recently become commercially available and gained acceptance as promising candidates for implementing digital radiography. In this work, SNRs, CNRs and figure-of-merit, defined as CNR²/SEEs, were measured for a commercial a-Si:H/CsI(Tl) flat-panel digital chest radiography system as a function of the kVp for three different regions in the images of a chest phantom: lung, heart and subphrenic. Using these measurements, issues of image quality and optimal selection of the kVp are discussed.

Citation Download Citation

Xinming Liu, Chris C. Shaw, Peter Balter, S. Cheenu Kappadath, and Chao-Jen Lai "Contrast-to-noise and exposure measurements of an aSi:H/Csl(Tl) flat-panel based digital radiography system using a QC chest phantom", Proc. SPIE 5030, Medical Imaging 2003: Physics of Medical Imaging, (5 June 2003); https://doi.org/10.1117/12.480473

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