TY - GEN
T1 - Design and optimization of a digital radiographic system with emphasis on TDI CCD scanning mammography
AU - Court, Laurence E.
AU - Ho, Ian
AU - Speller, Robert D.
AU - Martinex-Davalos, A.
AU - Miller, D. J.
AU - Hopkinson, Gordon R.
AU - Cutter, Michael A.
AU - Allen, Brian P.
N1 - Copyright:
Copyright 2004 Elsevier B.V., All rights reserved.
PY - 1994
Y1 - 1994
N2 - This paper describes the requirements and constraints involved in the design of a digital scanning mammography system. The SNR model of Muntz is used to assess the influence of detector size and detected scatter-to-primary ratio on the detectability of microcalcifications in a breast phantom, and hence to consider the design of an optimized system. The effects of patient dose, exposure time and various technological constraints, such as x-ray tube power limits, maximum scanning speed and system MTF, are also discussed. It is demonstrated that the combined use of an air gap between the patient and the detector and a wider scanning slot can give the same scatter-to-primary ratio as a significantly smaller slot, while reducing the x-ray tube load. It is also demonstrated that, to some extent, the tube power constraints can be overcome by using higher kVp, less added filtration and a smaller source to patient distance.
AB - This paper describes the requirements and constraints involved in the design of a digital scanning mammography system. The SNR model of Muntz is used to assess the influence of detector size and detected scatter-to-primary ratio on the detectability of microcalcifications in a breast phantom, and hence to consider the design of an optimized system. The effects of patient dose, exposure time and various technological constraints, such as x-ray tube power limits, maximum scanning speed and system MTF, are also discussed. It is demonstrated that the combined use of an air gap between the patient and the detector and a wider scanning slot can give the same scatter-to-primary ratio as a significantly smaller slot, while reducing the x-ray tube load. It is also demonstrated that, to some extent, the tube power constraints can be overcome by using higher kVp, less added filtration and a smaller source to patient distance.
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M3 - Conference contribution
AN - SCOPUS:0028748266
SN - 0819414581
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 298
EP - 309
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Shaw, Rodney
PB - Publ by Society of Photo-Optical Instrumentation Engineers
T2 - Medical Imaging 1994: Physics of Medical Imaging
Y2 - 13 February 1994 through 14 February 1994
ER -