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Proceedings Paper

40 x 30 cm flat-panel imager for angiography, R&F, and cone-beam CT applications
Author(s): Richard E. Colbeth; Sarah J. Boyce; Robert Fong; Keith W. Gray; Richard A. Harris; Isaias D. Job; Ivan P. Mollov; Boris Nepo; John M. Pavkovich; Nima Taie-Nobarie; Edward J. Seppi; Edward G. Shapiro; Michael D. Wright; Chris Webb; Jiann Michael Yu
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Paper Abstract

Preliminary results are presented from the PaxScan 4030A; a 40x30cm, 2048 x 1536 landscape, flat panel imager, with 194um pixel pitch. This imager builds on our experience with the PaxScan 2520, a 127um real-time flat panel detector capable of both high-resolution radiography and low dose fluoroscopy. While the PS2520 has been applied in C-arms, neuroangiography, cardiac imaging and small area radiographic units, the larger active area of the PaxScan 4030A addresses the broader applications of angiography, general R&F and cone-beam CT. The PaxScan 4030A has the same electrical and software interfaces as the PS2520; however, a number of innovations have been incorporated into the 4030A to increase its versatility. The most obvious change is that the data interface between the receptor and command processor has been reduced to one very flexible and thin fiber-optic cable. A second new feature for the 4030A is the use of split datalines. Split datalines facilitate scanning the two halves of the array in parallel, cutting the readout time in half and increasing the time window for pulsed x-ray delivery to 15ms at 30fps. In addition, split datalines result in lower noise, which, coupled with the larger signal of the 194um pixels, enables high quality imaging at lower fluoroscopy doses rates.

Paper Details

Date Published: 28 June 2001
PDF: 9 pages
Proc. SPIE 4320, Medical Imaging 2001: Physics of Medical Imaging, (28 June 2001); doi: 10.1117/12.430917
Show Author Affiliations
Richard E. Colbeth, Varian Medical Systems (United States)
Sarah J. Boyce, Varian Medical Systems (United States)
Robert Fong, Varian Medical Systems (United States)
Keith W. Gray, Varian Medical Systems (United States)
Richard A. Harris, Varian Medical Systems (United States)
Isaias D. Job, Varian Medical Systems (United States)
Ivan P. Mollov, Varian Medical Systems (United States)
Boris Nepo, Varian Medical Systems (United States)
John M. Pavkovich, Varian Medical Systems (United States)
Nima Taie-Nobarie, Varian Medical Systems (United States)
Edward J. Seppi, Varian Medical Systems (United States)
Edward G. Shapiro, Varian Medical Systems (United States)
Michael D. Wright, Varian Medical Systems (United States)
Chris Webb, Varian Medical Systems (United States)
Jiann Michael Yu, Varian Medical Systems (United States)


Published in SPIE Proceedings Vol. 4320:
Medical Imaging 2001: Physics of Medical Imaging
Larry E. Antonuk; Martin Joel Yaffe, Editor(s)

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