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Proceedings Paper

Impact of phosphor luminance noise on the specification of high-resolution CRT displays for medical imaging
Author(s): Edward Muka; Thomas Mertelmeier; Richard M. Slone; Evren Senol
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Paper Abstract

We studied the impact of CRT spot size, phosphor luminance noise and image noise on the specification of high- resolution CRT displays that address the critical needs of general chest radiography. Using Argus CRT simulation software, the design of high-resolution CRTs for the display of adult chest radiographs was studied. The simulated images were printed on a laser printer and evaluated by a board- certified radiologist, RMS. The validity of the Argus simulation was assessed by modeling a 1k X 1k pixels CRT, whose technical parameters were sufficiently well known. Comments from the observer are presented comparing the simulated 2k display and a size-matched replicate of the original screen/film image. Critical parameters like phosphor luminance efficiency and its impact on electron beam size and phosphor luminance noise and its impact on radiographic image noise are discussed. We conclude that Argus CRT simulation software can successfully model the performance of CRTs intended to display medical images permitting consideration of critical parameters without costly manufacturing trials. Based on the 2k CRT simulation results, we suggest that a low luminance noise phosphor such as type p45 be used to ensure that specifying a small spot size would yield the anticipated sharpness improvements.

Paper Details

Date Published: 7 May 1997
PDF: 12 pages
Proc. SPIE 3031, Medical Imaging 1997: Image Display, (7 May 1997); doi: 10.1117/12.273899
Show Author Affiliations
Edward Muka, Mallinckrodt Institute of Radiology/Washington Univ. (United States)
Thomas Mertelmeier, Siemens AG (Germany)
Richard M. Slone, Mallinckrodt Institute of Radiology/Washington Univ. (United States)
Evren Senol, Mallinckrodt Institute of Radiology/Washington Univ. (United States)

Published in SPIE Proceedings Vol. 3031:
Medical Imaging 1997: Image Display
Yongmin Kim, Editor(s)

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