Portal verification using the KODAK ACR 2000 RT storage phosphor plate system and EC films. A semiquantitative comparison

Strahlentherapie und Onkologie : Organ der Deutschen Röntgengesellschaft ... [et al]
Peter GeyerHorst Alheit

Abstract

The suitability of the storage phosphor plate system ACR 2000 RT (Eastman Kodak Corp., Rochester, MN, USA), that is destined for portal verification as well as for portal simulation imaging in radiotherapy, had to be proven by the comparison with a highly sensitive verification film. The comparison included portal verification images of different regions (head and neck, thorax, abdomen, and pelvis) irradiated with 6- and 15-MV photons and electrons. Each portal verification image was done at the storage screen and the EC film as well, using the EC-L cassettes (both: Eastman Kodak Corp., Rochester, MN, USA) for both systems. The soft-tissue and bony contrast and the brightness were evaluated and compared in a ranking of the two compared images. Different phantoms were irradiated to investigate the high- and low-contrast resolution. To account for quality assurance application, the short-time exposure of the unpacked and irradiated storage screen by green and red room lasers was also investigated. In general, the quality of the processed ACR images was slightly higher than that of the films, mostly due to cases of an insufficient exposure to the film. The storage screen was able to verify electron portals even for low electron en...Continue Reading

Citations

Jul 16, 2013·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·U RammC Weiß
Aug 1, 2006·Photomedicine and Laser Surgery
Mar 1, 2011·Radiology and Oncology·Csilla PesznyákPál Zaránd
Feb 19, 2009·Strahlentherapie und Onkologie : Organ der Deutschen Röntgengesellschaft ... [et al]

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