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An observer study for direct comparison of clinical efficacy of electronic to film portal images.

Publication ,  Journal Article
Yin, FF; Rubin, P; Schell, MC; Wynn, R; Raubertas, RF; Uschold, G; Sandhu, A; Nelson, DF
Published in: Int J Radiat Oncol Biol Phys
July 15, 1996

PURPOSE: To directly compare clinical efficacy of electronic to film portal images. METHODS AND MATERIALS: An observer study was designed to compare clinical efficacy of electronic to film portal images acquired using a liquid matrix ion-chamber electronic portal imaging device and a conventional metal screen/film system. Both images were acquired simultaneously for each treatment port and the electronic portal images were printed on gray-level thermal paper. Four radiation oncologists served as observers and evaluated a total of 44 sets of images for four different treatment sites: lung, pelvis, brain, and head/neck. Each set of images included a simulation image, a double-exposure portal film, and video paper prints of electronic portal images. Eight to nine anatomical landmarks were selected from each treatment site. Each observer was asked to rate each landmark in terms of its clinical visibility and to rate the ease of making the pertinent verification decision in the corresponding electronic and film portal images with the aid of the simulation image. RESULTS: Ratings for the visibility of landmarks and for the verification decision of treatment ports were similar for electronic and film images for most landmarks. However, vertebral bodies and several landmarks in the pelvis such as the acetabulum and public symphysis were more visible in the portal film images than in the electronic portal images. CONCLUSION: The visibility of landmarks in electronic portal images is comparable to that in film portal images. Verification of treatment ports based only on electronic portal images acquired using an electronic portal imaging device is generally achievable.

Duke Scholars

Published In

Int J Radiat Oncol Biol Phys

DOI

ISSN

0360-3016

Publication Date

July 15, 1996

Volume

35

Issue

5

Start / End Page

985 / 991

Location

United States

Related Subject Headings

  • Radiotherapy, Computer-Assisted
  • Radiographic Image Enhancement
  • Phantoms, Imaging
  • Oncology & Carcinogenesis
  • Observer Variation
  • 5105 Medical and biological physics
  • 3407 Theoretical and computational chemistry
  • 3211 Oncology and carcinogenesis
  • 1112 Oncology and Carcinogenesis
  • 1103 Clinical Sciences
 

Citation

APA
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ICMJE
MLA
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Yin, F. F., Rubin, P., Schell, M. C., Wynn, R., Raubertas, R. F., Uschold, G., … Nelson, D. F. (1996). An observer study for direct comparison of clinical efficacy of electronic to film portal images. Int J Radiat Oncol Biol Phys, 35(5), 985–991. https://doi.org/10.1016/0360-3016(96)00205-2
Yin, F. F., P. Rubin, M. C. Schell, R. Wynn, R. F. Raubertas, G. Uschold, A. Sandhu, and D. F. Nelson. “An observer study for direct comparison of clinical efficacy of electronic to film portal images.Int J Radiat Oncol Biol Phys 35, no. 5 (July 15, 1996): 985–91. https://doi.org/10.1016/0360-3016(96)00205-2.
Yin FF, Rubin P, Schell MC, Wynn R, Raubertas RF, Uschold G, et al. An observer study for direct comparison of clinical efficacy of electronic to film portal images. Int J Radiat Oncol Biol Phys. 1996 Jul 15;35(5):985–91.
Yin, F. F., et al. “An observer study for direct comparison of clinical efficacy of electronic to film portal images.Int J Radiat Oncol Biol Phys, vol. 35, no. 5, July 1996, pp. 985–91. Pubmed, doi:10.1016/0360-3016(96)00205-2.
Yin FF, Rubin P, Schell MC, Wynn R, Raubertas RF, Uschold G, Sandhu A, Nelson DF. An observer study for direct comparison of clinical efficacy of electronic to film portal images. Int J Radiat Oncol Biol Phys. 1996 Jul 15;35(5):985–991.
Journal cover image

Published In

Int J Radiat Oncol Biol Phys

DOI

ISSN

0360-3016

Publication Date

July 15, 1996

Volume

35

Issue

5

Start / End Page

985 / 991

Location

United States

Related Subject Headings

  • Radiotherapy, Computer-Assisted
  • Radiographic Image Enhancement
  • Phantoms, Imaging
  • Oncology & Carcinogenesis
  • Observer Variation
  • 5105 Medical and biological physics
  • 3407 Theoretical and computational chemistry
  • 3211 Oncology and carcinogenesis
  • 1112 Oncology and Carcinogenesis
  • 1103 Clinical Sciences