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Portrait of Anders Tingberg. Photo

Anders Tingberg

Associate professor

Portrait of Anders Tingberg. Photo

Detectability of pathological lesions in lumbar spine radiography

Author

  • Anders Tingberg
  • M. Båth
  • Mark Ruschin
  • Anna Grahn
  • Jack Besjakov
  • S. Börjesson
  • M. Håkansson
  • Sören Mattsson
  • L.G. Månsson

Summary, in English

Thirty images with added simulated pathological lesions at two different dose levels (100% and 10% dose) were evaluated with the free-response forced error experiment by nine experienced radiologists. The simulated pathological lesions present in the images were classified according to four different parameters: the position within the lumbar spine, possibility to perform a symmetrical (left-right) comparison, the lesion contrast, and the complexity of the surrounding background where the lesion was situated. The detectability of each lesion was calculated as the fraction of radiologists who successfully detected the lesion before a false positive error was made. The influence of each of the four parameters on lesion detectability was investigated. The results of the study show that the influence of lesion contrast is the most important factor for detectability. Since the dose level had a limited effect on detectability, large dose savings can be made without reducing the detectability of pathological lesions in lumbar spine radiography.

Department/s

  • Medical Radiation Physics, Malmö
  • Department of Translational Medicine

Publishing year

2005

Language

English

Pages

518-526

Publication/Series

Proceedings of SPIE, the International Society for Optical Engineering

Volume

5749

Document type

Conference paper

Publisher

SPIE

Topic

  • Radiology, Nuclear Medicine and Medical Imaging

Conference name

Medical Imaging 2005: Image Perception, Observer Performance, and Technology Assessment

Conference date

2005-02-15

Conference place

San Diego, CA, United States

Status

Published

Research group

  • Medical Radiation Physics, Malmö

ISBN/ISSN/Other

  • ISBN: 9780819457196