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Portrait of Anders Tingberg. Photo

Anders Tingberg

Professor, Principal investigator, Medical physicist, PhD

Portrait of Anders Tingberg. Photo

Comparison of two methods for evaluation of the image quality of lumbar spine radiographs

Author

  • Anders Tingberg
  • C. Herrmann
  • A. Almén
  • Jack Besjakov
  • Sören Mattsson
  • P. Sund
  • B. Lanhede
  • S. Kheddache
  • L.G. Månsson

Summary, in English

Two methods for visual evaluation of image quality of clinical radiographs have been compared. In visual grading analysis (VGA) specified anatomical structures in an image are visually compared with the same structures in a reference image, and in a free-response forced error (FFE) experiment - an extension of conventional ROC (receiver operating characteristics) analysis - the objective is to correctly localise known lesions. The spatial resolution and noise of digitised clinical radiographs of the lumbar spine were altered by image processing, and pathological structures were added to the images for the FFE experiment. The images were printed to film and evaluated by seven European expert radiologists using VGA and FFE. The results of these two different methods showed a very good agreement. In conclusion, VGA methodology can be made as solid as the FFE experiment for evaluating image quality. The simplicity of VGA makes it very suitable for implementation in clinical practice.

Department/s

  • Medical Radiation Physics, Malmö
  • Radiology Diagnostics, Malmö

Publishing year

2000

Language

English

Pages

165-168

Publication/Series

Radiation Protection Dosimetry

Volume

90

Issue

1

Document type

Journal article

Publisher

Oxford University Press

Topic

  • Radiology and Medical Imaging

Status

Published

Research group

  • Medical Radiation Physics, Malmö
  • Radiology Diagnostics, Malmö

ISBN/ISSN/Other

  • ISSN: 1742-3406