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Portrait of Anders Tingberg. Photo

Anders Tingberg

Associate professor

Portrait of Anders Tingberg. Photo

Demonstration of correlations between clinical and physical image quality measures in chest and lumbar spine screen-film radiography

Author

  • M Sandborg
  • Anders Tingberg
  • D R Dance
  • B Lanhede
  • A Almen
  • G McVey
  • P Sund
  • S Kheddache
  • Jack Besjakov
  • Sören Mattsson
  • L G Månsson
  • G Alm Carlsson
Show all

Summary, in English

The ability to predict clinical image quality from physical measures is useful for optimization in diagnostic radiology. In this work, clinical and physical assessments of image quality are compared and correlations between the two are derived. Clinical assessment has been made by a group of expert radiologists who evaluated fulfillment of the European image criteria for chest and lumbar spine radiography using two scoring methods: image criteria score (ICS) and visual grading analysis score (VGAS). Physical image quality measures were calculated using a Monte Carlo simulation model of the complete imaging system. This model includes a voxelized male anatomy and was used to calculate contrast and signal-to-noise ratio of various important anatomical details and measures of dynamic range. Correlations between the physical image quality measures on the one hand and the ICS and VGAS on the other were sought. 16 chest and 4 lumbar spine imaging system configurations were compared in frontal projection. A statistically significant correlation with clinical image quality was found in chest posteroanterior radiography for the contrast of blood vessels in the retrocardiac area and a measure of useful dynamic range. In lumbar spine anteroposterior radiography, a similar significant correlation with clinical image quality was found between the contrast and signal-to-noise ratio of the trabecular structures in the L1-L5 vertebrae. The significant correlation shows that clinical image quality can, at least in some cases, be predicted from appropriate measures of physical image quality.

Department/s

  • Medical Radiation Physics, Malmö
  • Radiology Diagnostics, Malmö

Publishing year

2001

Language

English

Pages

520-528

Publication/Series

British Journal of Radiology

Volume

74

Issue

882

Document type

Journal article

Publisher

British Institute of Radiology

Topic

  • Radiology, Nuclear Medicine and Medical Imaging

Status

Published

Research group

  • Medical Radiation Physics, Malmö
  • Radiology Diagnostics, Malmö

ISBN/ISSN/Other

  • ISSN: 1748-880X