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  • Tingberg, AndersLund University,Lunds universitet,Medicinsk strålningsfysik, Malmö,Forskargrupper vid Lunds universitet,Medical Radiation Physics, Malmö,Lund University Research Groups (author)

Influence of the characteristic curve on the clinical image quality of lumbar spine and chest radiographs.

  • Article/chapterEnglish2004

Publisher, publication year, extent ...

  • British Institute of Radiology,2004

Numbers

  • LIBRIS-ID:oai:gup.ub.gu.se/58790
  • https://gup.ub.gu.se/publication/58790URI
  • https://lup.lub.lu.se/record/121250URI
  • https://doi.org/10.1259/bjr/22642890DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-23436URI

Supplementary language notes

  • Language:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • The "European Guidelines on Quality Criteria for Diagnostic Radiographic Images" do not address the choice of the film characteristic (H&D) curve, which is an important parameter for the description of a radiographic screen-film system. The image contrast of clinical lumbar spine and chest radiographs was altered by digital image processing techniques, simulating images with different H&D curves, both steeper and flatter than the original. The manipulated images were printed on film for evaluation. Seven experienced radiologists evaluated the clinical image quality by analysing the fulfilment of the European Image Criteria (ICS) and by visual grading analysis (VGA) of in total 224 lumbar spine and 360 chest images. A parallel study of the effect of the H&D curve has also been made using a theoretical model. The contrast (DeltaOD) of relevant anatomical details was calculated, using a Monte Carlo simulation-model of the complete imaging system including a 3D voxel phantom of a patient. Correlations between the calculated contrast and the radiologists' assessment by VGA were sought. The results of the radiologists' assessment show that the quality in selected regions of lumbar spine and chest images can be significantly improved by the use of films with a steeper H&D curve compared with the standard latitude film. Significant (p<0.05) correlations were found between the VGA results and the calculations of the contrast of transverse processes and trabecular details in the lumbar spine vertebrae, and with the contrast of blood vessels in the retrocardiac area of the chest.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Herrmann, C (author)
  • Lanhede, B (author)
  • Almén, A (author)
  • Sandborg, Michael,1961-Östergötlands Läns Landsting,Linköpings universitet,Hälsouniversitetet,Medicinsk radiofysik,Radiofysikavdelningen(Swepub:liu)micsa02 (author)
  • McVey, G (author)
  • Mattsson, SörenLund University,Lunds universitet,Medicinsk strålningsfysik, Malmö,Forskargrupper vid Lunds universitet,Medical Radiation Physics, Malmö,Lund University Research Groups(Swepub:lu)rfa-sma (author)
  • Panzer, W (author)
  • Besjakov, JackLund University,Lunds universitet,Diagnostisk radiologi, Malmö,Forskargrupper vid Lunds universitet,Radiology Diagnostics, Malmö,Lund University Research Groups(Swepub:lu)ront-jbe (author)
  • Månsson, Lars Gunnar,1951Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiofysik,Institute of Selected Clinical Sciences, Department of Radiation Physics(Swepub:gu)xmanla (author)
  • Kheddache, Susanne,1949Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiologi,Institute of Selected Clinical Sciences, Department of Radiology(Swepub:gu)xkhesu (author)
  • Alm-Carlsson, Gudrun,1939-Östergötlands Läns Landsting,Linköpings universitet,Hälsouniversitetet,Medicinsk radiofysik,Radiofysikavdelningen(Swepub:liu)gudal03 (author)
  • Dance, D R (author)
  • Tylén, Ulf,1938Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiologi,Institute of Selected Clinical Sciences, Department of Radiology(Swepub:gu)xtyleu (author)
  • Zankl, M (author)
  • Medicinsk strålningsfysik, MalmöForskargrupper vid Lunds universitet (creator_code:org_t)

Related titles

  • In:The British journal of radiology: British Institute of Radiology77:915, s. 204-150007-12851748-880X

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