Evaluation of radiolucency condition in total hip arthroplasty: A statistical comparison of the diagnostic capability of digitised image vs conventional X-ray film

M. Testoni, F. Baruffaldi, P. Mattioli, A. Sudanese, S. Terzi, G. Barbanti-Brodano, A. Toni

Research output: Contribution to journalArticlepeer-review

Abstract

This work analyses the diagnostic capability of radiographic images taken from patients with total hip arthroplasty and visualised on monitor. Images were obtained with digital acquisition of conventional X-ray films. The investigated pathology is the absence of direct contact between bone and prosthesis (radiolucency). Three senior orthopaedists defined the diagnostic 'truth' on well-defined regions of interest on 22 conventional X-ray films of total hip arthroplasty, obtaining a total of 110 reference ratings. Films were digitised by use of an X-ray scanner. Four readers evaluated the X-ray images, applying conventional and monitor visualisation. To show any difference between ratings on film and ratings on monitor a sensitivity, specificity and accuracy study jointly with a receiver operating characteristics (ROC) study were performed for each reader and for all combined readings. The intra-observer reproducibility of the radiographic protocol was equal to 87% and the inter-observer one was in the range 85-92%. The sensitivity, specificity and accuracy study together with the ROC analysis did not show significant differences between the two evaluation modes. The evaluation of radiolucency from digitised X-ray films visualised on a monitor resulted statistically comparable with the conventional evaluation on X-ray films.

Original languageEnglish
Pages (from-to)601-608
Number of pages8
JournalEuropean Radiology
Volume10
Issue number4
Publication statusPublished - 2000

Keywords

  • Digital imaging
  • Hip arthroplasty
  • Radiolucency
  • ROC analysis
  • Telemedicine

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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