[ROC comparison of visualization of hand fractures using digital and conventional techniques]

Rofo. 1997 Sep;167(3):274-9. doi: 10.1055/s-2007-1015531.
[Article in German]

Abstract

Purpose: To compare the accuracy of digital luminescence radiography (DLR) and conventional film-screen radiography (FSR) in diagnosing fractures.

Material and method: Both conventional and digital radiographs were acquired from a consecutive series of 57 patients with suspected wrist or hand fractures. The digital images were obtained with a 30% dose reduction. A ROC-analysis (receiver-operating characteristics) was performed.

Results: The area under the curve was 0.89 for conventional FSR, 0.93 for DLR, "gray scale" and 0.94 for DLR, "edge enhanced".

Conclusions: Although its spatial resolution is lower, DLR provided better results than conventional FSR, when contrast processing algorithms were optimised for the specific clinical question. The edge-enhanced version was superior to the non-edge enhanced version. The reason for this seems to be the higher contrast resolution of DLR compared to FSR.

Publication types

  • Comparative Study

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Diagnosis, Differential
  • Female
  • Fractures, Bone / diagnostic imaging*
  • Hand Injuries / diagnostic imaging*
  • Humans
  • Luminescent Measurements
  • Male
  • Middle Aged
  • ROC Curve*
  • Radiographic Image Enhancement*