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Göteborgs universitets publikationer

Detectability of pathological lesions in lumbar spine radiography

Författare och institution:
A. Tingberg (-); Magnus Båth (Institutionen för särskilda specialiteter, Avdelningen för radiofysik); M. Ruschin (-); A. Grahn (-); J. Besjakov (-); S. Börjesson (-); Markus Håkansson (Institutionen för särskilda specialiteter, Avdelningen för radiofysik); S. Mattsson (-); Lars Gunnar Månsson (Institutionen för särskilda specialiteter, Avdelningen för radiofysik)
Publicerad i:
Progress in Biomedical Optics and Imaging - Proceedings of SPIE, 5749 s. 518-526
ISSN:
1605-7422
Publikationstyp:
Artikel, övrig vetenskaplig
Publiceringsår:
2005
Språk:
engelska
Fulltextlänk:
Sammanfattning (abstract):
Thirty images with added simulated pathological lesions at two different dose levels (100% and 10% dose) were evaluated with the free-response forced error experiment by nine experienced radiologists. The simulated pathological lesions present in the images were classified according to four different parameters: the position within the lumbar spine, possibility to perform a symmetrical (left-right) comparison, the lesion contrast, and the complexity of the surrounding background where the lesion was situated. The detectability of each lesion was calculated as the fraction of radiologists who successfully detected the lesion before a false positive error was made. The influence of each of the four parameters on lesion detectability was investigated. The results of the study show that the influence of lesion contrast is the most important factor for detectability. Since the dose level had a limited effect on detectability, large dose savings can be made without reducing the detectability of pathological lesions in lumbar spine radiography.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
MEDICIN OCH HÄLSOVETENSKAP ->
Klinisk medicin ->
Radiologi och bildbehandling ->
Radiologi
MEDICIN OCH HÄLSOVETENSKAP ->
Klinisk medicin ->
Radiologi och bildbehandling ->
Radiofysik
Nyckelord:
Anatomical background , Detectability , Lumbar spine radiography , Pathological lesions
Postens nummer:
235494
Posten skapad:
2016-04-28 17:37

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