Observer variation in bone lesion detection in thoraco-abdominal visceral CT images
Laval-Jeantet, M.; Paxton, L.; Frija, J.; Prêteux, F.
European Journal of Radiology 5(4): 310-312
1985
ISSN/ISBN: 0720-048X PMID: 4085495 Document Number: 244479
This study measured missed bone diagnosis on CT performed for lymph nodes or visceral spread of cancers and lymphomas. A bone-expert reading was compared to that of visceral-cancer oriented observers. From 100 examinations, 65% of bone abnormalities were not described by current reporting of cancer cases. Changes in windowing and contrast of the image produced large variations in CT readings. A slow search with different windowing decreases the false-negative ratio. A fast reading with invariable viewing parameters increases false interpretations, even for experienced radiologists.