2019年12月
Temporal subtraction of computed tomography images improves detectability of bone metastases by radiology residents.
European radiology
- 巻
- 29
- 号
- 12
- 開始ページ
- 6439
- 終了ページ
- 6442
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1007/s00330-019-06314-5
- 出版者・発行元
- SPRINGER
OBJECTIVE: Temporal subtraction of CT (TS) images improves detection of newly developed bone metastases (BM). We sought to determine whether TS improves detection of BM by radiology residents as well. METHODS: We performed an observer study using a previously reported dataset, consisting of 60 oncology patients, each with previous and current CT images. TS images were calculated using in-house software. Four residents independently interpreted twice the 60 sets of CT images, without and with TS. They identified BM by marking suspicious lesions likely to be BM. Lesion-based sensitivity and number of false positives per patient were calculated. Figure-of-merit (FOM) was calculated. Detectability of BM, with and without TS, was compared between radiology residents and board-certified radiologists, as published previously. RESULTS: FOM of residents significantly improved by implementing TS (p value < 0.0001). Lesion-based sensitivity, false positives per patients, and FOM were 40.8%, 0.121, and 0.657, respectively, without TS, and 58.1%, 0.0958, and 0.796, respectively, with TS. These findings were comparable with the previously published values for board-certified radiologists without TS (58.0%, 0.19, and 0.758, respectively). CONCLUSION: The detectability of BM by residents improved markedly by implementing TS and reached that of board-certified radiologists without TS. KEY POINTS: • Detectability of bone metastases on CT by residents improved significantly when using temporal subtraction of CT (TS). • Detections by residents with TS and board-certified radiologists without TS were comparable. • TS is useful for residents as it is for board-certified radiologists.
- リンク情報
-
- DOI
- https://doi.org/10.1007/s00330-019-06314-5
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/31273458
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000500979400006&DestApp=WOS_CPL
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85068854713&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85068854713&origin=inward
- ID情報
-
- DOI : 10.1007/s00330-019-06314-5
- ISSN : 0938-7994
- eISSN : 1432-1084
- PubMed ID : 31273458
- SCOPUS ID : 85068854713
- Web of Science ID : WOS:000500979400006