Virtual colonoscopy: effect of computer-assisted detection (CAD) on radiographer performance.
Aim: To investigate the effect of a virtual colonoscopy (VC) computed-assisted detection (CAD) system on polyp detection by trained radiographers. Materials and Methods: Four radiographers trained in VC interpretation and utilization of CAD systems read a total of 62 endoscopically validated VC exam...
| Published in: | Clinical Radiology Vol. 63; no. 5; pp. 549 - 557 |
|---|---|
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
| Format: | research Journal Article |
| Published: |
Elsevier B.V.
May2008
|
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105809559&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105809559 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00099260 23Q jtl: Clinical Radiology issn: 00099260 maglogo: N pubinfo: dt: May2008 vid: 63 iid: 5 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 105809559 NLM18374719 2009922180 10.1016/j.crad.2007.11.006 NLM18374719 105809559 ppf: 549 ppct: 8 formats: tig: atl: Virtual colonoscopy: effect of computer-assisted detection (CAD) on radiographer performance. aug: au: Burling D Moore A Marshall M Weldon J Gillen C Baldwin R Smith K Pickhardt P Honeyfield L Taylor S Burling, D Moore, A Marshall, M Weldon, J Gillen, C Baldwin, R Smith, K Pickhardt, P J Pickhardt, P Honeyfield, L affil: St Mark's Hospital, Harrow, Middlesex, UK sug: subj: Colonic Polyps Radiography Colonography, Computed Tomographic Methods Medical Staff, Hospital Standards Radiographic Image Interpretation, Computer-Assisted Clinical Competence Diagnostic Imaging Reproducibility of Results Retrospective Design Human ab: Aim: To investigate the effect of a virtual colonoscopy (VC) computed-assisted detection (CAD) system on polyp detection by trained radiographers. Materials and Methods: Four radiographers trained in VC interpretation and utilization of CAD systems read a total of 62 endoscopically validated VC examinations containing 150 polyps (size range 5-50mm) in four sessions, recording any polyps found and the examination interpretation time, first without and then with the addition of CAD as a "second reader". After a temporal separation of 6 weeks to reduce recall bias, VC examinations were re-read using "concurrent reader" CAD. Interpretation times, polyp detection, and number of false-positives were compared between the different reader paradigms using paired t and paired exact tests. Results: Overall, use of "second reader" CAD significantly improved polyp detection by 12% (p<0.001, CI 6%,17%)) from 48 to 60%. There was no significant improvement using CAD as a concurrent reader (p=0.20; difference of 7%, CI -3%, 16%) and no significant overall difference in recorded false-positives with second reader or concurrent CAD paradigms compared with unassisted reading (p=0.25 and 0.65, respectively). The mean interpretation time was 21.7 min for unassisted reading, 29.6 (p<0.001) min for second reader and 19.1 min (p=0.12) for concurrent reading paradigms. Conclusion: CAD, when used as a second reader, can significantly improve radiographer reading performance with only a moderate increase in interpretation times. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|