Computer-assisted detection of pulmonary embolism: evaluation of pulmonary CT angiograms performed in an on-call setting.
Purpose: The purpose of the study was to assess the stand-alone performance of computer-assisted detection (CAD) for evaluation of pulmonary CT angiograms (CTPA) performed in an on-call setting.Methods: In this institutional review board-approved study, we retrospectively included 292 consecutive CT...
| Published in: | European Radiology Vol. 20; no. 4; pp. 801 - 807 |
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| Main Authors: | , , , , , , , , , |
| Format: | research Journal Article |
| Published: |
Springer Nature
Apr2010
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105143392&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105143392 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Apr2010 vid: 20 iid: 4 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 105143392 48464424 NLM19862534 2010592179 10.1007/s00330-009-1628-7 NLM19862534 PMC2835722 105143392 ppf: 801 ppct: 6 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Computer-assisted detection of pulmonary embolism: evaluation of pulmonary CT angiograms performed in an on-call setting. aug: au: Wittenberg R Peters JF Sonnemans JJ Prokop M Schaefer-Prokop CM Wittenberg, Rianne Peters, Joost F Sonnemans, Jeroen J Prokop, Mathias Schaefer-Prokop, Cornelia M affil: Department of Radiology, Academic Medical Centre, Amsterdam, The Netherlands sug: subj: Health Care Delivery Statistics and Numerical Data Angiography Statistics and Numerical Data Information Science Methods Pulmonary Embolism Epidemiology Pulmonary Embolism Radiography Radiographic Image Interpretation, Computer-Assisted Methods Tomography, X-Ray Computed Statistics and Numerical Data Adolescence Adult Aged Aged, 80 and Over Algorithms Artificial Intelligence Female Human Male Middle Age Netherlands Radiographic Image Enhancement Methods Reproducibility of Results Sensitivity and Specificity Young Adult Adolescent: 13-18 years Adult: 19-44 years Aged: 65+ years Aged, 80 & over Middle Aged: 45-64 years Female Male ab: Purpose: The purpose of the study was to assess the stand-alone performance of computer-assisted detection (CAD) for evaluation of pulmonary CT angiograms (CTPA) performed in an on-call setting.Methods: In this institutional review board-approved study, we retrospectively included 292 consecutive CTPA performed during night shifts and weekends over a period of 16 months. Original reports were compared with a dedicated CAD system for pulmonary emboli (PE). A reference standard for the presence of PE was established using independent evaluation by two readers and consultation of a third experienced radiologist in discordant cases.Results: Original reports had described 225 negative studies and 67 positive studies for PE. CAD found PE in seven patients originally reported as negative but identified by independent evaluation: emboli were located in segmental (n = 2) and subsegmental arteries (n = 5). The negative predictive value (NPV) of the CAD algorithm was 92% (44/48). On average there were 4.7 false positives (FP) per examination (median 2, range 0-42). In 72% of studies <or=5 FP were found, 13% of studies had >or=10 FP.Conclusion: CAD identified small emboli originally missed under clinical conditions and found 93% of the isolated subsegmental emboli. On average there were 4.7 FP per examination. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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