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Evaluation of computer-aided detection and dual energy software in detection of peripheral pulmonary embolism on dual-energy pulmonary CT angiography.

Abstract：

PURPOSE:To evaluate the sensitivity of computer-aided detection(CAD) and dual-energy software('Lung PBV', 'Lung Vessels') for detecting peripheral pulmonary embolism(PE). MATERIALS AND METHODS:Between Jan-2007 and Jan-2008, 309 patients underwent dual-energy CT angiography(DECTA) for the evaluation of suspected PE. Among them, 37 patients were retrospectively selected; 21 with PE at segmental-or-below levels and 16 without PE according to clinical reports. A standard computer assisted detection (CAD) package and two new types of software('Lung PBV', 'Lung Vessels') were applied on a dedicated workstation. This resulted in four alternative tests for detecting PE: DECTA alone and DECTA with CAD, 'Lung Vessels' and 'Lung PBV'. Two radiologists independently read all cases at different reading sessions. Two thoracic radiologists set the reference standard by combining all information from DECTA and software. The sensitivity of detection for all, segmental and subsegmental-or-below PE were assessed. RESULTS:The reference standard contained 136 PE(segmental 65, subsegmental-or-below 71). With DECTA alone, the sensitivity of detection for all, segmental and subsegmental-or-below pulmonary arteries was 54.5%/73.7%/34.4%; DECTA with CAD, 57.8%/76.8%/37.9%; DECTA with 'Lung PBV', 61.1%/79.9%/41.4%; DECTA with 'Lung Vessels', 64.0%/78.3%/48.5% respectively. CONCLUSION:The use of CAD, Lung Vessels and Lung PBV shows improved capability to detect peripheral PE.

journal_name

Eur Radiol

journal_title

European radiology

authors

Lee CW,Seo JB,Song JW,Kim MY,Lee HY,Park YS,Chae EJ,Jang YM,Kim N,Krauss B

doi

10.1007/s00330-010-1903-7

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

54-62

issue

1

eissn

0938-7994

issn

1432-1084

journal_volume

21

pub_type

杂志文章

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