Evaluation of computer-aided detection and dual energy software in detection of peripheral pulmonary embolism on dual-energy pulmonary CT angiography
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Choong Wook Lee & Joon Beom Seo & Jae-Woo Song & Mi-Young Kim & Ha Young Lee & Yang Shin Park & Eun Jin Chae & Yu Mi Jang & Namkug Kim & Bernard Kraus
- چاپ و سال / کشور: 2010
Description
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.
Eur Radiol (2011) 21:54–62 DOI 10.1007/s00330-010-1903-7 Received: 7 March 2010 / Revised: 28 May 2010 / Accepted: 16 June 2010 / Published online: 1 August 2010
