Radiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published online before print September 30, 2004, 10.1148/radiol.2332030953
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
2332030953v1
233/2/590    most recent
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Lu, B.
Right arrow Articles by Budoff, M. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lu, B.
Right arrow Articles by Budoff, M. J.
(Radiology 2004;233:590-595.)
© RSNA, 2004

Technical Developments

Baseline Heart Rate–adjusted Electrocardiographic Triggering for Coronary Artery Electron-Beam CT Angiography1

Bin Lu, MD, Nan Zhuang, MD, Song-Shou Mao, MD, Janis Child, RT, Sivi Carson, RT and Matthew J. Budoff, MD

1 From the Department of Radiology, Cardiovascular Institute and FuWai Hospital, Peking Union Medical College, and Chinese Academy of Medical Sciences, 167 Bei-Li-Shi St, Beijing 100037, China (B.L., N.Z.); and Department of Medicine, Division of Cardiology, Harbor-UCLA Medical Center and Saint John’s Cardiovascular Research Center, Torrance, Calif (J.C., S.S.M., S.C., M.J.B.). Received June 17, 2003; revision requested August 27; final revision received March 4, 2004; accepted May 12. Address correspondence to B.L. (e-mail: blu@vip.sina.com).

Conventional electrocardiographic (ECG) triggering (group 1, 53 patients) was compared with baseline heart rate–adjusted ECG triggering (group 2, 54 patients) for coronary artery electron-beam computed tomographic (CT) angiography. CT angiographic data sets were compared blindly with conventional angiograms according to segment. Nonassessability of coronary artery segments was reduced from 35% in group 1 to 13% in group 2 (P < .001). More motion-free coronary artery images were obtained in group 2 than in group 1, especially in the right coronary artery (95% vs 67%, P < .001). Overall sensitivity and specificity for luminal stenosis (≥50%) were 69% and 82% (group 1) and 76% and 92% (group 2) (P > .05 and P < .001, respectively). Baseline heart rate–adjusted ECG triggering improves image quality at coronary artery CT angiography for detection of coronary artery disease.

© RSNA, 2004

Index terms: Computed tomography (CT), angiography, 54.12116 • Computed tomography (CT), electron beam • Computed tomography (CT), image quality • Coronary vessels, stenosis or obstruction, 54.76






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
RADIOLOGY RADIOGRAPHICS RSNA JOURNALS ONLINE
Copyright © 2004 by the Radiological Society of North America.