| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Original Research |
1 Department of Radiology, Erasmus Medical Center, Dr. Molewaterplein, 40,
Rotterdam 3015GD, The Netherlands.
2 Department of Cardiology, Erasmus Medical Center, Rotterdam, The
Netherlands.
3 DIBIMEL, Section of Radiological Sciences, University of Palermo, Palmero,
Italy.
4 Computed Tomography, Siemens Medical Solutions, Forchheim, Germany.
OBJECTIVE. The objective of our study was to compare diagnostic accuracy of MDCT coronary angiography in a population of patients with mild heart rhythm irregularities before and after editing the ECG.
SUBJECTS AND METHODS. Thirty-eight patients who underwent MDCT
coronary angiography and conventional coronary angiography were enrolled in
the study. The inclusion criterion was the presence of mild heart rhythm
irregularities (i.e., premature beats; atrial fibrillation; mistriggering; or
low heart rate, defined as 40 beats per minute or less) during the scan. All
patients underwent MDCT with the following parameters: 16 detectors;
collimation, 0.75 mm; gantry rotation time, 375 msec; 120 kV; and effective
milliampere-second setting, 500–600. Images were reconstructed in two
settings: before ECG editing and after ECG editing (i.e., arbitrary
modification of temporal windows within the cardiac cycle at the site of mild
heart rhythm irregularities). Data sets were scored for the presence of
significant stenoses (
50% lumen reduction) in coronary segments 2 mm
diameter. The results of the two groups were compared with a McNemar test, and
a p value of less than 0.05 was considered significant.
RESULTS. The sensitivity, specificity, and negative and positive predictive values of MDCT coronary angiography for the detection of significant stenoses before and after ECG editing were 63% (41/65) and 92% (78/85); 97% (251/260) and 96% (305/317); 87% (62/71) and 87% (81/93); 91% (251/275) and 97% (305/313), respectively (p < 0.05). The proportion of nonassessable segments was reduced from 17% (70/416) before ECG editing to 2% (10/416) after.
CONCLUSION. ECG editing significantly improves diagnostic accuracy in a selected population of patients with mild heart rate irregularities.
Keywords: arteriography • coronary angiography • ECG editing • heart rhythm • MDCT angiography
CiteULike 
Complore 
Connotea 
Del.icio.us 
Digg 
Reddit 
Technorati What's this?
This article has been cited by other articles:
|
|
 |
|
  H. Matsumoto, T. Kondo, S. Watanabe, R. Kikumoto, T. Shimada, Y. Hiraoka, and K. Ueda ECG-Edited Middiastolic Phase Reconstruction Improves Image Quality at 64-MDCT Coronary Angiography of Patients with Atrial Fibrillation Am. J. Roentgenol., December 1, 2008; 191(6): 1659 - 1666. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 N. Hirai, J. Horiguchi, C. Fujioka, M. Kiguchi, H. Yamamoto, N. Matsuura, T. Kitagawa, H. Teragawa, N. Kohno, and K. Ito Prospective versus Retrospective ECG-gated 64-Detector Coronary CT Angiography: Assessment of Image Quality, Stenosis, and Radiation Dose Radiology, August 1, 2008; 248(2): 424 - 430. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. Horiguchi, M. Kiguchi, C. Fujioka, Y. Shen, R. Arie, K. Sunasaka, and K. Ito Radiation Dose, Image Quality, Stenosis Measurement, and CT Densitometry Using ECG-Triggered Coronary 64-MDCT Angiography: A Phantom Study Am. J. Roentgenol., February 1, 2008; 190(2): 315 - 320. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. M. Feuchtner, T. Schachner, J. Bonatti, G. J. Friedrich, P. Soegner, A. Klauser, and D. z. Nedden Diagnostic Performance of 64-Slice Computed Tomography in Evaluation of Coronary Artery Bypass Grafts Am. J. Roentgenol., September 1, 2007; 189(3): 574 - 580. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. K. Attili and P. N. Cascade CT and MRI of Coronary Artery Disease:Evidence-Based Review. Am. J. Roentgenol., December 1, 2006; 187(6 Suppl): S483 - S499. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
