HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Horiguchi, J. Articles by Ito, K. Search for Related Content PubMed PubMed Citation Articles by Horiguchi, J. Articles by Ito, K. Social Bookmarking                      What's this? Hotlight (NEW!) What's Hotlight?

Quantification of Coronary Artery Calcium Using Multidetector CT and a Retrospective ECG-Gating Reconstruction Algorithm

¹ Department of Radiology, Hiroshima University School of Medicine, 1-2-3, Kasumi-cho, Minami-ku, Hiroshima, 734-8551, Japan
² Department of Radiology, Mazda Hospital, 2-15, Aosakiminami, Huchu-cho, Aki-gun, Hiroshima, 735-0017, Japan.

OBJECTIVE. The purpose of our study was to evaluate the quality of and motion artifacts on multidetector CT scans and to compare the results with those of and on electron beam CT scans for the assessment of coronary calcium scores.

MATERIALS AND METHODS. First, 20 volunteers were scanned using multidetector CT. We compared the signal-to-noise ratio in the heart, motion artifacts at the heart border, and the highest CT values in the regions of the coronary arteries using single-sector and multisector reconstruction algorithms. Next, 60 patients with coronary calcified deposits underwent both multidetector CT and electron beam CT. We compared coronary calcium scores determined with multidetector CT using the two algorithms (thresholds of 90 and 130 H) with those determined using electron beam CT.

RESULTS. The signal-to-noise ratio was higher and motion artifacts were reduced when we used the multisector algorithm. The highest CT value in the region of the coronary arteries exceeded 90 H in one of 55 arteries on the multisector algorithm images and 17 of 55 arteries on single-sector algorithm images (chi-square test, p < 0.01). In coronary calcium scoring, correlation coefficients ranged from 0.920 to 0.992 (Pearson's product moment) and from 0.932 to 0.969 (Spearman's rank correlation coefficient).

CONCLUSION. Multidetector CT with a retrospective ECG-gating algorithm (multisector reconstruction) produced cardiac images with fewer motion artifacts and showed a high correlation with coronary calcium scores determined using electron beam CT. Therefore, multidetector CT is a potential tool for coronary calcium scoring.

CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				J. Horiguchi, H. Yamamoto, N. Hirai, Y. Akiyama, C. Fujioka, K. Marukawa, H. Fukuda, and K. Ito Variability of repeated coronary artery calcium measurements on low-dose ECG-gated 16-MDCT. Am. J. Roentgenol., July 1, 2006; 187(1): W1 - W6. [Abstract] [Full Text] [PDF]

				J. Horiguchi, Y. Shen, Y. Akiyama, N. Hirai, K. Sasaki, M. Ishifuro, T. Nakanishi, and K. Ito Electron Beam CT Versus 16-MDCT on the Variability of Repeated Coronary Artery Calcium Measurements in a Variable Heart Rate Phantom Am. J. Roentgenol., October 1, 2005; 185(4): 995 - 1000. [Abstract] [Full Text] [PDF]

				J. Horiguchi, H. Yamamoto, Y. Akiyama, N. Hirai, K. Marukawa, H. Fukuda, and K. Ito Variability of Repeated Coronary Artery Calcium Measurements by 16-MDCT with Retrospective Reconstruction Am. J. Roentgenol., June 1, 2005; 184(6): 1917 - 1923. [Abstract] [Full Text] [PDF]

				S. S. Halliburton, A. E. Stillman, M. Lieber, J. M. Kasper, S. A. Kuzmiak, and R. D. White Potential Clinical Impact of Variability in the Measurement of Coronary Artery Calcification with Sequential MDCT Am. J. Roentgenol., February 1, 2005; 184(2): 643 - 648. [Abstract] [Full Text] [PDF]

				M. Yamamuro, E. Tadamura, S. Kubo, H. Toyoda, T. Nishina, M. Ohba, R. Hosokawa, T. Kimura, N. Tamaki, M. Komeda, et al. Cardiac Functional Analysis with Multi-Detector Row CT and Segmental Reconstruction Algorithm: Comparison with Echocardiography, SPECT, and MR Imaging Radiology, February 1, 2005; 234(2): 381 - 390. [Abstract] [Full Text] [PDF]

				T. Schlosser, P. Hunold, A. Schmermund, H. Kuhl, K.-U. Waltering, J. F. Debatin, and J. Barkhausen Coronary Artery Calcium Score: Influence of Reconstruction Interval at 16-Detector Row CT with Retrospective Electrocardiographic Gating Radiology, November 1, 2004; 233(2): 586 - 589. [Abstract] [Full Text] [PDF]

				U. J. Schoepf, C. R. Becker, B. M. Ohnesorge, and E. K. Yucel CT of Coronary Artery Disease Radiology, July 1, 2004; 232(1): 18 - 37. [Abstract] [Full Text] [PDF]

				J. Horiguchi, H. Yamamoto, Y. Akiyama, K. Marukawa, N. Hirai, and K. Ito Coronary Artery Calcium Scoring Using 16-MDCT and a Retrospective ECG-Gating Reconstruction Algorithm Am. J. Roentgenol., July 1, 2004; 183(1): 103 - 108. [Abstract] [Full Text] [PDF]

				A. H. Mahnken, J. E. Wildberger, J. Simon, R. Koos, T. G. Flohr, S. Schaller, and R. W. Gunther Detection of Coronary Calcifications: Feasibility of Dose Reduction with a Body Weight-Adapted Examination Protocol Am. J. Roentgenol., August 1, 2003; 181(2): 533 - 538. [Abstract] [Full Text] [PDF]

				K. Saito, M. Saito, S. Komatu, and K. Ohtomo Real-Time Four-dimensional Imaging of the Heart with Multi-Detector Row CT RadioGraphics, January 1, 2002; (2002) 8. [Abstract] [Full Text]