Compression Belt for Navigator-triggered trueFISP Whole-heart Coronary Magnetic Resonance Angiography : Study in Healthy Volunteers
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概要
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Purpose: To evaluate in healthy volunteers the usefulness of an abdominal compression belt in reducing acquisition time by stabilizing respiratory motion during whole-heart coronary magnetic resonance angiography (WHCMRA) using conventional navigator triggering. Methods: In 10 healthy volunteers, we performed free-breathing 3-dimensional segmented true fast imaging with steady-state precession (trueFISP) WHCMRA using conventional navigator triggering without motion-adapted gating. We acquired images with the abdominal compression belt rolled tightly around the upper abdomen and without the belt. We compared image acquisition time, navigator efficiency, and visible length of coronary arteries using paired t-test and subjective image quality on a 4-point scale (1, poor; 4, excellent) using Wilcoxon signed-rank test. Results: There were no statistically significant differences for mean acquisition time (11.5±5.0 vs. 9.3±2.4 min, P=0.150); navigator efficiency (38.7±13.6 vs. 42.8±11.0%, P=0.336); mean overall visible length of the coronary arteries (99.7±22.7 vs. 105.0±16.5 mm, P=0.530); or mean overall subjective image quality (2.5 vs. 2.7, P=0.297) between results obtained with and without the abdominal compression belt. Conclusion: In this small group of healthy volunteers, the use of an abdominal compression belt did not reduce image acquisition time or improve image quality in trueFISP WHCMRA using conventional navigator triggering; however, the techniques feasibility requires additional consideration using other navigator-triggering methods for patients with irregular respiratory cycles.
- 日本磁気共鳴医学会の論文
- 2008-06-01
著者
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MORITA Satoru
Department of Radiology, Tokyo Womens Medical University Medical Center East
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OHNISHI Takahiro
Siemens-Asahi Medical Technologies
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UENO Eiko
Department of Radiology, Tokyo Women's Medical University Medical Center East
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SUZUKI Kazufumi
Department of Radiology, Tokyo Women's Medical University Medical Center East
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MACHIDA Haruhiko
Department of Radiology, Tokyo Women's Medical University Medical Center East
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FUJIMURA Mikihiko
Department of Radiology, Tokyo Women's Medical University Medical Center East
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OHNISHI Takahiro
Application group, Siemens-Asahi Medical Technologies
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Machida Haruhiko
Department Of Radiology Tokyo Women's Medical University Medical Center East
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Suzuki Kazufumi
Department Of Radiology Tokyo Women's Medical University Medical Center East
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Ueno Eiko
Department Of Radiology Tokyo Women's Medical University Medical Center East
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Ueno Eiko
Department Of Pharmacology Kyoto Prefectural University Of Medicine
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Fujimura Mikihiko
Department Of Radiology Tokyo Women's Medical University Medical Center East
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Morita Satoru
Department Of Gastroenterology Hamamatsu Medical Center Hamamatsu University School Of Medicine
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Suzuki Kazufumi
Department Of Radiology Tokyo Women's Medical University
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IMURA Chiaki
Siemens-Asahi Medical Technologies
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Fujimura Mikihiko
Department Of Radiology Tokyo Women's Medical University
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Ohnishi Takahiro
Application Group Siemens-asahi Medical Technologies
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Morita Satoru
Department Of Cardiovascular Surgery National Hospital Organization Higashihiroshima Medical Center
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Suzuki Kazufumi
Department of Physics, Yamagata University, Yamagata 990-8560, Japan
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