| [A new acquisition method with pacemaker resetting of coronary multidetector-row computed tomography for reduction of radiation dose in patients with pacemaker]. | |
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MedLine Citation:
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PMID: 20145360 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We proposed a new acquisition method of coronary MDCT achieved by pacing rate resetting and/or propranolol or verapamil injection in patients with a pacemaker. Coronary MDCT was undertaken in 57 patients with a pacemaker (DDD: 51, VVI: 6) and in 2975 patients with sinus rhythm as control using Aquilion 64 (Toshiba). Pacing rate was reset to 60 beats per minute (bpm) in DDD, and spontaneous beats were suppressed by propranolol injection. Pacing rate was reset to 70 bpm in atrial fibrillation with VVI, and spontaneous beats were suppressed by verapamil injection. Coronary MDCT was undertaken using as high a beam pitch (BP) as possible. When spontaneous beats were not suppressed, we selected the optimal gantry speed and BP to get the highest temporal resolution. Image quality makes no significant difference between pacemaker and sinus rhythm. When spontaneous beats were completely suppressed (all pacing), mean radiation dose and acquisition time, respectively, decreased by 33.0% and 35.2% in DDD compared with the method recommended by Heart Navi (by Toshiba), and they decreased by 38.1% and 25.9%, respectively, in VVI compared with the method recommended by Heart Navi. We could not estimate coronary stenosis in the proximal right coronary artery by lead artifacts in 30% of DDD pacemakers. In conclusion, the new method is useful for not only reducing radiation dose and acquisition time, but also for maintaining image quality in patients with a pacemaker. |
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Authors:
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Hideyuki Matsutani; Tomonari Sano; Takeshi Kondo; Takako Sekine; Takehiro Arai; Hitomi Morita; Tomohiro Akiyama; Kouichi Hirai; Daisuke Sato; Kei Fukumoto; Shinichi Takase |
Publication Detail:
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Type: Case Reports; English Abstract; Journal Article |
Journal Detail:
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Title: Nihon Hoshasen Gijutsu Gakkai zasshi Volume: 66 ISSN: 0369-4305 ISO Abbreviation: Nihon Hoshasen Gijutsu Gakkai Zasshi Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2010-02-10 Completed Date: 2010-03-23 Revised Date: 2011-07-28 |
Medline Journal Info:
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Nlm Unique ID: 7505722 Medline TA: Nihon Hoshasen Gijutsu Gakkai Zasshi Country: Japan |
Other Details:
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Languages: jpn Pagination: 15-24 Citation Subset: IM |
Affiliation:
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Department of Radiology, Takase Clinic. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Artifacts Coronary Angiography / methods* Female Humans Male Pacemaker, Artificial* Propranolol / administration & dosage Radiation Dosage Tomography, X-Ray Computed / methods* Verapamil / administration & dosage |
| Chemical | |
Reg. No./Substance:
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52-53-9/Verapamil; 525-66-6/Propranolol |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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