| Electrocardiography-triggered high-resolution CT for reducing cardiac motion artifact: evaluation of the extent of ground-glass attenuation in patients with idiopathic pulmonary fibrosis. | |
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MedLine Citation:
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PMID: 18085403 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: The aim of this study was to evaluate the decreasing of cardiac motion artifact and whether the extent of ground-glass attenuation of idiopathic pulmonary fibrosis (IPF) was accurately assessed by electrocardiography (ECG)-triggered high-resolution computed tomography (HRCT) by 0.5-s/rotation multidetector-row CT (MDCT). MATERIALS AND METHODS: ECG-triggered HRCT were scanned at the end-diastolic phase by a MDCT scanner with the following scan parameters; axial four-slice mode, 0.5 mm collimation, 0.5-s/rotation, 120 kVp, 200 mA/rotation, high-frequency algorithm, and half reconstruction. In 42 patients with IPF, both conventional HRCT (ECG gating(-), full reconstruction) and ECG-triggered HRCT were performed at the same levels (10-mm intervals) with the above scan parameters. The correlation between percent diffusion of carbon monoxide of the lung (%DLCO) and the mean extent of ground-glass attenuation on both conventional HRCT and ECG-triggered HRCT was evaluated with the Spearman rank correlation coefficient test. RESULTS: The correlation between %DLCO and the mean extent of ground-glass attenuation on ECG-triggered HRCT (observer A: r = -0.790, P < 0.0001; observer B: r = -0.710, P < 0.0001) was superior to that on conventional HRCT (observer A: r = -0.395, P < 0.05; observer B: r = -0.577, P = 0.002) for both observers. CONCLUSION: ECG-triggered HRCT by 0.5 s/rotation MDCT can reduce the cardiac motion artifact and is useful for evaluating the extent of ground-glass attenuation of IPF. |
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Authors:
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Motoko Nishiura; Takeshi Johkoh; Shuji Yamamoto; Osamu Honda; Takenori Kozuka; Mitsuhiro Koyama; Noriyuki Tomiyama; Seiki Hamada; Takamichi Murakami; Takashi Matsumoto; Yoshifumi Narumi; Hironobu Nakamura |
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Publication Detail:
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Type: Journal Article Date: 2007-12-25 |
Journal Detail:
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Title: Radiation medicine Volume: 25 ISSN: 0288-2043 ISO Abbreviation: Radiat Med Publication Date: 2007 Dec |
Date Detail:
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Created Date: 2007-12-18 Completed Date: 2008-03-07 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8412264 Medline TA: Radiat Med Country: Japan |
Other Details:
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Languages: eng Pagination: 523-8 Citation Subset: IM |
Affiliation:
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Division of Health Science, Osaka University Graduate School of Medicine, Suita, Japan. nishiura@butsuryo.ac.jp |
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Algorithms Artifacts Electrocardiography* Female Humans Male Middle Aged Pulmonary Fibrosis / radiography* Tomography, X-Ray Computed / methods* |
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