An analysis of the chest wall motions using the dynamic MRI in healthy elder subjects
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概要
- 論文の詳細を見る
The objective of this study was to compare respiratory motions of the chest wall in the healthy elder subjects (N=5; mean age, 71 years old) with those in healthy young subjects (n=9; mean age, 29 years old). Thirty sequential images (scanning time, 0.4s per image) of dynamic MRI on sagittal and coronal planes were obtained while the subjects were deeply breathing. Lung volume change was simultaneously measured with pneumotachometer. In the elder subjects, dimensions of the middle and posterior parts of the diaphragm were linearly related to instantaneous lung volume. There were poor correlation between motion of the anterior diaphragm and transverse motions of the upper rib-cage and lower rib-cage. The contribution of individual part of the chest wall motion to a unit lung volume change, assessed by slope of the linear regression line, in elder subjects were not significantly different from those in young subjects. Either in the elder or young subjects, the middle and posterior parts of the diaphragm moved coordinately. We conclude that chest wall motion in the healthy elder subjects is not different from that in healthy young people and that middle and posterior parts of the diaphragm act as one functional unit during deep breathing.
- 東海大学の論文
著者
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KOBAYASHI Ichiro
Department of Life Science,Tokyo Institute of Technology
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Yanagimachi Noriharu
Department of Radiology, Tokai University School of Medicine
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Yanagimachi Noriharu
Department Of Radiology Tokai University
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Yanagimachi Noriharu
Department Of Radiology Tokai University School Of Medicine
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KONDO Tetsuri
Department of Medicine, Tokai University Oiso Hospital
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TAGUCHI Yasushi
Department of Medicine, Tokai University School of Medicine
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HAYAMA Naoki
Department of Medicine, Tokai University School of Medicine
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TAJIRI Sakurako
Department of Medicine, Tokai University School of Medicine
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Kobayashi I
Department Of Medicine Tokai University Oiso Hospital
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Kobayashi Intetsu
Mitsubishi Kagaku B.c.l.inc.
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Hayama Naoki
Department Of Medicine Tokai University School Of Medicine
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Kondo T
Department Of Medicine Tokai University Oiso Hospital
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Kondo Tetsuri
Department Of Medicine Tokai University School Of Medicine
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Kondo Tetsuri
Department Of Internal Medicine Tokai University School Of Medicine
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Taguchi Yasushi
Department Of Medicine Tokai University School Of Medicine
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Tajiri Sakurako
Department Of Medicine Tokai University School Of Medicine
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Kondo T
Department Of Respiratory Medicine Tokai University Hachioji Hospital
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Kobayashi Ichiro
Department Of Life Science Tokyo Institute Of Technology
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Tajiri Sakurako
Department Of General Internal Medicine Tokai University School Of Medicine
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