Dependence of Transverse Relaxation Time T_2 of Biologic Tissues on the Interpulse Delay Time in Carr-Purcell-Meiboom-Gill (CPMG) Measurements
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概要
- 論文の詳細を見る
To determine the transverse relaxation time (T_2) of biological tissues in nuclear magnetic resonance measurements, the Carr-Purcell-Meiboom-Gill (CPMG) method has been recommended to avoid the effect of external magnetic field inhomogeneity on T_2 values. However, a dependence of T_2 on the interpulse delay time (IPDT) in the CPMG measurements has been shown for biological tissues. The present study examined the dependence of the T_2 on IPDT for muscle, lung (passively collapsed or degassed), and brain tissues. It was found that the CPMG T_2 of the lung was strongly dependent upon the IPDT, in contrast to muscle and brain tissues. The IPDT dependence of the CPMG T_2 for lung tissue, which was lessened by degassing, was affected by the magnetic field inhomogeneity due to air-tissue interfaces, but not by the spinlocking effect, since the T_2 measured by the Carr-Purcell-Freeman-Hill (CPFH) method did not show this dependence. These results should aid in the evaluation of T_2 values for biological tissues measured under various conditions and by different techniques.
- 東海大学の論文
著者
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HAIDA Munetaka
Departments of Neurology Tokai University School of Medicine
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Haida M
Department Of Basic Sciences And Molecular Medicine School Of Medicine Tokai University
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Haida M
Tokai Univ. School Of Medicine
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Haida Munetaka
Department Of Internal Medicine School Of Medicine Tokai University
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SHIOYA Sumie
Department of Internal Medicine, School of Medicine, Tokai University
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Kurata Takashi
Department Of Medicine School Of Medicine Tokai University
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TANIGAKI Toshimori
Department of Medicine, Tokai University School of Medicine
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Shioya S
Department Of Internal Medicine School Of Medicine Tokai University
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Shioya Sumie
Department Of Internal Medicine Ii School Of Medicine Tokai University
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Kurita Daisaku
Department Of Internal Medicine School Of Medicine Tokai University
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Kurata T
Department Of Internal Medicine School Of Medicine Tokai University
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OHTA Yasuyo
Department of Medicine, Tokai University School of Medicine
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KUTSUZAWA TOMOKO
School of Health Sciences, Tokai University
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FUKUZAKI Minoru
Tokai University Junior College, Takanawa
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KUTSUZAWA Tomoko
Department of Internal Medicine, Tokai University School of Medicine
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Ono Y
Second Department Of Internal Medicine School Of Medicine Tokai University
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Tanigaki Toshimori
Department Of Clinical Health Science Tokai University School Of Medicine
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Fukuzaki M
Tokai University Junior College Takanawa
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Kutsuzawa Tomoko
School Of Health Sciences Tokai University
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Ohta Yasuyo
Department Of Medicine Tokai University School Of Medicine
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