Abstract:
:To investigate whether diffusion-related compartmentalization could be observed in skeletal muscle and whether this compartmentalization was affected by exercising, attenuation curves of signal against diffusion weighting were obtained in skeletal muscle of nine healthy volunteers at rest and after an exercise. Fifteen points were obtained for each diffusion curve with diffusion weightings ranging between approximately 0 and 560 x 10(6) s/m2. Data were fitted a biexponential model using three parameters to yield two apparent diffusion coefficients, a long one, ADCL, and a short one, ADCS, together with the fractional volume, fL, associated with the long one. At rest, values of parameters ADCL, ADCS, and fL were 46 x 10(-9) +/- 37 x 10(-9) m2/s, 1.74 x 10(-9) +/- 0.11 x 10(-9) m2/s, and 3.6 +/- 1.3%, respectively. After exercise, these values were 89 x 10(-9) +/- 37 x 10(-9) m2/s (p < .001 vs. rest), 1.94 x 10(-9) +/- 0.13 x 10(-9) m2/s (p < .001), and 5.2 +/- 1.3% (p < .05), respectively. These variations demonstrate significant changes in attenuation curves between rest and postexercise in skeletal muscle and may support an interpretation of the long and the short components in terms of a microvascular and an extra-microvascular compartments.
journal_name
Magn Reson Imagingjournal_title
Magnetic resonance imagingauthors
Morvan Ddoi
10.1016/0730-725x(94)00096-lsubject
Has Abstractpub_date
1995-01-01 00:00:00pages
193-9issue
2eissn
0730-725Xissn
1873-5894pii
0730-725X(94)00096-Ljournal_volume
13pub_type
杂志文章abstract::In this manuscript, fast and clinically feasible model-based bootstrapping algorithms using a geometrically constrained two-tensor diffusion model are employed for estimating uncertainty in fiber orientation. A Monte-Carlo-based tensor morphology voxel classification algorithm is initially applied using single-tensor ...
journal_title:Magnetic resonance imaging
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doi:10.1016/j.mri.2012.07.004
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journal_title:Magnetic resonance imaging
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doi:10.1016/j.mri.2013.08.001
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abstract:PURPOSE:To assess the ability and reproducibility of Non-contrast Magnetic Resonance Lymphography (NMRL) in detecting and quantify lymphedema, using a semiquantitative scoring system. METHODS AND MATERIAL:This is a monocentric retrospective study of 134 consecutive patients with a clinical diagnosis of limb lymphedema...
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journal_title:Magnetic resonance imaging
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/s0730-725x(03)00075-4
更新日期:2003-06-01 00:00:00
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/s0730-725x(96)00353-0
更新日期:1997-01-01 00:00:00
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journal_title:Magnetic resonance imaging
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doi:10.1016/j.mri.2020.04.015
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/0730-725x(91)90007-9
更新日期:1991-01-01 00:00:00
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/0730-725x(86)91068-4
更新日期:1986-01-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/j.mri.2014.10.002
更新日期:2015-01-01 00:00:00
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/s0730-725x(01)00399-x
更新日期:2001-12-01 00:00:00
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pub_type: 社论
doi:10.1016/j.mri.2019.12.006
更新日期:2020-05-01 00:00:00
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/j.mri.2020.06.019
更新日期:2020-10-01 00:00:00
abstract:AIM:The study aimed to validate magnetic resonance microscopy (MRM) studies of forensic tissue specimens (skin samples with electric injury patterns) against the results from routine histology. METHODS AND RESULTS:Computed tomography and magnetic resonance imaging are fast becoming important tools in clinical and fore...
journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/j.mri.2004.08.019
更新日期:2004-10-01 00:00:00
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/j.mri.2003.08.014
更新日期:2003-12-01 00:00:00
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章,评审
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更新日期:1995-01-01 00:00:00
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journal_title:Magnetic resonance imaging
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更新日期:2009-12-01 00:00:00
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章
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更新日期:2006-07-01 00:00:00
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/0730-725x(91)90095-4
更新日期:1991-01-01 00:00:00
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/s0730-725x(01)00267-3
更新日期:2001-04-01 00:00:00
abstract::The clinical evaluation of three-dimensional time-of-flight MR angiography was prospectively performed in 16 patients with intracranial meningioma. MR angiographic techniques used in this study both with and without gadopentetate dimeglumine made it possible to demonstrate the topographic relationship between the tumo...
journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/0730-725x(93)90466-q
更新日期:1993-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:1988-09-01 00:00:00
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journal_title:Magnetic resonance imaging
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更新日期:2005-09-01 00:00:00
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journal_title:Magnetic resonance imaging
pub_type: 杂志文章
doi:10.1016/j.mri.2005.04.007
更新日期:2005-06-01 00:00:00