An order parameter without magic angle effect (OPTIMA) derived from dispersion in ordered tissue.
An order parameter without magic angle effect (OPTIMA) derived from dispersion in ordered tissue.
复制标题
无魔角效应的有序参数 (OPTIMA) 来自有序组织中的色散。
DOI:
10.1002/mrm.28045
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发表时间:
2020
影响因子:
3.3
通讯作者:
Pang,Yuxi
中科院分区:
文献类型:
--
作者:
Pang,Yuxi
PurposeMRR2imaging of ordered tissue exhibits the magic angle effect, potentially masking subtle pathological changes in cartilage. This work aimed to develop an orientation‐independent order parameter (S) exclusively sensitive to collagen degeneration.MethodsA theory was developed based on dispersion coupled with a simplified molecular motion model in which anisotropic became directly proportional to correlation time andScould be derived. This new parameter was validated with ex vivo dispersion reported on orientated (n = 4), enzymatically depleted bovine cartilage (n = 6), and osteoarthritic human knee specimens (n = 14) at 9.4 Tesla, which was further demonstrated on 1 healthy human knee in vivo at 3 Tesla.Resultsfrom orientation‐dependent dispersion revealed a significantly high average correlation (r= 0.89 ± 0.05,P< 0.05) with (θ) on cartilage samples and a moderate correlation (r= 0.48,P< 0.001) for the human knee in vivo. The derivedS(10−3) significantly decreased in advanced osteoarthritis (1.64 ± 0.03 vs. 2.30 ± 0.11,P< 0.001) and collagen‐depleted samples (1.30 ± 0.11 vs. 2.12 ± 0.12,P< 0.001) when compared with early osteoarthritis and the control, respectively.ConclusionThe proposed order parameter could be a potentially useful orientation‐independent MR biomarker for collagen alterations in cartilage and other highly structured tissues.
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影响因子:
6.7
作者:
ERICSSON, I;LINDHE, J
通讯作者:
LINDHE, J
DOI:
--
发表时间:
1971
期刊:
The Journal of Periodontology
影响因子:
--
作者:
J. D. Suomi;J. Greene;J. Vermillion;J. Doyle;J. Change;E. C. Leatherwood
通讯作者:
E. C. Leatherwood
影响因子:
6.7
作者:
S. Nyman;J. Lindhe
通讯作者:
J. Lindhe
DOI:
--
发表时间:
1974
期刊:
Odontologisk revy
影响因子:
--
作者:
G. Svanberg
通讯作者:
G. Svanberg
影响因子:
2
作者:
LOE, HARALD;SILNESS, JOHN
通讯作者:
SILNESS, JOHN