Feasibility of peripheral nerve MR neurography using diffusion tensor imaging adapted to skeletal muscle disease

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Feasibility of peripheral nerve MR neurography using diffusion tensor imaging adapted to skeletal muscle disease. / Keller, Sarah; Wang, Zhiyue J; Golsari, Amir; Kim, Anne Catherine; Kooijman, Hendrik; Adam, Gerhard; Yamamura, Jin.

in: ACTA RADIOL, Jahrgang 59, Nr. 5, 05.2018, S. 560-568.

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@article{6708cd55bf1b4207a0ee2c6cf31f2c76,
title = "Feasibility of peripheral nerve MR neurography using diffusion tensor imaging adapted to skeletal muscle disease",
abstract = "Background Diffusion tensor imaging (DTI) of peripheral nerves may provide additional information about nerve involvement in muscular disorders, but is considered difficult due to different optimal scan parameters tailored to magnetic resonance (MR) signal properties of muscle and neural tissues. Purpose To assess the feasibility of sciatic nerve DTI using two different approaches of region of interest (ROI)-localization in DTI scans with b-values 500 s/mm2, in participants with muscular disorders and in controls. Material and Methods DTI of the thigh was conducted on a 3T system in ten patients (6 men, 4 women; mean age =54 ± 15 years) with neuromuscular disorders and ten controls. T1-weighted (T1W) images were co-registered to fractional anisotropy (FA) color-encoded images. The apparent diffusion coefficient (ADC), FA, and fiber track length (FTL) were analyzed by two operators using a freehand ROI and a single-point ROI covering the sciatic nerve. Interclass correlation coefficient (ICC) and Bland-Altman analysis were used for evaluation of inter-operator and inter-technical agreement, respectively. Results Three-dimensional visualization of sciatic nerve fiber was achievable using both techniques. The ICC of DTI metrics showed excellent inter-operator agreement both in patients and controls. Bland-Altman analysis revealed good agreement of both techniques. A maximum FTL was achieved using the single-point ROI technique, but with a lower inter-operator agreement (ICC = 0.99 vs. 0.83). The ADC and maximum FTL were significantly decreased in patients compared to controls. Conclusion Both ROI localization techniques are feasible to analyze the sciatic nerve in the setting of muscular disease. A maximum FTL is reached using the single-point ROI, however, at the cost of lower inter-operator agreement.",
keywords = "Journal Article",
author = "Sarah Keller and Wang, {Zhiyue J} and Amir Golsari and Kim, {Anne Catherine} and Hendrik Kooijman and Gerhard Adam and Jin Yamamura",
note = "{\"A}nderung Eintragungsjahr von 1993 auf 2018",
year = "2018",
month = may,
doi = "10.1177/0284185117726100",
language = "English",
volume = "59",
pages = "560--568",
journal = "ACTA RADIOL",
issn = "0284-1851",
publisher = "SAGE Publications",
number = "5",

}

RIS

TY - JOUR

T1 - Feasibility of peripheral nerve MR neurography using diffusion tensor imaging adapted to skeletal muscle disease

AU - Keller, Sarah

AU - Wang, Zhiyue J

AU - Golsari, Amir

AU - Kim, Anne Catherine

AU - Kooijman, Hendrik

AU - Adam, Gerhard

AU - Yamamura, Jin

N1 - Änderung Eintragungsjahr von 1993 auf 2018

PY - 2018/5

Y1 - 2018/5

N2 - Background Diffusion tensor imaging (DTI) of peripheral nerves may provide additional information about nerve involvement in muscular disorders, but is considered difficult due to different optimal scan parameters tailored to magnetic resonance (MR) signal properties of muscle and neural tissues. Purpose To assess the feasibility of sciatic nerve DTI using two different approaches of region of interest (ROI)-localization in DTI scans with b-values 500 s/mm2, in participants with muscular disorders and in controls. Material and Methods DTI of the thigh was conducted on a 3T system in ten patients (6 men, 4 women; mean age =54 ± 15 years) with neuromuscular disorders and ten controls. T1-weighted (T1W) images were co-registered to fractional anisotropy (FA) color-encoded images. The apparent diffusion coefficient (ADC), FA, and fiber track length (FTL) were analyzed by two operators using a freehand ROI and a single-point ROI covering the sciatic nerve. Interclass correlation coefficient (ICC) and Bland-Altman analysis were used for evaluation of inter-operator and inter-technical agreement, respectively. Results Three-dimensional visualization of sciatic nerve fiber was achievable using both techniques. The ICC of DTI metrics showed excellent inter-operator agreement both in patients and controls. Bland-Altman analysis revealed good agreement of both techniques. A maximum FTL was achieved using the single-point ROI technique, but with a lower inter-operator agreement (ICC = 0.99 vs. 0.83). The ADC and maximum FTL were significantly decreased in patients compared to controls. Conclusion Both ROI localization techniques are feasible to analyze the sciatic nerve in the setting of muscular disease. A maximum FTL is reached using the single-point ROI, however, at the cost of lower inter-operator agreement.

AB - Background Diffusion tensor imaging (DTI) of peripheral nerves may provide additional information about nerve involvement in muscular disorders, but is considered difficult due to different optimal scan parameters tailored to magnetic resonance (MR) signal properties of muscle and neural tissues. Purpose To assess the feasibility of sciatic nerve DTI using two different approaches of region of interest (ROI)-localization in DTI scans with b-values 500 s/mm2, in participants with muscular disorders and in controls. Material and Methods DTI of the thigh was conducted on a 3T system in ten patients (6 men, 4 women; mean age =54 ± 15 years) with neuromuscular disorders and ten controls. T1-weighted (T1W) images were co-registered to fractional anisotropy (FA) color-encoded images. The apparent diffusion coefficient (ADC), FA, and fiber track length (FTL) were analyzed by two operators using a freehand ROI and a single-point ROI covering the sciatic nerve. Interclass correlation coefficient (ICC) and Bland-Altman analysis were used for evaluation of inter-operator and inter-technical agreement, respectively. Results Three-dimensional visualization of sciatic nerve fiber was achievable using both techniques. The ICC of DTI metrics showed excellent inter-operator agreement both in patients and controls. Bland-Altman analysis revealed good agreement of both techniques. A maximum FTL was achieved using the single-point ROI technique, but with a lower inter-operator agreement (ICC = 0.99 vs. 0.83). The ADC and maximum FTL were significantly decreased in patients compared to controls. Conclusion Both ROI localization techniques are feasible to analyze the sciatic nerve in the setting of muscular disease. A maximum FTL is reached using the single-point ROI, however, at the cost of lower inter-operator agreement.

KW - Journal Article

U2 - 10.1177/0284185117726100

DO - 10.1177/0284185117726100

M3 - SCORING: Journal article

C2 - 28795588

VL - 59

SP - 560

EP - 568

JO - ACTA RADIOL

JF - ACTA RADIOL

SN - 0284-1851

IS - 5

ER -