Muscle & nerve · 2020
Semi-automated volumetry of MRI serves as a biomarker in neuromuscular patients.
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Müller Madlaine, Dohrn Maike F, Romanzetti Sandro, Gadermayr Michael, Reetz Kathrin, Krämer Nils A, Kuhl Christiane, Schulz Jörg B, Gess Burkhard
Аннотация
BACKGROUND: Muscle MRI is of increasing importance for neuromuscular patients to detect changes in muscle volume, fat-infiltration, and edema. We developed a method for semi-automated segmentation of muscle MRI datasets.
METHODS: An active contour-evolution algorithm implemented within the ITK-SNAP software was used to segment T1-weighted MRI, and to quantify muscle volumes of neuromuscular patients (n = 65).
RESULTS: Semi-automated compared with manual segmentation was shown to be accurate and time-efficient. Muscle volumes and ratios of thigh/lower leg volume were lower in myopathy patients than in controls (P < .0001; P < .05). We found a decrease of lower leg muscle volume in neuropathy patients compared with controls (P < .01), which correlated with clinical parameters. In myopathy patients, muscle volume showed a positive correlation with muscle strength (rleft = 0.79, pleft < .0001). Muscle volumes were independent of body mass index and age.
CONCLUSIONS: Our method allows for exact and time-efficient quantification of muscle volumes with possible use as a biomarker in neuromuscular patients.
METHODS: An active contour-evolution algorithm implemented within the ITK-SNAP software was used to segment T1-weighted MRI, and to quantify muscle volumes of neuromuscular patients (n = 65).
RESULTS: Semi-automated compared with manual segmentation was shown to be accurate and time-efficient. Muscle volumes and ratios of thigh/lower leg volume were lower in myopathy patients than in controls (P < .0001; P < .05). We found a decrease of lower leg muscle volume in neuropathy patients compared with controls (P < .01), which correlated with clinical parameters. In myopathy patients, muscle volume showed a positive correlation with muscle strength (rleft = 0.79, pleft < .0001). Muscle volumes were independent of body mass index and age.
CONCLUSIONS: Our method allows for exact and time-efficient quantification of muscle volumes with possible use as a biomarker in neuromuscular patients.
Предметные рубрики MeSH
AdultAgedAutomationCase-Control StudiesCharcot-Marie-Tooth DiseaseDiabetic NeuropathiesFemaleHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleMiddle AgedMuscle, SkeletalMuscular DiseasesMuscular Dystrophies, Limb-GirdleMyositisMyositis, Inclusion BodyOrgan SizePeripheral Nervous System DiseasesPolymyositisPolyradiculoneuropathy, Chronic Inflammatory DemyelinatingRetrospective StudiesSoftware