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The qualitative grading of muscle fat infiltration in whiplash using fat and water magnetic resonance imaging
Northwestern Univ, IL 60611 USA.
Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för fysioterapi. Linköpings universitet, Medicinska fakulteten.ORCID-id: 0000-0002-6075-4432
Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för radiologiska vetenskaper. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Linköpings universitet, Medicinska fakulteten.
Northwestern Univ, IL 60611 USA; Univ Queensland, Australia; Zurich Univ Appl Sci, Switzerland.
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2018 (engelsk)Inngår i: The spine journal, ISSN 1529-9430, E-ISSN 1878-1632, Vol. 18, nr 5, s. 717-725Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

BACKGROUND CONTEXT: The development of muscle fat infiltration (MFI) in the neck muscles is associated with poor functional recovery following whiplash injury. Custom software and time-consuming manual segmentation of magnetic resonance imaging (MRI) is required for quantitative analysis and presents as a barrier for clinical translation. PURPOSE: The purpose of this work was to establish a qualitative MRI measure for MFI and evaluate its ability to differentiate between individuals with severe whiplash-associated disorder (WAD), mild or moderate WAD, and healthy controls. STUDY DESIGN/SETTING: This is a cross-sectional study. PATIENT SAMPLE: Thirty-one subjects with WAD and 31 age-and sex-matched controls were recruited from an ongoing randomized controlled trial. OUTCOME MEASURES: The cervical multifidus was visually identified and segmented into eighths in the axial fat/water images (C4-C7). Muscle fat infiltration was assessed on a visual scale: 0 for no or marginal MFI, 1 for light MFI, and 2 for distinct MFI. The participants with WAD were divided in two groups: mild or moderate and severe based on Neck Disability Index % scores. METHODS: The mean regional MFI was compared between the healthy controls and each of the WAD groups using the Mann-Whitney U test. Receiver operator characteristic (ROC) analyses were carried out to evaluate the validity of the qualitative method. RESULTS: Twenty (65%) patients had mild or moderate disability and 11 (35%) were considered severe. Inter- and intra-rater reliability was excellent when grading was averaged by level or when frequency of grade II was considered. Statistically significant differences (pamp;lt;.05) in regional MFI were particularly notable between the severe WAD group and healthy controls. The ROC curve, based on detection of distinct MFI, showed an area-under-the curve of 0.768 (95% confidence interval 0.59-0.94) for discrimination of WAD participants. CONCLUSIONS: These preliminary results suggest a qualitative MRI measure for MFI is reliable and valid, and may prove useful toward the classification of WAD in radiology practice. (C) 2017 Elsevier Inc. All rights reserved.

sted, utgiver, år, opplag, sider
ELSEVIER SCIENCE INC , 2018. Vol. 18, nr 5, s. 717-725
Emneord [en]
MRI; Muscle fat; Neck; Recovery; Spine; Whiplash
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Identifikatorer
URN: urn:nbn:se:liu:diva-148257DOI: 10.1016/j.spinee.2017.08.233ISI: 000432460900001PubMedID: 28887274OAI: oai:DiVA.org:liu-148257DiVA, id: diva2:1213363
Merknad

Funding Agencies|Swedish Research Council [521-2014-2982]; Medical Research Council of South-East Sweden [FORSS 225601, FORSS 391021, FORSS 311941]

Tilgjengelig fra: 2018-06-04 Laget: 2018-06-04 Sist oppdatert: 2019-06-14

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