Head and Neck Imaging
Assessments the Relationship between Fat Infiltration of Lumber Paraspinal Muscles and Age using Dixon Sequence at 3.0 Tesla MR Imaging*
Author：ZHU Jin, LING Ren-nan, GONG Jing-shan, et al.
affiliation：Department of Radiology, Shenzhen People's Hospital (The Second Clinical Medical College of Jinan University), Shenzhen 518020, Guangdong Province, China
PDFAbstract
Objective To assess paraspinal muscles fat infiltration by using Dixon MR imaging and investigate the relationship of fat infiltration with age. Methods Two radiologists measured signal intensity (SI) of right side paraspinal muscles by manual drawn ROI on fat and water images of Dixon sequence twice independently in 135 patients. The fat signal fraction (FSF) of paraspinal muscles was calculated. ICCs were used to evaluate inter- and intra-observers reliability. The relationship between FSF of paraspinal muscles and age was assessed using ANCOVA with adjustment of gender. Results FSF of paraspinal muscles increased with age. After adjusting gender, the association between FSF of paraspinal muscles and age was statistical significant (P=0.016). Inter- and intraobserver reliability was excellent with ICC of 0.83 and 0.86, respectively. Conclusion Dixon MR imaging can be used to monitor degeneration of paraspinal muscles with aging with excellent reliability.
【Keyword】Muscle; Fat Infiltration; Magnetic Resonance Imaging; Dixon Sequence
【Chart number】R575
【Document Identification Number】A
【DOI】 10.3969/j.issn.1672- 5131.2017.08.043
Chinese journal of CT and MRI
th15Volume， th 8 Issue
2017Year08Month
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