Abstract #5136

Whole body FDG PET/MRI for assessment of facet joint osteoarthritis: Direct comparison of FDG uptake with MRI and CT features

Munenobu Nogami^1,2, Shinsuke Shimoyama², Yuichi Wakabayashi², Utaru Tanaka², Yoshiaki Watanabe³, Akihito Ohnishi², Tatsuya Nishii², Yoshiko Ueno², Atsushi K Kono³, Kazuhiro Kubo², Satoru Takahashi², and Kazuro Sugimura²

¹Department of Radiology, Hyogo Cancer Center, Akashi, Japan, ²Department of Radiology, Kobe University Graduate School of Medicine, Kobe, Japan, ³Department of Radiology, National Cerebral and Cardiovascular Center, Suita, Japan

Hybrid PET/MRI scanner is an emerging modality and utilized not only for oncological or neurological purposes but also for assessment of musculoskeletal disease. Simultaneous acquisition of PET and MRI enables precise anatomical localization of PET tracers and further understanding of mechanism of the tracer uptake by using MRI information. Our hypothesis was that PET/MRI can reveal the pathophysiological mechanism of facet joint osteoarthritis by the simultaneous whole body imaging. The results showed MRI features on PET/MR significantly correlated with FDG uptake in the facet joint osteoarthritis and may be superior to CT based evaluation.

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