期刊
EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING
卷 48, 期 12, 页码 3847-3858出版社
SPRINGER
DOI: 10.1007/s00259-021-05299-y
关键词
Meta-analysis; Autoimmune encephalitis; Brain F-18-FDG PET; Autoantibody
The study summarizes the high detection sensitivity of brain F-18-FDG PET in the diagnosis of autoimmune encephalitis and defines specific metabolic imaging patterns for the most common autoantibodies.
Objective To consolidate current understanding of detection sensitivity of brain F-18-FDG PET scans in the diagnosis of autoimmune encephalitis and to define specific metabolic imaging patterns for the most frequently occurring autoantibodies. Methods A systematic and exhaustive search of data available in the literature was performed by querying the PubMed/MEDLINE and Cochrane databases for the search terms: ((PET) OR (positron emission tomography)) AND ((FDG) OR (fluorodeoxyglucose)) AND ((encephalitis) OR (brain inflammation)). Studies had to satisfy the following criteria: (i) include at least ten pediatric or adult patients suspected or diagnosed with autoimmune encephalitis according to the current recommendations, (ii) specifically present F-18-FDG PET and/or morphologic imaging findings. The diagnostic F-18-FDG PET detection sensitivity in autoimmune encephalitis was determined for all cases reported in this systematic review, according to a meta-analysis following the PRISMA method, and selected publication quality was assessed with the QUADAS-2 tool. Results The search strategy identified 626 articles including references from publications. The detection sensitivity of F-18-FDG PET was 87% (80-92%) based on 21 publications and 444 patients included in the meta-analysis. We also report specific brain F-18-FDG PET imaging patterns for the main encephalitis autoantibody subtypes. Conclusion and relevance Brain F-18-FDG PET has a high detection sensitivity and should be included in future diagnostic autoimmune encephalitis recommendations. Specific metabolic F-18-FDG PET patterns corresponding to the main autoimmune encephalitis autoantibody subtypes further enhance the value of this diagnostic.
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