研究目的
To compare the diagnostic accuracy of PET/CT and MRI for local recurrence and residue of nasopharyngeal carcinoma after radiotherapy.
研究成果
PET/CT and MRI both show high diagnostic ability for local recurrence/residue of NPC, but PET/CT is superior to MRI based on subgroup analyses. The examination method is a source of heterogeneity, providing stronger evidence for clinical practice.
研究不足
High heterogeneity within studies, some factors like age, gender, and stage not available for subgroup analysis, mixed golden standards (biopsy, follow-up, or both), and evolution of MRI and PET/CT technologies over the long search period from 1991 to 2018.
1:Experimental Design and Method Selection:
A systematic review and meta-analysis following Cochrane Handbook and PRISMA guidelines, using a bivariate random-effect model for pooling diagnostic accuracy measures.
2:Sample Selection and Data Sources:
44 studies with 61 groups of data from PubMed, Web of Science, EMBASE, China National Knowledge Infrastructure, and Wanfang databases, involving 3369 patients. Inclusion criteria included confirmation by golden standard (biopsy or follow-up) and provision of TP, FP, FN, TN data.
3:List of Experimental Equipment and Materials:
Not applicable as this is a meta-analysis of existing studies; no new experiments were conducted.
4:Experimental Procedures and Operational Workflow:
Systematic search, study selection by two independent authors, data extraction, quality assessment using QUADAS-2, statistical analysis including sensitivity, specificity, PLR, NLR, DOR, AUC, subgroup analyses, meta-regression, and publication bias assessment.
5:Data Analysis Methods:
Statistical analyses performed using Stata 13 and Review Manager 5, with bivariate random-effect model, SROC curves, chi-square and I2 for heterogeneity, and Deek's test for publication bias.
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