Abstract
OBJECTIVES: Two-dimensional shear wave elastography (2D-SWE) is a non-invasive technique for the evaluation of Sjögren's disease (SjD). This study investigated the diagnostic accuracy of 2D-SWE in assessing major salivary gland involvement in SjD. DESIGN: A systematic review and meta-analysis. DATA SOURCES: Data were obtained by searching PubMed, MEDLINE, EMBASE, Scopus, Cochrane library and CNKI from 1999 to 26 September 2022, which includes randomised clinical trial of 2D-SWE for the diagnosis of SjD. ELIGIBILITY CRITERIA: (1) Patients (≥18 years old) diagnosed with SjD following the international classification in 2002 or 2016 American College of Rheumatology-European League Against Rheumatism classification criteria for SjD; (2) The purpose of this study was to evaluate the diagnostic value of 2D-SWE in SjD; (3) The evaluation parameters for the diagnosis of SjD can be extracted or indirectly obtained in this article, including sensitivity, specificity, true positive, false positive, false negative, true negative, diagnostic point (Young's modulus) and other data. DATA EXTRACTION AND SYNTHESIS: Four authors independently screened and assessed the literature and extracted the data. RevMan V.5.3 and StataMP V.18 software were used for quality assessment and meta-analysis. RESULTS: We included 8 studies with a total of 912 cases, including 509 patients with SjD. The high-risk bias in the quality evaluation focused on patient selection and index test. The pooled sensitivity, specificity and summary area under the curve of 2D-SWE were 0.75 (95% CI 0.62 to 0.84), 0.89 (95% CI 0.80 to 0.94) and 0.90 (95% CI 0.87 to 0.92), respectively. CONCLUSIONS: 2D-SWE has an acceptable diagnostic accuracy for SjD patients and is an effective tool for auxiliary diagnosis of SjD. PROSPERO REGISTRATION NUMBER: CRD42022365766.