Abstract
Objective
This meta-analysis aimed to assess the performance of shear wave elastography (SWE) in the identification of malignant thyroid nodules.
Methods
Web of Science, Scopus, PubMed, and the references of narrative reviews were searched for relevant studies with a publication date through October 2013. The methodological quality was assessed using QUADAS tools. Data synthesis was calculated using the bivariate mixed-effects regression model.
Results
Of the 131 studies identified, 15 (11.5 %) were included, in which SWE, point-SWE or 2D SWE, was used to evaluate 1,867 thyroid nodules in 1,525 patients. Methodological assessment revealed study quality was moderate to high. The pooled sensitivity, specificity, and area under the summary receiver operating characteristic curve of SWE for detecting malignant thyroid nodules were 84.3 % (95 % confidence interval [CI], 76.9–89.7 %), 88.4 % (95 % CI, 84.0–91.7 %), and 93 % (95 % CI, 90–95 %), respectively. As a screening tool, positive and negative predictive values were 27.7–44.7 % and 98.1–99.1 %, respectively, calculated with a malignance prevalence of 5–10 % in thyroid nodules. A publication bias regression test revealed no significant small-study bias.
Conclusions
SWE is a highly accurate diagnostic modality for the identification of malignant thyroid nodules, with promise for integration into routine imaging protocols for thyroid nodules.
Key Points
• Shear wave elastography (SWE) is a group of novel ultrasound-based technologies.
• Meta-analysis was employed to assess relevant studies of SWE of thyroid nodules.
• SWE had high sensitivity and specificity in identifying malignant thyroid nodules.
• The high negative predictive value of SWE can reduce unnecessary biopsies.
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Abbreviations
- 2D SWE:
-
2-dimensional shear wave elastography
- ARFI:
-
acoustic radiation force impulse
- AUC:
-
area under the summary receiver operating characteristic curve
- CI:
-
confidence interval
- Df:
-
degrees of freedom
- DOR:
-
diagnostic odds ratio
- EFSUMB:
-
European Federation of Societies for Ultrasound in Medicine and Biology
- ES:
-
elasticity score
- ESS:
-
effective sample size
- FN:
-
false negative
- FNAB:
-
fine-needle aspirate biopsy
- FP:
-
false positive
- NPV:
-
negative predictive value
- PPV:
-
positive predictive value
- pSWE:
-
point shear wave elastography
- QUADAS:
-
quality assessment of diagnostic accuracy studies
- ROC:
-
receiver operating characteristic curve
- SE:
-
strain elastography
- SR:
-
strain ratio
- SWE:
-
shear wave elastography
- SWR:
-
shear wave velocity ratio
- SWV:
-
shear wave velocity
- TN:
-
true negative
- TP:
-
true positive
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Acknowledgments
The scientific guarantor of this publication is Xiaoxi Li. The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article. The authors state that this work has not received any funding. No complex statistical methods were necessary for this paper. Institutional Review Board approval and written informed consent were not required because our study was a meta-analysis based on published data.. Some study subjects or cohorts have been previously reported in the studies included in our meta-analysis. However, the results of our research based on these studies are original and have not been published or presented previously at meetings. Methodology: diagnostic or prognostic study, performed at one institution.
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Lin, P., Chen, M., Liu, B. et al. Diagnostic performance of shear wave elastography in the identification of malignant thyroid nodules: a meta-analysis. Eur Radiol 24, 2729–2738 (2014). https://doi.org/10.1007/s00330-014-3320-9
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DOI: https://doi.org/10.1007/s00330-014-3320-9