Diagnostic Performance of Myocardial Innervation Imaging Using MIBG Scintigraphy in Differential Diagnosis between Dementia with Lewy Bodies and Other Dementias: A Systematic Review and a Meta-Analysis
Journal of Neuroimaging,  Evidence Based Medicine  Clinical Article

Treglia G et al. – Myocardial innervation imaging with metaiodobenzylguanidine (MIBG) scintigraphy demonstrated high pooled sensitivity and specificity in patients with suspected dementia with Lewy bodies (DLB). MIBG scintigraphy is an accurate test for differential diagnosis between DLB and other dementias.

Methods
  • A comprehensive computer literature search of studies published through May 2010 regarding MIBG scintigraphy in patients with DLB was performed in PubMed/MEDLINE and Embase databases.
  • Only studies in which MIBG scintigraphy was performed for differential diagnosis between DLB and other dementias were selected.
  • Pooled sensitivity and specificity of MIBG scintigraphy were presented with a 95% confidence interval (CI).
  • The area under the ROC curve was calculated to measure the accuracy of MIBG scintigraphy in differential diagnosis between Lewy body diseases and other dementias.

Results
  • Ultimately, the authors identified 8 studies comprising a total of 346 patients with dementia (152 patients with DLB and 194 patients with other dementias).
  • The pooled sensitivity of MIBG scintigraphy in detection of DLB was 98% (95% CI, 94-100%); the pooled specificity of MIBG scintigraphy in differential diagnosis between DLB and other dementias was 94% (95% CI, 90-97%).
  • The area under the ROC curve was .99.

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