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DECT in Detection of Vertebral Fracture-associated Bone Marrow Edema: A Systematic Review and Meta-Analysis with Emphasis on Technical and Imaging Interpretation Parameters.

Authors
  • Ghazi Sherbaf, Farzaneh1
  • Sair, Haris I1
  • Shakoor, Delaram1
  • Fritz, Jan1
  • Schwaiger, Benedikt J1
  • Johnson, Michele H1
  • Demehri, Shadpour1
  • 1 From the Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University, 601 N Caroline St, JHOC 5165, Baltimore, MD 21287 (F.G.S., H.I.S., S.D.); Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Conn (D.S., M.H.J.); Department of Radiology, NYU Grossman School of Medicine, New York, NY (J.F.); and Department of Neuroradiology, School of Medicine, Technical University of Munich, Munich, Germany (B.J.S.). , (Germany)
Type
Published Article
Journal
Radiology
Publisher
Radiological Society of North America
Publication Date
Jul 01, 2021
Volume
300
Issue
1
Pages
110–119
Identifiers
DOI: 10.1148/radiol.2021203624
PMID: 33876973
Source
Medline
Language
English
License
Unknown

Abstract

Background Dual-energy CT (DECT) shows promising performance in detecting bone marrow edema (BME) associated with vertebral body fractures. However, the optimal technical and image interpretation parameters are not well described. Purpose To conduct a systematic review and meta-analysis to determine the diagnostic performance of DECT in detecting BME associated with vertebral fractures (VFs), using different technical and image interpretation parameters, compared with MRI as the reference standard. Materials and Methods A systematic literature search was performed on July 9, 2020, to identify studies evaluating DECT performance for in vivo detection of vertebral BME. A random-effects model was used to derive estimates of the diagnostic accuracy parameters of DECT. The impact of relevant covariates in technical, image interpretation, and study design parameters on the diagnostic performance of DECT was investigated using subgroup analyses. Results Seventeen studies (with 742 of 2468 vertebrae with BME at MRI) met inclusion criteria. Pooled estimates of sensitivity, specificity, and area under the curve of DECT for vertebral body BME were 89% (95% CI: 84%, 92%), 96% (95% CI: 92%, 98%), and 96% (95% CI: 94%, 97%), respectively. Single-source consecutive scanning showed poor specificity (78%) compared with the dual-source technique (98%, P < .001). Specificity was higher using bone and soft-tissue kernels (98%) compared with using only soft-tissue kernels (90%, P = .001). Qualitative assessment had a better specificity (97%) versus quantitative assessment (90%) of DECT images (P = .01). Experienced readers showed considerably higher specificity (96%) compared with trainees (79%, P = .01). DECT sensitivity improved using a higher difference between low- and high-energy spectra (90% vs 83%, P = .04). Conclusion Given its high specificity, the detection of vertebral bone marrow edema with dual-energy CT (DECT) associated with vertebral fracture may obviate confirmatory MRI in an emergency setting. Technical parameters, such as the dual-source technique, both bone and soft-tissue kernels, and qualitative assessment by experienced readers, can ensure the high specificity of DECT. © RSNA, 2021 Online supplemental material is available for this article.

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