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J Magn Reson Imaging. 2017 Nov;46(5):1247-1262. doi: 10.1002/jmri.25711. Epub 2017 Mar 30.

PET/MRI: Where might it replace PET/CT?

Author information

1
Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA.
2
Department of Radiology and Biomedical Imaging, University of California, San Francisco, California.

Abstract

Simultaneous positron emission tomography and MRI (PET/MRI) is a technology that combines the anatomic and quantitative strengths of MR imaging with physiologic information obtained from PET. PET and computed tomography (PET/CT) performed in a single scanning session is an established technology already in widespread and accepted use worldwide. Given the higher cost and complexity of operating and interpreting the studies obtained on a PET/MRI system, there has been question as to which patients would benefit most from imaging with PET/MRI versus PET/CT. In this article, we compare PET/MRI with PET/CT, detail the applications for which PET/MRI has shown promise and discuss impediments to future adoption. It is our hope that future work will prove the benefit of PET/MRI to specific groups of patients, initially those in which PET/CT and MRI are already performed, leveraging simultaneity and allowing for greater degrees of multiparametric evaluation.

LEVEL OF EVIDENCE:

5 Technical Efficacy: Stage 5 J. Magn. Reson. Imaging 2017;46:1247-1262.

KEYWORDS:

CT; MRI; PET; PET/CT; PET/MRI

PMID:
28370695
PMCID:
PMC5623147
DOI:
10.1002/jmri.25711
[Indexed for MEDLINE]
Free PMC Article

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