title: PET/MRI: Where might it replace PET/CT?
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.
  
  
  
  5 Technical Efficacy: Stage 5 J. Magn. Reson. Imaging 2017;46:1247-1262.
authors.affiliation: Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA.
authors.forename: Eric C
authors.initials: EC
authors.lastname: Ehman
authors.affiliation: Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA.
authors.forename: Geoffrey B
authors.initials: GB
authors.lastname: Johnson
authors.affiliation: Department of Radiology and Biomedical Imaging, University of California, San Francisco, California.
authors.forename: Javier E
authors.initials: JE
authors.lastname: Villanueva-Meyer
authors.affiliation: Department of Radiology and Biomedical Imaging, University of California, San Francisco, California.
authors.forename: Soonmee
authors.initials: S
authors.lastname: Cha
authors.affiliation: Department of Radiology and Biomedical Imaging, University of California, San Francisco, California.
authors.forename: Andrew Palmera
authors.initials: AP
authors.lastname: Leynes
authors.affiliation: Department of Radiology and Biomedical Imaging, University of California, San Francisco, California.
authors.forename: Peder Eric Zufall
authors.initials: PEZ
authors.lastname: Larson
authors.affiliation: Department of Radiology and Biomedical Imaging, University of California, San Francisco, California.
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Hope
mesh_terms: D000328:Adult; D000368:Aged; D015331:Cohort Studies; D005260:Female; D005710:Gallium Radioisotopes; D006573:Heterocyclic Compounds, 1-Ring; D006801:Humans; D007239:Infections / Q000000981:diagnostic imaging; D007249:Inflammation / Q000000981:diagnostic imaging; D008113:Liver Neoplasms / Q000000981:diagnostic imaging; D008232:Lymphoproliferative Disorders / Q000000981:diagnostic imaging; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009038:Motion; D018358:Neuroendocrine Tumors / Q000000981:diagnostic imaging; D000072078:Positron Emission Tomography Computed Tomography; D049268:Positron-Emission Tomography; D011871:Radiology / Q000193:education; D015203:Reproducibility of Results
chemical_list: D005710:Gallium Radioisotopes; D006573:Heterocyclic Compounds, 1-Ring; C071349:1,4,7,10-tetraazacyclododecane- 1,4,7,10-tetraacetic acid
keywords: CT; MRI; PET; PET/CT; PET/MRI