Whole-body diffusion-weighted MRI for staging lymphoma at 3.0T: comparative study with MR imaging at 1.5T

Clin Imaging. 2015 Jan-Feb;39(1):104-9. doi: 10.1016/j.clinimag.2014.06.017. Epub 2014 Jul 12.

Abstract

Objective: To compare 3T and 1.5T Whole Body Diffusion Weighted MRI (WB-DW-MRI) in patients at initial diagnosis of lymphoma.

Methods: Twenty-three patients were included. We performed a 3.0T and 1.5T WB-DW-MRI with 18 F-Fluoride Positron Emission Tomography Computed Tomography (PET-CT) as the reference standard. Image quality, lymph node, organ involvement, and Ann Arbor staging were evaluated.

Results: Major artifacts were found in 2/23 patients at 3.0T. Concordance was excellent between 1.5T and 3T for nodal (Intraclass Correlation Coefficient (CCI)=0.995), organ involvement (CCI=0.990), and Ann Arbor stages (k=0.967).

Conclusion: A 3T WB-DW-MRI yields accurate assessment and staging of lymphoma comparable to 1.5T.

Keywords: 1.5T DW WB MRI; 3.0T; Ann Arbor staging; Artifacts; Lymphomas.

Publication types

  • Comparative Study

MeSH terms

  • Adult
  • Aged
  • Diffusion Magnetic Resonance Imaging / methods*
  • Female
  • Fluorodeoxyglucose F18
  • Humans
  • Image Processing, Computer-Assisted
  • Lymph Nodes / pathology*
  • Lymphoma / pathology*
  • Magnetic Resonance Imaging / methods*
  • Male
  • Middle Aged
  • Neoplasm Staging
  • Prospective Studies
  • Radiopharmaceuticals
  • Sensitivity and Specificity
  • Tomography, X-Ray Computed / methods
  • Whole Body Imaging / methods*
  • Young Adult

Substances

  • Radiopharmaceuticals
  • Fluorodeoxyglucose F18