Brain tumor protocol (MRI)

MRI protocol for brain tumor assessment is a group of MRI sequences put together to best approach CNS tumors in general.

Note: This article is intended to outline some general principles of protocol design. The specifics will vary depending on MRI hardware and software, radiologist's and referrer's preference, institutional protocols, patient factors (e.g. allergy) and time constraints. 

Sequences

A good protocol for this purpose involves at least:

  • T1 weighted
    • plane: axial and sagittal (or volumetric 3D)
    • sequence: fast-spin echo (T1 FSE) or gradient (T1 MPRAGE)
    • purpose: anatomical overview, which includes the soft tissues below the base of skull
  • T2 weighted
    • plane: axial
    • sequence: T2 FSE
    • purpose: evaluation of basal cisterns, ventricular system and subdural spaces, evaluation of vasogenic edema, and good visualization of flow-voids in vessels
  • FLAIR
    • plane: axial
    • sequence: FLAIR
    • purpose: assessment of white-matter tumor involvement and related vasogenic edema
  • diffusion-weighted imaging (DWI)
    • plane: axial
    • sequence: DWI: B=0, B=1000 and ADC 
    • purpose: evaluation of the tumor cellularity 
  • postcontrast sequences
  • susceptibility weighted imaging (SWI)

When assessing gliomas it is relevant to include advanced MRI sequences, such as:

  • perfusion
  • spectroscopy
    • sequence: single or multivoxel spectroscopy
    • purpose: metabolic peaks characterization
MRI protocols
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Article information

rID: 37786
Section: Radiography
Synonyms or Alternate Spellings:
  • MRI protocol: brain tumour
  • MRI protocol for assessment of glioma
  • MRI protocol: glioma
  • MRI protocol for assessment of brain tumour
  • MRI protocol for brain tumour assessment

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