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Improved Spatiotemporal Resolution of Dynamic Susceptibility Contrast Perfusion MRI in Brain Tumors Using

A Chakhoyan1,2, K Leu1,2,3, W B Pope2

  • 1From the UCLA Brain Tumor Imaging Laboratory (A.C., K.L., B.M.E.), Center for Computer Vision and Imaging Biomarkers, University of California, Los Angeles, Los Angeles, California.

AJNR. American Journal of Neuroradiology
|October 28, 2017
PubMed

Insights

Simultaneous multi-slice echo-planar imaging improves spatiotemporal resolution for dynamic susceptibility contrast (DSC) perfusion MRI in glioblastoma patients. This technique enhances imaging quality for better tumor assessment.

Area of Science:

  • Radiology
  • Neuroimaging
  • Medical Physics

Background:

  • Dynamic susceptibility contrast (DSC) perfusion MRI is crucial for brain tumor assessment, particularly glioblastoma.
  • Current DSC MRI techniques face limitations in balancing spatial and temporal resolution, impacting diagnostic accuracy.
  • Simultaneous multi-slice (SMS) imaging offers potential to overcome these resolution trade-offs.

Purpose of the Study:

  • To evaluate the efficacy of simultaneous multi-slice echo-planar imaging (SMS-EPI) in enhancing the spatiotemporal resolution of DSC perfusion MRI.
  • To demonstrate the application of SMS-EPI for improved DSC-MR imaging in patients diagnosed with glioblastoma.

Main Methods:

  • Implementation of SMS-EPI sequences for DSC perfusion MRI acquisition in glioblastoma patients.
  • Comparison of spatiotemporal resolution metrics between conventional DSC-MRI and SMS-EPI DSC-MRI.
  • Analysis of relative cerebral blood volume (rCBV) estimation accuracy.

Main Results:

  • SMS-EPI significantly improved spatiotemporal resolution compared to conventional DSC-MRI.
  • Enhanced imaging allowed for greater spatial coverage while maintaining adequate temporal resolution for rCBV analysis.
  • Improved image quality was observed in glioblastoma patients utilizing SMS-EPI.

Conclusions:

  • Simultaneous multi-slice EPI is a valuable technique for optimizing DSC perfusion MRI in brain tumor imaging.
  • This advancement offers improved diagnostic capabilities for glioblastoma by enhancing image resolution.
  • SMS-EPI represents a significant step forward in neuroimaging for accurate tumor characterization.

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