Medical Applications of Fast MR Imaging of Brain
Kambiz Nael1

1Radiology, Mount Sinai Hospital, New York, NY, United States

Synopsis

The target audience of this talk are neuroscientists and clinicians including neurologists and neuroradiologists interested in the development and application of rapid brain MRI imaging.

The objectives are:

1. To be familiar with the latest available methodology for fast brain MR imaging

2. Learn how to obtain routine brain MRI examinations in 5 minutes

3. Learn how to perform and interpret a 6-minute comprehensive stroke MR imaging

4. Accelerate brain vascular imaging using highly under sampled methodology:

- Compressed sensing for brain vessel wall imaging and MRA

- k-t accelerated imaging for clinical brain 4D flow imaging

Summary

The purpose of this talk is to provide an overview of evolving MR methodology for fast brain MR imaging. Latest development on new MR technology including Simultaneous Multislice Echo Planar Imaging (1), Compressed Sensing (2), parallel imaging techniques such controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA) 3 and k-t undersampling (4) will be discussed briefly. We will review how these applications can be used to accelerate acquisition time while maintaining adequate diagnostic image quality, spatial and temporal resolution. By using fast imaging tools, common commercially available sequences can be optimized to obtain routine brain MR examination in about 5-minute acquisition time. Subsequently a comprehensive stroke MR protocol that is obtained in 6 minutes (5) will be discussed and some clinical examples will be reviewed. Finally, the utility of Compressed sensing in reducing acquisition time of brain vessel wall imaging and the role of k-t undersampling in significant reduction of acquisition time for performing brain 4DFlow imaging will be discussed and clinical cases will be reviewed.

Acknowledgements

No acknowledgement found.

References

1. Barth M, Breuer F, Koopmans PJ, Norris DG, Poser BA. Simultaneous multislice (SMS) imaging techniques. Magnetic Resonance in Medicine. Jan 2016;75(1):63-81.

2. Jaspan ON, Fleysher R, Lipton ML. Compressed sensing MRI: a review of the clinical literature. The British journal of radiology. 2015;88(1056):20150487.

3. Breuer FA, Blaimer M, Heidemann RM, Mueller MF, Griswold MA, Jakob PM. Controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA) for multi-slice imaging. Magnetic Resonance in Medicine. Mar 2005;53(3):684-691.

4. Huang F, Akao J, Vijayakumar S, Duensing GR, Limkeman M. K-t grappa: A k-space implementation for dynamic mri with high reduction factor. Magnetic Resonance in Medicine. 2005;54:1172-1184

5. Nael K, Khan R, Choudhary G, et al. Six-minute magnetic resonance imaging protocol for evaluation of acute ischemic stroke: pushing the boundaries. Stroke. Jul 2014;45(7):1985-1991.

Proc. Intl. Soc. Mag. Reson. Med. 26 (2018)