Diffusion MRI with concurrent magnetic field monitoring

Diffusion MRI with concurrent magnetic field monitoring.

PURPOSE Diffusion MRI is compromised by unknown field perturbation during image encoding. The purpose of this study was to address this problem using the recently described approach of concurrent magnetic field monitoring. METHODS Magnetic field dynamics were monitored during the echo planar imaging readout of a common diffusion-weighted MRI sequence using an integrated magnetic field camera ...

Diffusion MRI: Mitigation of Magnetic Field Inhomogeneities

205 Diffusion MRI: Mitigation of Magnetic Field Inhomogeneities P. Marcon, K. Bartusek, Z. Dokoupil, E. Gescheidtova Department of Theoretical and Experimental Electrical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology, Kolejni, 2906/4., 612 00, Brno, Czech Republic, [email protected] Institute of Scientific Instruments of the ASCR v.v.i., Kral...

Noise Reduction in fMRI Utilizing Concurrent Magnetic Field Monitoring

Concurrent higher-order field monitoring for routine head MRI: an integrated heteronuclear setup

Fig. 5: SE EPI with 24 interleaves, readout dur. 11.20ms, TE 28.7ms, in-plane resolution 1.2mm, slice thickness 4mm. Higher-order image reconstruction [3] is based on k0-15 and performed on a cluster of 32 CPU’s; reconstruction-time 60sec for 8 coils. Fig. 4: Top: unwrapped phase evolution of 15 NMR probes over the 9.3 ms readout of the SE-EPI scan. Lower rows: kλ(t) phase coefficient evolution...

Therapy monitoring of skeletal metastases with whole-body diffusion MRI.

Current methods of assessing tumor response at skeletal sites with metastatic disease use a combination of imaging tests, serum and urine biochemical markers, and symptoms assessment. These methods do not always enable the positive assessment of therapeutic benefit to be made but instead provide an evaluation of progression, which then guides therapy decisions in the clinic. Functional imaging ...