scholarly journals Microvessel density estimation in the human brain by means of dynamic contrast-enhanced echo-planar imaging

2006 ◽  
Vol 56 (5) ◽  
pp. 1145-1150 ◽  
Author(s):  
Jens H. Jensen ◽  
Hanzhang Lu ◽  
Matilde Inglese
Keyword(s):  
Human Brain ◽  
Density Estimation ◽  
Microvessel Density ◽  
Echo Planar Imaging ◽  
Planar Imaging ◽  
Dynamic Contrast Enhanced ◽  
Contrast Enhanced ◽  
Echo Planar

scholarly journals Dual-contrast echo planar imaging with keyhole: application to dynamic contrast-enhanced perfusion studies

2005 ◽  
Vol 50 (19) ◽  
pp. 4491-4505 ◽  
Author(s):  
M Zaitsev ◽  
J D'Arcy ◽  
D J Collins ◽  
M O Leach ◽  
K Zilles ◽  
...  
Keyword(s):  
Echo Planar Imaging ◽  
Planar Imaging ◽  
Dynamic Contrast Enhanced ◽  
Perfusion Studies ◽  
Contrast Enhanced ◽  
Echo Planar

scholarly journals EPI distortion correction for simultaneous human brain stimulation and imaging at 3T

2019 ◽  
Author(s):  
Hyuntaek Oh ◽  
Jung Hwan Kim ◽  
Jeffrey M. Yau
Keyword(s):  
Human Brain ◽  
Resting State ◽  
Network Architecture ◽  
Motor Behavior ◽  
Resting State Fmri ◽  
Echo Planar Imaging ◽  
Distortion Correction ◽  
Planar Imaging ◽  
Brain Scans ◽  
Echo Planar

AbstractTranscranial magnetic stimulation (TMS) can be paired with functional magnetic resonance imaging (fMRI) in simultaneous TMS-fMRI experiments. These multimodal experiments enable causal probing of network architecture in the human brain which can complement alternative network mapping approaches. Critically, merely introducing the TMS coil into the scanner environment can sometimes produce substantial magnetic field inhomogeneities and spatial distortions which limit the utility of simultaneous TMS-fMRI. We assessed the efficacy of point spread function corrected echo planar imaging (PSF-EPI) in correcting for the field inhomogeneities associated with a TMS coil at 3T. In phantom and brain scans, we quantitatively compared the coil-induced distortion artifacts measured in PSF-EPI scans to artifacts measured in conventional echo-planar imaging (EPI) and a simultaneous multi-slice sequence (SMS)-EPI. While we observed substantial coil-related artifacts in the data produced by the conventional EPI and SMS sequences, PSF-EPI produced data that had significantly greater signal-to-noise and less distortions. In phantom scans with the PSF-EPI sequence, we also characterized the temporal profile of dynamic artifacts associated with TMS delivery and found that image quality remained high as long as the TMS pulse preceded the RF excitation pulses by at least 50ms. Lastly, we validated the PSF-EPI sequence in human brain scans involving TMS and motor behavior as well as resting state fMRI scans. Our collective results demonstrate the superiority of PSF-EPI over conventional EPI and SMS sequences for simultaneous TMS-fMRI when coil-related artifacts are a concern. The ability to collect high quality resting state fMRI data in the same session as the simultaneous TMS-fMRI experiment offers a unique opportunity to interrogate network architecture in the human brain.

scholarly journals Robust fat suppression at 3T in high-resolution diffusion-weighted single-shot echo-planar imaging of human brain

2011 ◽  
Vol 66 (6) ◽  
pp. 1658-1665 ◽  
Author(s):  
Joelle E. Sarlls ◽  
Carlo Pierpaoli ◽  
S. Lalith Talagala ◽  
Wen-Ming Luh
Keyword(s):  
High Resolution ◽  
Human Brain ◽  
Echo Planar Imaging ◽  
Fat Suppression ◽  
Single Shot ◽  
Planar Imaging ◽  
Diffusion Weighted ◽  
Echo Planar

Clinical experience with contrast enhanced echo-planar imaging of the brain

1991 ◽  
Vol 22 (2) ◽  
pp. 255-258 ◽  
Author(s):  
B. S. Worthington ◽  
P. Bullock ◽  
M. Stehlings ◽  
P. Gowlnad ◽  
J. L. Firth ◽  
...  
Keyword(s):  
Clinical Experience ◽  
Echo Planar Imaging ◽  
Planar Imaging ◽  
Contrast Enhanced ◽  
Echo Planar ◽  
The Brain

scholarly journals Dynamic multi-coil technique (DYNAMITE) shimming for echo-planar imaging of the human brain at 7 Tesla

NeuroImage ◽  
2015 ◽  
Vol 105 ◽  
pp. 462-472 ◽  
Author(s):  
Christoph Juchem ◽  
S. Umesh Rudrapatna ◽  
Terence W. Nixon ◽  
Robin A. de Graaf
Keyword(s):  
Human Brain ◽  
Echo Planar Imaging ◽  
7 Tesla ◽  
Planar Imaging ◽  
Echo Planar
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