User profiles for L L Wald
Lawrence WaldMGH Radiology, Harvard Medical School Verified email at nmr.mgh.harvard.edu Cited by 33726 |
Theory and application of array coils in MR spectroscopy
The theory and application of array coils are reviewed in the context of phased array
spectroscopy. The optimization of the signal‐to‐noise ratio from an array of coils is developed by …
spectroscopy. The optimization of the signal‐to‐noise ratio from an array of coils is developed by …
Low‐cost and portable MRI
Research in MRI technology has traditionally expanded diagnostic benefit by developing
acquisition techniques and instrumentation to enable MRI scanners to "see more." This …
acquisition techniques and instrumentation to enable MRI scanners to "see more." This …
Massively parallel MRI detector arrays
Originally proposed as a method to increase sensitivity by extending the locally high-sensitivity
of small surface coil elements to larger areas via reception, the term parallel imaging now …
of small surface coil elements to larger areas via reception, the term parallel imaging now …
Blipped‐controlled aliasing in parallel imaging for simultaneous multislice echo planar imaging with reduced g‐factor penalty
Simultaneous multislice Echo Planar Imaging (EPI) acquisition using parallel imaging can
decrease the acquisition time for diffusion imaging and allow full‐brain, high‐resolution …
decrease the acquisition time for diffusion imaging and allow full‐brain, high‐resolution …
[HTML][HTML] A computational atlas of the hippocampal formation using ex vivo, ultra-high resolution MRI: Application to adaptive segmentation of in vivo MRI
Automated analysis of MRI data of the subregions of the hippocampus requires
computational atlases built at a higher resolution than those that are typically used in current …
computational atlases built at a higher resolution than those that are typically used in current …
Comparison of physiological noise at 1.5 T, 3 T and 7 T and optimization of fMRI acquisition parameters
…, CJ Wiggins, A Potthast, GC Wiggins, LL Wald - Neuroimage, 2005 - Elsevier
Previous studies have shown that under some conditions, noise fluctuations in an fMRI time-course
are dominated by physiological modulations of the image intensity with secondary …
are dominated by physiological modulations of the image intensity with secondary …
Pushing the limits of in vivo diffusion MRI for the Human Connectome Project
Perhaps more than any other “-omics” endeavor, the accuracy and level of detail obtained
from mapping the major connection pathways in the living human brain with diffusion MRI …
from mapping the major connection pathways in the living human brain with diffusion MRI …
Automated segmentation of hippocampal subfields from ultra‐high resolution in vivo MRI
Recent developments in MRI data acquisition technology are starting to yield images that
show anatomical features of the hippocampal formation at an unprecedented level of detail, …
show anatomical features of the hippocampal formation at an unprecedented level of detail, …
32‐channel 3 Tesla receive‐only phased‐array head coil with soccer‐ball element geometry
…, A Reykowski, M Nittka, LL Wald - … in Medicine: An …, 2006 - Wiley Online Library
A 32‐channel 3T receive‐only phased‐array head coil was developed for human brain
imaging. The helmet‐shaped array was designed to closely fit the head with individual …
imaging. The helmet‐shaped array was designed to closely fit the head with individual …
Laminar analysis of 7 T BOLD using an imposed spatial activation pattern in human V1
With sufficient image encoding, high-resolution fMRI studies are limited by the biological
point-spread of the hemodynamic signal. The extent of this spread is determined by the local …
point-spread of the hemodynamic signal. The extent of this spread is determined by the local …