R
Richard M. Leahy
Researcher at University of Southern California
Publications - 419
Citations - 27317
Richard M. Leahy is an academic researcher from University of Southern California. The author has contributed to research in topics: Iterative reconstruction & Imaging phantom. The author has an hindex of 70, co-authored 406 publications receiving 24876 citations. Previous affiliations of Richard M. Leahy include Los Alamos National Laboratory & Johns Hopkins University School of Medicine.
Papers
More filters
Journal ArticleDOI
Altered Structural and Functional Connectivity in Late Preterm Preadolescence: An Anatomic Seed-Based Study of Resting State Networks Related to the Posteromedial and Lateral Parietal Cortex
Andrew J. Degnan,Jessica L. Wisnowski,Soyoung Choi,Rafael Ceschin,Chitresh Bhushan,Richard M. Leahy,Patricia Corby,Vincent J. Schmithorst,Ashok Panigrahy +8 more
TL;DR: Late preterm preadolescence is associated with altered functional connectivity from the PMC and lateral parietal cortex to known distributed functional cortical networks despite no significant executive neurocognitive differences.
Journal ArticleDOI
Paired MEG data set source localization using recursively applied and projected (RAP) MUSIC
TL;DR: A new method for processing paired magnetoencephalographic (MEG) data sets using the authors' recursively applied and projected multiple signal classification (RAP-MUSIC) algorithm, shown to be effective in situations where the time series associated with Control and Task activity possess significant cross correlation.
Proceedings ArticleDOI
Matching deformable atlas models to preprocessed magnetic resonance brain images
S.R. Sandor,Richard M. Leahy +1 more
TL;DR: The approach is to automatically match a deformable anatomical atlas model to preprocessed brain images, where preprocessing consists of 3-D Marr-Hildreth edge detection and morphological operations, to provide a smoothed representation of the brain surface to which the deformable model can rapidly converge.
Journal ArticleDOI
Spatial Distortion Correction and Crystal Identification for MRI-Compatible Position-Sensitive Avalanche Photodiode-Based PET Scanners
Abhijit J. Chaudhari,Anand A. Joshi,Anand A. Joshi,Yibao Wu,Richard M. Leahy,Simon R. Cherry,Ramsey D. Badawi +6 more
TL;DR: Results indicate that the proposed distortion correction scheme and crystal identification method lead to a large reduction in manual labor and indeed can routinely be used for calibration and characterization studies in MRI-compatible PET scanners based on PSAPDs.
Journal ArticleDOI
High-resolution voxelation mapping of human and rodent brain gene expression.
Ram P. Singh,Vanessa M. Brown,Abhijit J. Chaudhari,Arshad H. Khan,Alex Ossadtchi,Daniel M. Sforza,A.Ken Meadors,Simon R. Cherry,Richard M. Leahy,Desmond J. Smith +9 more
TL;DR: Two devices that allow spatially registered harvesting of voxels from the human and rodent brain, giving linear resolutions of 3.3 and 1 mm, respectively are described, which showed good agreement with known expression patterns.