Rapid calculation of T1 using variable flip angle gradient refocused imaging
…, RJ Herfkens, GA Johnson, GH Glover, JP Karis… - Magnetic resonance …, 1987 - Elsevier
We present a method for rapid measurement of T1 relaxation times using gradient refocused
images at limited flip angles and short repetition times. This “variable nutation” techniques …
images at limited flip angles and short repetition times. This “variable nutation” techniques …
Differentiating recurrent tumor from radiation necrosis: time for re-evaluation of positron emission tomography?
PE Ricci, JP Karis, JE Heiserman… - American Journal …, 1998 - Am Soc Neuroradiology
UNLABELLED Our purpose was to evaluate the ability of FDG PET to differentiate recurrent
tumor from posttherapy radiation necrosis. METHODS MR images, PET scans, and medical …
tumor from posttherapy radiation necrosis. METHODS MR images, PET scans, and medical …
Reevaluating the imaging definition of tumor progression: perfusion MRI quantifies recurrent glioblastoma tumor fraction, pseudoprogression, and radiation necrosis to …
…, S Liu, JP Karis, KA Smith, SW Coons, P Nakaji… - Neuro …, 2012 - academic.oup.com
INTRODUCTION: Contrast-enhanced MRI (CE-MRI) represents the current mainstay for
monitoring treatment response in glioblastoma multiforme (GBM), based on the premise that …
monitoring treatment response in glioblastoma multiforme (GBM), based on the premise that …
Radiogenomics to characterize regional genetic heterogeneity in glioblastoma
Background Glioblastoma (GBM) exhibits profound intratumoral genetic heterogeneity. Each
tumor comprises multiple genetically distinct clonal populations with different therapeutic …
tumor comprises multiple genetically distinct clonal populations with different therapeutic …
Ten-year analysis of saccular aneurysms in the Barrow Ruptured Aneurysm Trial
…, FC Albuquerque, NK Hills, P Nakaji, JP Karis… - Journal of …, 2019 - thejns.org
OBJECTIVE The authors present the 10-year results of the Barrow Ruptured Aneurysm Trial
(BRAT) for saccular aneurysms. The 1-, 3-, and 6-year results of the trial have been …
(BRAT) for saccular aneurysms. The 1-, 3-, and 6-year results of the trial have been …
Anatomical and biomechanical analyses of the unique and consistent locations of sacral insufficiency fractures
…, NR Crawford, S Baek, RL Anderson, AM Pitt, JP Karis… - Spine, 2009 - journals.lww.com
Study Design. Correlation of locations of sacral insufficiency fractures is made to regions of
stress depicted by finite element analysis derived from biomechanical models of patient …
stress depicted by finite element analysis derived from biomechanical models of patient …
[HTML][HTML] Multi-parametric MRI and texture analysis to visualize spatial histologic heterogeneity and tumor extent in glioblastoma
Background Genetic profiling represents the future of neuro-oncology but suffers from
inadequate biopsies in heterogeneous tumors like Glioblastoma (GBM). Contrast-enhanced MRI (…
inadequate biopsies in heterogeneous tumors like Glioblastoma (GBM). Contrast-enhanced MRI (…
[HTML][HTML] Prolonged inflammation leads to ongoing damage after spinal cord injury
…, L Schutz, B Marzec-Kotarska, GJ Stanisz, JP Karis… - PloS one, 2020 - journals.plos.org
The pathogenesis of spinal cord injury (SCI) remains poorly understood and treatment remains
limited. Emerging evidence indicates that post-SCI inflammation is severe but the role of …
limited. Emerging evidence indicates that post-SCI inflammation is severe but the role of …
Improved image quality and detection of acute cerebral infarction with PROPELLER diffusion-weighted MR imaging
KP Forbes, JG Pipe, JP Karis, JE Heiserman - Radiology, 2002 - pubs.rsna.org
PURPOSE: To compare periodically rotated overlapping parallel lines with enhanced
reconstruction (PROPELLER) multishot fast spin-echo diffusion-weighted magnetic resonance (MR…
reconstruction (PROPELLER) multishot fast spin-echo diffusion-weighted magnetic resonance (MR…
Brain imaging in the unsedated pediatric patient: comparison of periodically rotated overlapping parallel lines with enhanced reconstruction and single-shot fast spin …
KP Forbes, JG Pipe, JP Karis… - American Journal …, 2003 - Am Soc Neuroradiology
BACKGROUND AND PURPOSE: Periodically rotated overlapping parallel lines with enhanced
reconstruction (PROPELLER or PROP) is an effective means of compensating for head …
reconstruction (PROPELLER or PROP) is an effective means of compensating for head …