Results 31 to 40 of about 8,952 (260)

Dosimetric Impact of a New Computational Voxel Phantom Series for the Japanese Atomic Bomb Survivors: Children and Adults

Radiation Research, 2019
One of the largest sources of data on radiation exposure in humans is the study of the atomic bomb survivors at Hiroshima and Nagasaki, Japan performed by the Radiation Effects Research Foundation (RERF). As part of their retrospective dosimetry efforts for the atomic bomb survivors, RERF published two core systems: Dosimetry System 1986 (DS86) and ...
Keith, Griffin, Colin, Paulbeck, Wesley, Bolch, Harry, Cullings, Stephen, Egbert, Sachiyo, Funamoto, Tatsuhiko, Sato, Akira, Endo, Nolan, Hertel, Choonsik, Lee   +9 more
openaire   +3 more sources

3d-SMRnet: Achieving a new quality of MPI system matrix recovery by deep learning

, 2019
Magnetic particle imaging (MPI) data is commonly reconstructed using a system matrix acquired in a time-consuming calibration measurement. The calibration approach has the important advantage over model-based reconstruction that it takes the complex ...
Baltruschat, Ivo Matteo, Griese, Florian, Grosser, Mirco, Knopp, Tobias, Szwargulski, Patryk, Werner, René   +5 more
core   +1 more source

High resolution in-vivo MR-STAT using a matrix-free and parallelized reconstruction algorithm [PDF]

, 2019
MR-STAT is a recently proposed framework that allows the reconstruction of multiple quantitative parameter maps from a single short scan by performing spatial localisation and parameter estimation on the time domain data simultaneously, without relying ...
Bernstein MA, Bruijnen T, MATLAB, Nocedal J, Valenberg W   +4 more
core   +2 more sources

Evidence of Iron Accumulation in Cerebral Adrenoleukodystrophy: A Potential Novel Disease Mechanism

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT In this first application of Quantitative Susceptibility Mapping Source Separation to cerebral adrenoleukodystrophy, we uncovered alterations in iron and myelin within lesions and normal appearing white matter. As validation, we demonstrate abnormal iron accumulation in those same compartments within primary brain tissue.
Christina L. Nemeth, Mert Sisman, Jinwei Zhang, Hyeong‐geol Shin, Xu Li, Bela Turk, Ali Fatemi, Thanh Nguyen, Eric Mallack   +8 more
wiley   +1 more source

Dose coefficients for the ICRP pediatric mesh-type reference computational phantoms under idealized external photon exposure geometries

Nuclear Engineering and Technology
The International Commission on Radiological Protection (ICRP) recently released the pediatric mesh-type reference computational phantoms (MRCPs) through ICRP Publication 156 to overcome the limitations of the pediatric voxel-type reference computational
Chansoo Choi, Bangho Shin, Yeon Soo Yeom, Wesley E. Bolch, Chan Hyeong Kim   +4 more
doaj   +1 more source

IDAC-Dose 2.1, an internal dosimetry program for diagnostic nuclear medicine based on the ICRP adult reference voxel phantoms

EJNMMI Research, 2017
Background To date, the estimated radiation-absorbed dose to organs and tissues in patients undergoing diagnostic examinations in nuclear medicine is derived via calculations based on models of the human body and the biokinetic behaviour of the ...
Martin Andersson, Lennart Johansson, Keith Eckerman, Sören Mattsson   +3 more
doaj   +1 more source

Paramagnetic Rim Lesions Are Associated With Trans‐Synaptic Degeneration of the Visual Pathway in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Retrograde trans‐synaptic degeneration (rTSD) from posterior visual pathway lesions in multiple sclerosis (MS) is characterized by hemi‐macular ganglion cell‐inner plexiform layer (GCIPL) thinning and contralateral visual field loss.
Abdul Jaber Tayem, Angel Liu, Sargis Manukyan, Mustafa Subhi, Elaina Luskin, Bryan Quah, Sreekanth Madhusoodhanan Nair, Arzu C. Has Silemek, Gabriela Zabala, Yujie Cui, Laura Locke, Paula Barreras, Marwa Kaisey, Vinicius Calsavara, Daniel S. Reich, Nancy L. Sicotte, Pascal Sati, Omar Al‐Louzi   +17 more
wiley   +1 more source

Normal‐Appearing White Matter Injury Mediates Chronic Deep Venous Hypoxia and Disease Progression in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore how cerebral hypoxia and Normal‐Appearing White Matter (NAWM) integrity affect MS lesion burden and clinical course. Methods Seventy‐nine MS patients, including 13 clinically isolated syndrome (CIS) patients and 66 relapsing–remitting multiple sclerosis (RRMS) patients, and 44 healthy controls (HCs) were recruited from ...
Xinli Wang, Huiying Wang, Zhizheng Zhuo, Ai Guo, Ke Lv, Decai Tian, Chao Chai, Yunyun Duan, Shuang Xia   +8 more
wiley   +1 more source

Visual Quality Enhancement in Optoacoustic Tomography using Active Contour Segmentation Priors

, 2016
Segmentation of biomedical images is essential for studying and characterizing anatomical structures, detection and evaluation of pathological tissues.
Deán-Ben, Xosé Luís, Mandal, Subhamoy, Razansky, Daniel   +2 more
core   +1 more source

Association Between Motor Pathway Damage and Motor Deficit in Upper and Lower Limb in People With MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Corticospinal tract damage is common in people with MS, but the degree of clinical symptoms varies. We hypothesize that corticospinal tract lesions are more extensive and severe in people with MS with motor impairments in both upper and lower limbs.
Mathilde Liffran, Malo Gaubert, Alice Dufey, Elise Bannier, Audrey Rico, Jean‐Christophe Ferré, Raphaël Chouteau, Laure Michel, Emmanuelle Le Page, Virginie Callot, Bertrand Audoin, Sarah Demortière, Benoît Combès, Anne Kerbrat   +13 more
wiley   +1 more source