Results 21 to 30 of about 8,952 (260)

Development of a GPU-based Monte Carlo dose calculation code for coupled electron-photon transport

, 2010
Monte Carlo simulation is the most accurate method for absorbed dose calculations in radiotherapy. Its efficiency still requires improvement for routine clinical applications, especially for online adaptive radiotherapy.
Amitava Majumdar, Bielajew A F Hirayama H Nelson W R Rogers D W O, Briesmeister J F, Dongju Choi, Gu X, Gu X, Jacques R Taylor R Wong J McNutt T, Josep Sempau, Lensch H Strzodka R, Li J S, Li M, Ma C M, Men C, Nelson W R Hirayama H Rogers D W O, NVIDIA, Salvat F Fernández-Varea J M Baró J Sempau J, Salvat F Fernández-Varea J M Sempau J, Sempau J, Sharp G C, Steve B Jiang, Woodcock E Murphy T Hemmings P Longworth S, Xu F, Xuejun Gu, Xun Jia, Yan G R   +24 more
core   +1 more source

Advancing pediatric organ dose assessment in radioiodine therapy with ICRP pediatric mesh-type reference computational phantoms

Nuclear Engineering and Technology
The present study provides updated S values (rT ← thyroid) for 30 radiosensitive organs/tissues for pediatric patients undergoing radioiodine therapy with iodine-131, utilizing the pediatric mesh-type reference computational phantoms (MRCPs) very ...
Chansoo Choi, Bangho Shin, Soo Min Lee, Yeon Soo Yeom   +3 more
doaj   +1 more source

Organ and Effective Dose Coefficients for Cranial and Caudal Irradiation Geometries: Neutrons

EPJ Web of Conferences, 2017
With the introduction of new recommendations by ICRP Publication 103, the methodology for determining the protection quantity, effective dose, has been modified.
Veinot K.G., Eckerman K.F., Hertel N.E., Hiller M.M.   +3 more
doaj   +1 more source

Three-dimensional multifractal analysis of trabecular bone under clinical computed tomography [PDF]

, 2017
Purpose: An adequate understanding of bone structural properties is critical for predicting fragility conditions caused by diseases such as osteoporosis, and in gauging the success of fracture prevention treatments.
Baravalle, Rodrigo Guillermo, Delrieux, Claudio Augusto, Gómez, Juan Carlos, Lu, Yongtao, Stošić, Borko, Stošić, Tatijana, Thomsen, Felix Sebastian Leo   +6 more
core   +1 more source

A Monte Carlo study of organ and effective doses of cone beam computed tomography (CBCT) scans in radiotherapy [PDF]

, 2017
Cone-beam CT (CBCT) scans utilized for image guided radiation therapy (IGRT) procedures have become an essential part of radiotherapy. The aim of this study was to assess organ and effective doses resulting from new CBCT scan protocols (head, thorax, and
Abuhaimed, Abdullah, Martin, Colin J., Sankaralingam, Marimuthu   +2 more
core   +1 more source

PYRO-NN: Python Reconstruction Operators in Neural Networks [PDF]

, 2019
Purpose: Recently, several attempts were conducted to transfer deep learning to medical image reconstruction. An increasingly number of publications follow the concept of embedding the CT reconstruction as a known operator into a neural network. However,
Maier, Andreas K., Michen, Markus, Ploner, Stefan, Seitz, Stephan, Stimpel, Bernhard, Syben, Christopher   +5 more
core   +3 more sources

Machine Learning for Predicting Neutron Effective Dose

Applied Sciences
The calculation of effective doses is crucial in many medical and radiation fields in order to ensure safety and compliance with regulatory limits. Traditionally, Monte Carlo codes using detailed human body computational phantoms have been used for such ...
Ali A. A. Alghamdi
doaj   +1 more source

Simulations of a micro-PET System based on Liquid Xenon

, 2011
The imaging performance of a high-resolution preclinical microPET system employing liquid xenon as the gamma ray detection medium was simulated. The arrangement comprises a ring of detectors consisting of trapezoidal LXe time projection ionization ...
Andreyev, A., Bryman, D., Glister, J., Kurchaninov, L., Lu, P., Miceli, A., Muennich, A., Retiere, F., Sossi, V.   +8 more
core   +1 more source

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel, Timothy P. Siejka, Cassandra Marotta, Josh J. Y. Lee, Kelly Bertram, Terence J. O'Brien, Meng Law, Lucy Vivash, Ian H. Harding   +8 more
wiley   +1 more source

Dose coefficients for ICRP pediatric mesh-type reference computational phantoms under idealized external electron exposures

Nuclear Engineering and Technology
In the present study, a comprehensive dataset of dose coefficients for idealized external electron exposures has been established using the newly released ICRP-156 pediatric mesh-type reference computational phantoms (MRCPs) in conjunction with the ...
Chansoo Choi, Bangho Shin, Sungho Moon, Yeon Soo Yeom, Chan Hyeong Kim, Wesley E. Bolch   +5 more
doaj   +1 more source