Results 81 to 90 of about 144,582 (289)
Physics and Imaging in Radiation Oncology, 2020 Introduction: Radiotherapy treatment planning is a multi-criteria problem. Any optimization of the process produces a set of mathematically optimal solutions.
A. Kyroudi +5 more
doaj
Cohort-based T-SSIM Visual Computing for Radiation Therapy Prediction and Exploration [PDF]
, 2019 We describe a visual computing approach to radiation therapy (RT) planning, based on spatial similarity within a patient cohort. In radiotherapy for head and neck cancer treatment, dosage to organs at risk surrounding a tumor is a large cause of treatment toxicity.
arxiv +1 more source
Windows Setting for Low kVp Abdominal CT: Comparison to 120-kVp CT Images
대한영상의학회지, 2017 Purpose: The purpose of the study is to identify the optimal window level (WL) and window width (WW) to maximize visualization of the findings for low kVp abdominal CT images utilizing the automated tube voltage selection (ATVS) (which ...
Jun Sung Kim +7 more
doaj +1 more source
Estimation of Warfarin Dosage with Reinforcement Learning [PDF]
arXiv, 2021 In this paper, it has attempted to use Reinforcement learning to model the proper dosage of Warfarin for patients.The paper first examines two baselines: a fixed model of 35 mg/week dosages and a linear model that relies on patient data. We implemented a LinUCB bandit that improved performance measured on regret and percent incorrect.
arxiv
Extra Oral Periapical Radiography: A Review
Advances in Human Biology, 2014 Background: Intra oral periapical radiographs remain the backbone of diagnostic assessment of dento-facial pathologies. However, in some clinical situation like in developmentally disabled individuals, those with an exaggerated gag reflex, pediatric ...
Rachna Kaul, P S Shilpa
doaj
A mathematical aid decision tool for RT planning [PDF]
arXiv, 2009 It is possible to find the optimized radiation dose per session for a radiotherapy (RT) treatment, using a population dynamics model. This has already been done in a previous work for a protocol with 30 sessions and a fixed dose per session. Extending this model to other protocols, with a variable number of sessions, we could change the radiation ...
arxiv
0.71-Å resolution electron tomography enabled by deep learning aided information recovery [PDF]
arXiv, 2020 Electron tomography, as an important 3D imaging method, offers a powerful method to probe the 3D structure of materials from the nano- to the atomic-scale. However, as a grant challenge, radiation intolerance of the nanoscale samples and the missing-wedge-induced information loss and artifacts greatly hindered us from obtaining 3D atomic structures ...
arxiv
Stellar Proton Event-induced surface radiation dose as a constraint on the habitability of terrestrial exoplanets [PDF]
, 2019 The discovery of terrestrial exoplanets orbiting in habitable zones around nearby stars has been one of the significant developments in modern astronomy. More than a dozen such planets, like Proxima Centauri b and TRAPPIST-1 e, are in close-in configurations and their proximity to the host star makes them highly sensitive to stellar activity.
arxiv +1 more source
Masked Sinogram Model with Transformer for ill-Posed Computed Tomography Reconstruction: a Preliminary Study [PDF]
arXiv, 2022 Computed Tomography (CT) is an imaging technique where information about an object are collected at different angles (called projections or scans). Then the cross-sectional image showing the internal structure of the slice is produced by solving an inverse problem.
arxiv
Method for Creating and Detecting Hydrogen Sorption Sites Using Gamma Radiation [PDF]
arXiv, 2010 Using gamma radiation and volumetric analysis of desorbed gas, hydrogen gas bonding sites have been created and detected in select materials. Desorption of hydrogen was followed over a benign temperature-pressure range. The extent of active site formation depends on radiation dosage; quenching of sites occurs over prolonged heating at low pressures. An
arxiv