Results 91 to 100 of about 1,121,145 (324)

Radiation exposure during orthodontic treatment: risk to children and adolescents

Acta Odontologica Scandinavica
Objectives: To estimate radiation risk to children and adolescents during orthodontic treatment by retrieving number and type of radiographs from the patient records. Material and methods: Radiographs, along with justifications for radiation exposure,
Christina Stervik, Agneta Lith, Annika Ekestubbe   +2 more
doaj   +1 more source

Risk Prediction Models for Recurrence After Curative Treatment of Early‐Stage or Locally Advanced Lung Cancer: A Systematic Review

Aging and Cancer, EarlyView.
This systematic review synthesizes prognostic models for survival and recurrence in resected non‐small cell lung cancer. While many models demonstrate moderate to good discrimination, few are externally validated and reporting quality is variable, limiting clinical applicability and highlighting the need for robust, transparent model development ...
Evangeline Samuel, S. Tissera, E. Paul, J. Zalcberg, R. G. Stirling   +4 more
wiley   +1 more source

Impact of radiopacified bone cement on radiotherapy dose calculation

Physics and Imaging in Radiation Oncology, 2020
Background and purpose: Radiopacifiers are introduced to bone cements to provide the appearance of bone in kilovoltage (kV) radiographic images. For higher energy megavoltage (MV) radiotherapy treatment beams, however, these radiopacifiers do not cause a
Scott B. Crowe, Jane Bennett, Marika Lathouras, Craig M. Lancaster, Steven R. Sylvander, Benjamin Chua, Catherine S. Bettington, Charles Y. Lin, Tanya Kairn   +8 more
doaj   +1 more source

An Optimization Framework for Conformal Radiation Treatment Planning [PDF]

INFORMS Journal on Computing, 2007
An optimization framework for three-dimensional conformal radiation therapy is presented. In conformal therapy, beams of radiation are applied to a patient from different directions, where the aperture through which the beam is delivered from each direction is chosen to match the shape of the tumor, as viewed from that direction.
Gino J. Lim, Michael C. Ferris, Stephen J. Wright 0001, David M. Shepard, Matthew A. Earl   +4 more
openaire   +1 more source

Development of a Prediction Model for Progression Risk in High‐Grade Gliomas Based on Habitat Radiomics and Pathomics

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To investigate the value of constructing models based on habitat radiomics and pathomics for predicting the risk of progression in high‐grade gliomas. Methods This study conducted a retrospective analysis of preoperative magnetic resonance (MR) images and pathological sections from 72 patients diagnosed with high‐grade gliomas (52 ...
Yuchen Zhu, Yuxi Gong, Weilin Xu, Xingjian Sun, Gefei Jiang, Lei Qiu, Kexin Shi, Mengxing Wu, Yinjiao Fei, Jinling Yuan, Jinyan Luo, Yurong Li, Yuandong Cao, Minhong Pan, Shu Zhou   +14 more
wiley   +1 more source

Simulation as More Than a Treatment-Planning Tool: A Systematic Review of the Literature on Radiation Oncology Simulation-Based Medical Education.

International Journal of Radiation Oncology, Biology, Physics, 2018
PURPOSE Simulation-based medical education (SBME) is gaining prominence as a tool to meet Accreditation Council for Graduate Medical Education-mandated competency-based assessment educational goals.
M. Rooney, F. Zhu, E. Gillespie, J. Gunther, Ryan P. McKillip, M. Lineberry, A. Tekian, D. Golden   +7 more
semanticscholar   +1 more source

Lung Stereotactic Body Radiation Therapy (SBRT) dose gradient and PTV volume: a retrospective multi-center analysis

Radiation Oncology, 2019
Background The treatment of lung lesions with stereotactic body radiation therapy calls for highly conformal dose, which is evaluated by a number of metrics. Lung stereotactic body radiation therapy clinical trials constrain a plans gradient index.
David Hoffman, Irena Dragojević, Jeremy Hoisak, David Hoopes, Ryan Manger   +4 more
doaj   +1 more source

Comparison of transabdominal ultrasound and electromagnetic transponders for prostate localization. [PDF]

, 2010
The aim of this study is to compare two methodologies of prostate localization in a large cohort of patients. Daily prostate localization using B-mode ultrasound has been performed at the Nebraska Medical Center since 2000.
Enke, Charles A, Foster, Ryan D, Kerkhoff, Andrew, Kupelian, Patrick A, Li, Haisen S, Solberg, Timothy D, Willoughby, Twyla R   +6 more
core   +2 more sources

Spatial and Volumetric Characteristics of Glioblastoma: Associations With Clinical Presentation and Survival

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective We aim to comprehensively analyze how regional tumor and edema characteristics are associated with clinical presentations and survival outcomes in a large cohort of glioblastoma patients. Methods Patients with IDH‐wildtype glioblastoma who received brain MRI from 2010 to 2023 were included.
Daniel J. Zhou, Marc Jaskir, Julian Gal, Yombe Fonkeu, Christos Davatzikos, MacLean P. Nasrallah, Jose Garcia, Stephen J. Bagley, Arati Desai, Richard E. Phillips, Steven Tobochnik, Colin A. Ellis, James J. Gugger, Nishant Sinha, Joel M. Stein, Kathryn A. Davis   +15 more
wiley   +1 more source

Modelling the impact of treatment uncertainties in radiotherapy [PDF]

, 2002
Uncertainties are inevitably part of the radiotherapy process. Uncertainty in the dose deposited in the tumour exists due to organ motion, patient positioning errors, fluctuations in machine output, delineation of regions of interest, the modality of ...
Booth, Jeremy T.
core