Results 91 to 100 of about 29,680 (229)

Stereotactic body radiotherapy to the left lung in right lateral decubitus: A challenging case report

Journal of Applied Clinical Medical Physics, Volume 27, Issue 5, May 2026.
Abstract This case report describes a lung stereotactic body radiotherapy (SBRT) treatment complicated by the patient's inability to tolerate standard supine positioning, requiring simulation and delivery in the right lateral decubitus position. Five major workflow challenges were encountered involving patient positioning, 4DCT acquisition, treatment ...
Jochen Cammin, Elizabeth Manuel, Shifeng Chen, Zaker Rana, Matthew J. Ferris   +4 more
wiley   +1 more source

Fraction-variant beam orientation optimization for non-coplanar IMRT

, 2017
Conventional beam orientation optimization (BOO) algorithms for IMRT assume that the same set of beam angles is used for all treatment fractions. In this paper we present a BOO formulation based on group sparsity that simultaneously optimizes non ...
Nguyen, Dan, O'Connor, Daniel, Ruan, Dan, Sheng, Ke, Yu, Victoria   +4 more
core   +1 more source

Dosimetric Validation of Physical and Biological Indexes from the Dose-Volume Histogram for Evaluation of 3D-CRT and IMRT Techniques with VMAT Treatment Plan Techniques in Cervical Tumors from In-House Developed Software [PDF]

Iranian Journal of Medical Physics
Introduction:This study aims to investigate the Normal Tissue Complication Probability (NTCP) and Tumor Control Probability (TCP) of cervical cancer from Niemierko radiobiological model and compared with Lyman-Kutcher-Butcher (LKB) model’s effective ...
Sougoumarane Dashnamoorthy, Ebenezar Jeyasingh, VINDHYAVASINI PANDEY, Karthick Rajamanickam, Sachin S Kotur, Durga Prasad Sahoo   +5 more
doaj   +1 more source

Comprehensive Comparison of Progressive Optimization Algorithm Based Automatic Plan and Manually Planned Treatment Technique for Cervical-Thoracic Esophageal Cancers

Technology in Cancer Research & Treatment, 2020
Purpose: The purpose of the present study was first to apply the progressive optimization algorithm based automatic volumetric modulated arc therapy (POA-VMAT) technology to accelerate and improve the radiotherapy of cervicothoracic esophageal cancer ...
Yongqiang Zhou MS, Xiaojun Xiang PhD, Jianping Xiong PhD, Changfei Gong MS   +3 more
doaj   +1 more source

VMAT - volumetrična modulirana ločna terapija

Onkologija, 2012
Volumetrična modulirana ločna terapija (angl. Volumetric Modulated Arc Therapy, VMAT) je ena izmed najsodobnejših obsevalnih tehnik, ki jo od marca 2011 uporabljamo tudi v Sektorju radioterapije na Onkološkem inštitutu v Ljubljani. Temeljna značilnost VMAT je, da linearni pospeševalnik seva fotonski snop ves čas kroženja glave obsevalnika okoli ...
Kuduzovič, Emir, Peterlin, Primož, Strojan, Primož   +2 more
openaire   +3 more sources

Development and clinical deployment of an automated planning tool for prostate only and male whole pelvis plans based on multi‐criteria optimization

Journal of Applied Clinical Medical Physics, Volume 27, Issue 5, May 2026.
Abstract Background Multi‐criteria optimization (MCO) is an advanced optimization technique that can be applied to any problem with multiple objectives that may be conflicting. MCO has been available in commercial treatment planning systems (TPS) for several years now and has been applied to treatment planning of many anatomical locations in a variety ...
Kai Huang, Kai Wang, Adam Schrum, Eric Kusmaul, Erica Fisler, Mariana Guerrero   +5 more
wiley   +1 more source

Adding Logical Operators to Tree Pattern Queries on Graph-Structured Data

, 2012
As data are increasingly modeled as graphs for expressing complex relationships, the tree pattern query on graph-structured data becomes an important type of queries in real-world applications.
Jiang, Xiaorui, Zeng, Qiang, Zhuge, Hai
core   +2 more sources

Decoding the Cardiac Immune Microenvironment and Fibroblast Crosstalk in Radiotherapy Combined with Immunotherapy‐Induced Cardiac Fibrosis Based on Single‐Cell Transcriptomic Analysis

Advanced Science, Volume 13, Issue 25, 4 May 2026.
This study highlights that radioimmunotherapy drives crosstalk between fibroblasts and immune cells (especially macrophages) in the cardiac microenvironment, with IL‐6 as the key mediator, and tocilizumab alleviates cardiac fibrosis by targeting this interplay.
Yuxi Luo, Ying Yu, Zhimin Zeng, Yanxin Chen, Yali Yi, Zhiqin Lu, Fujuan Zeng, Peng Xu, Daya Luo, Leifeng Chen, Anwen Liu   +10 more
wiley   +1 more source

A multi-institutional survey evaluating patient related QA – phase II

Current Directions in Biomedical Engineering, 2017
In phase I of the survey a planning intercomparison of patient-related QA was performed at 12 institutions. The participating clinics created phantom based IMRT and VMAT plans which were measured utilizing the ArcCheck diode array.
Teichmann Tobias, Salz Henning, Schwedas Michael, Howitz Simon, Wiezorek Tilo   +4 more
doaj   +1 more source

Transformer‐Based Deep Learning Model for Predicting Recurrence in High‐Grade Glioma

Cancer Medicine, Volume 15, Issue 5, May 2026.
ABSTRACT Introduction The first year after treatment for high‐grade glioma (HGG) is recognized as the peak interval for recurrence. Accurate prediction of recurrence during this period is critical for timely management and early intervention. This study aimed to develop a fusion model that integrates MRI‐derived features with clinical variables ...
Xin Wang, Mingjun Ding, Dan Zong, Pudong Qian, Xia He   +4 more
wiley   +1 more source