Results 101 to 110 of about 7,705 (226)

A method for geometrical verification of dynamic intensity modulated radiotherapy using a scanning electronic portal imaging device. [PDF]

, 2002
In order to guarantee the safe delivery of dynamic intensity modulated radiotherapy (IMRT), verification of the leaf trajectories during the treatment is necessary.
Smitsmans, Monique H P, Gilhuijs, Kenneth G A, van Herk, Marcel, Van Herk, Marcel; id_orcid, Ploeger, Lennert S   +4 more
core   +3 more sources

A Reversible Clearing Strategy Enables Robust Label‐Free Phase Imaging of Thick Tissues

Laser &Photonics Reviews, EarlyView.
The principle of a reversible clearing strategy via glycerol and tartrazine solution (GTS) for robust whole‐slide label‐free phase imaging of thick tissue slices via high‐throughput Fourier ptychographic microscopy (FPM) and lensless digital holographic microscopy (LDHM). ABSTRACT Thick biological specimens impose strong scattering and attenuation that
Mikołaj Krysa, Anna Chwastowicz, Małgorzata Lenarcik, Paweł Matryba, Piotr Zdańkowski, Maciej Trusiak   +5 more
wiley   +1 more source

Research on Position Verification of Multi-Leaf Collimator (MLC) and Dose Verification Based on Electronic Portal Imaging Device

Zhongguo yiliao qixie zazhi
ObjectiveA quality control (QC) system based on the electronic portal imaging device (EPID) system was used to realize the Multi-Leaf Collimator (MLC) position verification and dose verification functions on Primus and VenusX accelerators.
Jianfeng SUI, Jiawei SUN, Kai XIE, Liugang GAO, Tao LIN, Xinye NI   +5 more
doaj   +1 more source

Dosimetric Performance of A-Si Electronic Portal Imaging Devices

International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 2016
The majority of EPID dosimetry literature discusses response linearity and the so-called image lag and ghosting effects despite the lack of a common definition of these quantities. However, the results of these studies are generally not consistent, and it is often difficult to compare the results from different studies. We present here a detailed study
Alshanqity, M, Nisbet, A
openaire   +3 more sources

The Application of Telemedicine in Surgery

Med Research, EarlyView.
This figure provides an overview of the content presented in this article. Telemedicine is integrated throughout the entire surgical workflow, with distinct applications across the preoperative, intraoperative, and postoperative phases. These applications are enabled by a suite of supporting technologies, while the associated implementation challenges ...
Yufan Yang, Chang Liu, Xue Sun, Yiting Wang, Minghui Zhao, Shuya Jiang, Haoling Zhang, Wangzheqi Zhang, Wenwen Shi   +8 more
wiley   +1 more source

Electronic portal imaging device dosimetry in intensity modulated radiation therapy applications. [PDF]

, 2006
Electronic Portal Imaging Devices (EPIDs) can be used for dosimetric purposes, provided that an appropriate dosimetric calibration is used. However, in most studies published so far, transmitted dose maps, measured using EPIDs, are used under limited ...
Mohammadi, Mohammad
core  

Preclinical Efficacy and Safety Evaluation of a Novel Controlled‐Expansion ePTFE‐Covered TIPS Stent in a Swine Model

Portal Hypertension &Cirrhosis, EarlyView.
This preclinical study evaluated a novel controlled‐expansion expanded polytetrafluoroethylene (ePTFE)‐covered transjugular intrahepatic portosystemic shunt (TIPS) stent in 11 swine, demonstrating 100% technical success, excellent deployability, and durable 6‐month angiographic patency without thrombosis, migration, fracture, or device‐related toxicity.
Yi Xiang, Qi Zhang, Chuan Liu, Jiawei Zhang, Qingqiao Zhang, Changsheng Shi, Chunze Zhou, Yudong Zhang, Hongliang He, Hao Xie, Hui Shi, Haijian Guo, Wenjing Liu, Muqing Lin, Huajie Yu, Xiaolong Qi   +15 more
wiley   +1 more source

Evaluation of the mechanical alignment of a linear accelerator with an electronic portal imaging device (EPID) [PDF]

, 2000
Mechanical misalignment of a medical linear accelerator can be caused by any combination of source position displacement relative to the collimator rotational axis, collimator jaw asymmetry, or when the rotational axes of the gantry and the collimator do
Van Doorn, T., Liu, G., Bezak, E.
core  

Biomaterial‐Integrated Electroporation for Therapeutic Delivery: From Gene Editing to Tumor Ablation and Immune Modulation

Small, EarlyView.
Biomaterial‐integrated electroporation establishes a programmable therapeutic interface that coordinates electric‐field modulation, transient or irreversible membrane permeabilization, cargo stabilization, and immune remodeling. This Review highlights how nanocarriers, hydrogels, and bioelectronic interfaces expand electroporation from conventional ...
Binbin Ji, Zhuozhuo Wu, Yuyue Jiang, Xiaoyu Liu, Jingfeng Li, Fengkuo Xu, Chaojie Li, Qungang Shan, Ziyin Wang, Junhao Wang, Wei Huang, Yaping Zhuang, Wenguo Cui, Zhongmin Wang   +13 more
wiley   +1 more source

Small field measurements using electronic portal imaging device

Biomedical Physics & Engineering Express
Abstract Purpose/Objective. Small-field measurement poses challenges. Although many high-resolution detectors are commercially available, the EPID for small-field dosimetry remains underexplored. This study aimed to evaluate the performance of EPID for small-field measurements and to derive tailored correction factors ...
A Aziz Sait, SA Yoganathan, Glenn W Jones, Tusar Patel, Nikhil Rastogi, SP Pandey, Sunil Mani, Raghavendiran Boopathy   +7 more
openaire   +2 more sources