Results 1 to 10 of about 23,142 (250)

Automated evaluation of organ sparing in prostate stereotactic body radiation therapy using dose-gradient metrics [PDF]

Physics and Imaging in Radiation Oncology
Background and purpose: Traditional dose-volume histogram (DVH) metrics used in radiotherapy plan evaluation lack spatial information and are sensitive to organ volume variations. This study investigated the use of Dose Gradient Curves (DGCs) as a robust,
Geert De Kerf, Michaël Claessens, Thibaut D’homme, Piet Dirix, Piet Ost, Dirk Verellen   +5 more
doaj   +2 more sources

Research Progress on Modification of Ultra - High Temperature Oxidation Resistant Iridium Coating [PDF]

Cailiao Baohu, 2022
Iridium is the most promising material for ultra - high temperature structure parts oxidation - resistant coatings in aerospace field due to its high melting point, strong corrosion resistance and low oxygen permeability under high temperature.
WANG Xin, ZHANG Ping, HU Zhen - feng, LIANG Xiu - bing
doaj   +1 more source

Machine learning-based treatment couch parameter prediction in support of surface guided radiation therapy

Technical Innovations & Patient Support in Radiation Oncology, 2022
Purpose: A fully independent, machine learning-based automatic treatment couch parameters prediction was developed to support surface guided radiation therapy (SGRT)-based patient positioning protocols.
Geert De Kerf, Michaël Claessens, Isabelle Mollaert, Wim Vingerhoed, Dirk Verellen   +4 more
doaj   +1 more source

Assessing the impact of adaptations to the clinical workflow in radiotherapy using transit in vivo dosimetry

Physics and Imaging in Radiation Oncology, 2023
Background and Purpose: Currently in-vivo dosimetry (IVD) is primarily used to identify individual patient errors in radiotherapy. This study investigated possible correlations of observed trends in transit IVD results, with adaptations to the clinical ...
Evy Bossuyt, Daan Nevens, Reinhilde Weytjens, Ahmed Taieb Mokaddem, Dirk Verellen   +4 more
doaj   +1 more source

A geometry and dose-volume based performance monitoring of artificial intelligence models in radiotherapy treatment planning for prostate cancer

Physics and Imaging in Radiation Oncology, 2023
Background and Purpose: Clinical Artificial Intelligence (AI) implementations lack ground-truth when applied on real-world data. This study investigated how combined geometrical and dose-volume metrics can be used as performance monitoring tools to ...
Geert De Kerf, Michaël Claessens, Fadoua Raouassi, Carole Mercier, Daan Stas, Piet Ost, Piet Dirix, Dirk Verellen   +7 more
doaj   +1 more source

Determination of Iridium and Rhodium in Copper Anode Slime by Inductively Coupled Plasma-Mass Spectrometry with Nickel Sulphide Fire Assay

Yankuang ceshi, 2023
BACKGROUND With the wide application of iridium and rhodium in aerospace, electronics, energy and other fields, it has become a very attractive metal in the world. In China, iridium and rhodium ore resources are relatively scarce with low grade, so it is
LIU Fangmei, GAN Cong, LIAO Binling, LUO Xiaobing, LAI Qiuxiang   +4 more
doaj   +1 more source

Comparing treatment uncertainty for ultra- vs. standard-hypofractionated breast radiation therapy based on in-vivo dosimetry

Physics and Imaging in Radiation Oncology, 2022
Background and purpose: Postoperative ultrahypofractionated radiation therapy (UHFRT) in 5 fractions (fx) for breast cancer patients is as effective and safe as conventionally hypofractionated RT (HFRT) in 15 fx, liberating time for higher-level daily ...
Yawo A.C. Fiagan, Evy Bossuyt, Melanie Machiels, Daan Nevens, Charlotte Billiet, Philip Poortmans, Thierry Gevaert, Dirk Verellen   +7 more
doaj   +1 more source

Evaluation of automated pre-treatment and transit in-vivo dosimetry in radiotherapy using empirically determined parameters

Physics and Imaging in Radiation Oncology, 2020
Background and purpose: First reports on clinical use of commercially automated systems for Electronic Portal Imaging Device (EPID)-based dosimetry in radiotherapy showed the capability to detect important changes in patient setup, anatomy and external ...
Evy Bossuyt, Reinhilde Weytjens, Daan Nevens, Sarah De Vos, Dirk Verellen   +4 more
doaj   +1 more source

In vivo dosimetry for patients with prostate cancer to assess possible impact of bladder and rectum preparation

Technical Innovations & Patient Support in Radiation Oncology, 2020
Purpose/objective: In all treatment sites of our radiotherapy network, in vivo dosimetry (PerFRACTION™) was fully implemented in February 2018. We hypothesized that additional help with bladder and rectum preparation by home nursing would improve ...
Yawo A.C. Fiagan, Evy Bossuyt, Daan Nevens, Piet Dirix, Frank Theys, Thierry Gevaert, Dirk Verellen   +6 more
doaj   +1 more source

Precision of image-guided spinal stereotactic ablative radiotherapy and impact of positioning variables

Physics and Imaging in Radiation Oncology, 2022
Background and purpose: Spinal stereotactic ablative body radiotherapy (SABR) requires high precision. We evaluate the intrafraction motion during cone-beam computed tomography (CBCT) guided SABR with different immobilization techniques.
Charlotte Billiet, Wim Vingerhoed, Steven Van Laere, Ines Joye, Carole Mercier, Piet Dirix, Daan Nevens, Peter Vermeulen, Paul Meijnders, Dirk Verellen   +9 more
doaj   +1 more source