Results 71 to 80 of about 649,932 (223)

RF-signaalin siirtomenetelmiä vastaanottokeloille magneettikuvauslaitteen ja lineaarikiihdyttimen integraatiossa [PDF]

, 2016
MR-Linac is an integration of a magnetic resonance imaging system and a linear accelerator. It is used to deliver image-guided radiation therapy treatments for patients with cancer.
Pusa, Jehki
core  

Technical Optimization of SyntheticMR for the Head and Neck on a 3T MR-Simulator and 1.5T MR-Linac: A Prospective R-IDEAL Stage 2a Technology Innovation Report

medRxiv
Objective: The purpose of this study was to optimize the technical tradeoffs associated with integrating the quantitative maps available from SyntheticMR into the head and neck adaptive radiation oncology workflow.
Lucas B McCullum, Samuel L. Mulder, Natalie A. West, Hayden Scott, Diana Carrasco Rojas, Zayne Belal, C. Dede, Warren Floyd, A. Ali, A. Mohamed, A. Dresner, E. Subashi, Dan Ma, R. Stafford, Ken-Pin Hwang, Clifton D Fuller   +15 more
semanticscholar   +1 more source

Magnetic Resonance Guided Radiation Therapy (MRgRT) Prostate Motion and Margins

Journal of Medical Radiation Sciences, EarlyView.
This study evaluated intra‐fractional prostate motion during MR‐guided radiotherapy to determine appropriate PTV margins for prostate cancer. Analysis of 18 patients resulted in calculated margins of 3.2 mm (AP), 1.7 mm (LR), and 3.2 mm (SI), supporting the potential for margin reduction with MRgRT. ABSTRACT Introduction Systematic and random errors in
Sammi Peng, Tegan Courtot, Jessica Lye, Farshad Foroudi, Mark Tacey, Daryl Lim Joon, Michael Chao, Ee Siang Choong   +7 more
wiley   +1 more source

Dosimetric comparison of MR-linac-based IMRT and conventional VMAT treatment plans for prostate cancer

Radiation Oncology, 2021
Background The aim of this study was to evaluate and compare the performance of intensity modulated radiation therapy (IMRT) plans, planned for low-field strength magnetic resonance (MR) guided linear accelerator (linac) delivery (labelled IMRT MRL plans)
Vanessa Da Silva Mendes, Lukas Nierer, Minglun Li, Stefanie Corradini, Michael Reiner, Florian Kamp, Maximilian Niyazi, Christopher Kurz, Guillaume Landry, Claus Belka   +9 more
doaj   +1 more source

First multicentre experience of SABR for lymph node and liver oligometastatic disease on the unity MR-Linac

Technical Innovations & Patient Support in Radiation Oncology, 2022
Summary: The treatment of oligometastatic disease using MR guidance is an evolving field. Since August 2018 patients are treated on a 1.5 Tesla MR-Linac (MRL).
Tomas M. Janssen, Katharine Aitken, Filippo Alongi, Aisling Barry, Uffe Bernchou, Simon Boeke, William A. Hall, Ali Hosni, Petra.S. Kroon, Marcel Nachbar, Hina Saeed, Ina M. Jürgenliemk-Schulz, Tine Schytte, Helena M. Verkooijen, Marlies.E. Nowee   +14 more
doaj   +1 more source

Optimising hypoxia PET imaging and its applications in guiding targeted radiation therapy for non‐small cell lung cancer: a scoping review

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 106-118, March 2025.
This review article reports that quantification of hypoxic volumes using PET in the pre‐radiation therapy setting is of prognostic value and indicative of treatment response in non‐small cell lung cancer. Abstract Introduction Non‐small cell lung cancer (NSCLC) is the leading cause of cancer‐related death. Definitive treatment includes chemotherapy and
Carol Marks, Michelle Leech
wiley   +1 more source

Enhanced MRI-guided radiotherapy with gadolinium-based nanoparticles: preclinical evaluation with an MRI-linac

Cancer Nanotechnology, 2020
Background The AGuIX® (NH TherAguix) nanoparticle has been developed to enhance radiotherapy treatment and provide strong MR contrast. These two properties have previously been investigated separately and progressed to clinical trial following a clinical
H. L. Byrne, G. Le Duc, F. Lux, O. Tillement, N. M. Holmes, A. James, U. Jelen, B. Dong, G. Liney, T. L. Roberts, Z. Kuncic   +10 more
doaj   +1 more source

Application of Continuous Positive Airway Pressure for Thoracic Respiratory Motion Management: An Assessment in a Magnetic Resonance Imaging–Guided Radiation Therapy Environment

Advances in Radiation Oncology, 2022
Purpose: Patient tolerability of magnetic resonance (MR)–guided radiation treatment delivery is limited by the need for repeated deep inspiratory breath holds (DIBHs).
Evan Liang, MD, Jennifer L. Dolan, PhD, Eric D. Morris, PhD, Jonathan Vono, RRT, Luisa F. Bazan, MD, Mei Lu, PhD, Carri K. Glide-Hurst, PhD   +6 more
doaj   +1 more source

Translation of dynamic contrast-enhanced imaging onto a magnetic resonance-guided linear accelerator in patients with head and neck cancer

Physics and Imaging in Radiation Oncology
Background and purpose: Magnetic resonance imaging – linear accelerator (MRI-linac) systems permit imaging of tumours to guide treatment. Dynamic contrast enhanced (DCE)-MRI allows investigation of tumour perfusion.
Michael J. Dubec, Michael Berks, James Price, Lisa McDaid, John Gaffney, Ross A. Little, Susan Cheung, Marcel van Herk, Ananya Choudhury, Julian C. Matthews, Andrew McPartlin, Geoff J.M. Parker, David L. Buckley, James P.B. O’Connor   +13 more
doaj   +1 more source

A randomized phase II trial of MR-guided prostate stereotactic body radiotherapy administered in 5 or 2 fractions for localized prostate cancer (FORT)

BMC Cancer, 2023
Background Ultra-hypofractionated regimens for definitive prostate cancer (PCa) radiotherapy are increasingly utilized due in part to promising safety and efficacy data complemented by greater patient convenience from a treatment course requiring fewer ...
Sydney Wolfe, Marshall A. Diven, Ariel E. Marciscano, Xi Kathy Zhou, A. U. Kishan, M. L. Steinberg, Joseph A. Miccio, Philip Camilleri, Himanshu Nagar   +8 more
doaj   +1 more source