Results 11 to 20 of about 1,697 (196)

MR-Guided Radiotherapy in Oesophageal Cancer: From Principles to Practice—A Narrative Review [PDF]

Current Oncology
Oesophageal cancer remains a significant global health burden with poor survival outcomes despite multimodal treatment. Recent advances in magnetic resonance imaging (MRI) have opened opportunities to improve radiotherapy delivery.
Su Chen Fong, Eddie Lau, David S. Liu, Niall C. Tebbutt, Richard Khor, Trevor Leong, David Williams, Sergio Uribe, Sweet Ping Ng   +8 more
doaj   +2 more sources

Spine Stereotactic Body Radiation Therapy for a Patient With a Metallic Implant in Low-Field Magnetic Resonance-Guided Linear Accelerator: A Case Report [PDF]

Advances in Radiation Oncology
The rise in radiation therapy challenges facing the management of pain and neurologic symptoms from vertebral metastasis has paralleled advances in cancer treatment and patient prognosis.
Hiroki Nakayama, PhD, Hiroyuki Okamoto, PhD, Kae Okuma, MD, PhD, Ayaka Nagao, MD, Yuki Tsunoda, BSc, Satoshi Nakamura, PhD, Takahito Chiba, MSc, Tetsu Nakaichi, PhD, Miki Yonemura, PhD, Riki Oshika, MSc, Yuta Kobayashi, MSc, Hironori Kishida, MSc, Shoki Nakamura, MSc, Masato Nishitani, MSc, Shuka Nishina, MSc, Takumi Sakamoto, MSc, Hana Endo, BSc, Junichi Kuwahara, MSc, Yasunori Shuto, MSc, Masataka Ueda, MSc, Tomoya Kaneda, MD, PhD, Hiroshi Igaki, MD, PhD   +21 more
doaj   +2 more sources

Multi-institutional experience treating patients with cardiac devices on a 1.5 Tesla magnetic resonance-linear accelerator and workflow development for thoracic treatments [PDF]

Physics and Imaging in Radiation Oncology
Background and purpose: Patients with cardiac implantable electronic devices (CIED patients) are often ineligible for online magnetic resonance-guided radiotherapy (MRgRT), most likely due to the absence of established guidelines.
Rick Keesman, Erik van der Bijl, Linda G.W. Kerkmeijer, Neelam Tyagi, Osman Akdag, Jochem W.H. Wolthaus, Sandrine M.G. van de Pol, Juus L. Noteboom, Martijn P.W. Intven, Martin F. Fast, Astrid L.H.M.W. van Lier   +10 more
doaj   +2 more sources

Analysis of sagittal plane cine magnetic resonance imaging for measurement of pancreatic tumor residual motion during breath hold and evaluation of gating margins used in radiotherapy treatment. [PDF]

J Appl Clin Med Phys
Background and purpose: In pancreatic radiotherapy, residual tumor motion during treatment increases the risk of toxicity. Cine imaging acquired during magnetic resonance guided radiotherapy (MRgRT) enables real‐time treatment gating in response to ...
Phipps A, Robinson M, George B, Whyntie T.   +3 more
europepmc   +3 more sources

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

Journal of Medical Radiation Sciences
ABSTRACT Introduction Systematic and random errors in radiation dose delivery necessitate the use of planning target volume (PTV) margins to ensure adequate clinical target volume (CTV) treatment. Advances in magnetic resonance‐guided radiation therapy (MRgRT) have enabled improved imaging with
Sammi Peng, Tegan Courtot, Jessica Lye, Farshad Foroudi, Mark Tacey, Daryl Lim Joon, Michael Chao, Ee Siang Choong   +7 more
openaire   +2 more sources

Single institution experience of MRI-guided radiotherapy for thoracic tumors and clinical characteristics impacting treatment duty cycle [PDF]

Frontiers in Oncology
IntroductionMRI-guided radiotherapy (MRgRT) allows for direct motion management and real-time radiation treatment plan adaptation. We report our institutional experience using low strength 0.35T MRgRT for thoracic malignancies, and evaluate changes in ...
Joseph A. Miccio, Nicholas J. Potter, Anaum Showkat, Anaum Showkat, Min Yao, Sean Mahase, Michele Ferenci, Kaitlin Sisley, Amy Dailey, Jamie Knipple, Amy Blakely, Leonard Tuanquin, Mitchell Machtay   +12 more
doaj   +2 more sources

MR-Guided Adaptive Radiotherapy in Localized Prostate Cancer [PDF]

Technology in Cancer Research & Treatment
MR-guided radiotherapy (MRgRT) is novel treatment modality in Radiation Oncology that could allow a higher precision and tolerability of Radiation Treatments.
Andrea Gaetano Allegra MD, Luca Nicosia MD, Michele Rigo MD, Nicola Bianchi BS, Riccardo Filippo Borgese BS, Antonio De Simone BS, Niccolò Giaj-Levra PhD, Davide Gurrera BS, Stefania Naccarato BS, Edoardo Pastorello MD, Francesco Ricchetti MD, Gianluisa Sicignano BS, Ruggero Ruggieri BS, Filippo Alongi MD   +13 more
doaj   +2 more sources

Online adaptive MR-guided SBRT versus CT-based planning in pancreatic cancer: A single-center dosimetric comparative study. [PDF]

J Appl Clin Med Phys
Abstract Background Stereotactic body radiotherapy (SBRT) for pancreatic cancer is limited by the proximity of tumors to gastrointestinal (GI) organs, increasing the risk of toxicity. Magnetic resonance‐guided radiotherapy (MRgRT) offers potential advantages through superior soft tissue visualization, real‐time tumor tracking, and online adaptive ...
Kamel R, Gevaert T, Van den Berge D, De Ridder M.   +3 more
europepmc   +2 more sources

Detector-specific correction factors for small-field photon dosimetry in magnetic resonance-guided radiation therapy: A systematic review and meta-analysis. [PDF]

Med Phys
Abstract Background Accurate small‐field (SF) dosimetry is essential for Magnetic Resonance‐guided Radiation Therapy (MRgRT), particularly for stereotactic treatments. The static magnetic field (B‐field) alters detector response, necessitating detector‐specific correction factors kB,Qf,f$k_{B,Q}^{f,f}$ to ensure dosimetric accuracy.
Bedir ME, Khan AU, Culberson W.
europepmc   +2 more sources

Direct tumor visual feedback during free breathing in 0.35T MRgRT [PDF]

Journal of Applied Clinical Medical Physics, 2020
AbstractTo present a tumor motion control system during free breathing using direct tumor visual feedback to patients in 0.35 T magnetic resonance‐guided radiotherapy (MRgRT). We present direct tumor visualization to patients by projecting real‐time cine MR images on an MR‐compatible display system inside a 0.35 T MRgRT bore.
Taeho Kim, Benjamin C. Lewis, Alex Price, Thomas Mazur, H. Michael Gach, Justin C. Park, Bin Cai, Erin Wittland, Lauren Henke, Hyun Kim, Sasa Mutic, Olga Green   +11 more
openaire   +3 more sources