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Magnetic resonance image guidance in external beam radiation therapy planning and delivery. 2017

Ilamurugu Arivarasan, and Chandrasekaran Anuradha, and Shanmuga Subramanian, and Ayyalusamy Anantharaman, and Velayudham Ramasubramanian
Department of Radiation Oncology, Yashoda Cancer Institute, Yashoda Hospitals, Nalgonda X Roads, Hyderabad, 500036, India. arivarasan2016@outlook.com.

The use of magnetic resonance (MR) imaging in radiation oncology is improving dramatically. This review article discusses the necessity of image guidance and how MR finds a significant place in radiotherapy planning and delivery. The challenges to and current solutions for an in-house MR simulation, dedicated MR simulator, estimation of electron density using MR image sets and development of MR-compatible treatment planning systems are presented. This article also reviews the feasibility, advantages and limitations of MR image-guided radiation therapy (MR-IGRT) and its drive toward the integration of radiation beams with MR technology. Specifications of Co-60 MR technology and three other MR-linac projects worldwide are presented. Online and real-time MR guidance is also discussed.

UI MeSH Term Description Entries
D011880 Radiotherapy Planning, Computer-Assisted Computer-assisted mathematical calculations of beam angles, intensities of radiation, and duration of irradiation in radiotherapy. Computer-Assisted Radiotherapy Planning,Dosimetry Calculations, Computer-Assisted,Planning, Computer-Assisted Radiotherapy,Calculation, Computer-Assisted Dosimetry,Calculations, Computer-Assisted Dosimetry,Computer Assisted Radiotherapy Planning,Computer-Assisted Dosimetry Calculation,Computer-Assisted Dosimetry Calculations,Dosimetry Calculation, Computer-Assisted,Dosimetry Calculations, Computer Assisted,Planning, Computer Assisted Radiotherapy,Radiotherapy Planning, Computer Assisted
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D053783 Magnetic Resonance Imaging, Interventional Minimally invasive procedures guided with the aid of magnetic resonance imaging to visualize tissue structures. Interventional Magnetic Resonance Imaging,MR Guided Interventional Procedures,MRI, Interventional,Magnetic Resonance Guided Interventional Procedures,Interventional MRI
D061089 Radiotherapy, Image-Guided The use of pre-treatment imaging modalities to position the patient, delineate the target, and align the beam of radiation to achieve optimal accuracy and reduce radiation damage to surrounding non-target tissues. Image-Guided Radiation Therapy,Radiotherapy Target Organ Alignment,Target Organ Alignment, Radiotherapy,Image Guided Radiation Therapy,Image-Guided Radiation Therapies,Image-Guided Radiotherapies,Image-Guided Radiotherapy,Radiation Therapies, Image-Guided,Radiation Therapy, Image-Guided,Radiotherapies, Image-Guided,Radiotherapy, Image Guided,Therapies, Image-Guided Radiation,Therapy, Image-Guided Radiation

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