Megavoltage radiation therapy definition

Megavoltage radiation therapy or "MRT" means a clinical modality in which patients with cancer, other neoplasms, cerebrovascular system abnormalities, or certain benign conditions are treated with radiation which is delivered by a MRT unit.
Sample 1Sample 2Sample 3
Megavoltage radiation therapy or “MRT” means a clinical modality in which patients with cancer, other neoplasms, or cerebrovascular system abnormalities are treated with radiation which is delivered by an MRT unit.
Sample 1
Megavoltage radiation therapy or "MRT" means a clinical modality in which patients with cancer, other neoplasms, or cerebrovascular system abnormalities are treated with radiation which is delivered by a megavoltage radiation therapyMRT unit. (ee) "Megavoltage radiation therapyMRT program" means one or more MRT services operated at one or more geographic locations under the same administrative unit.
Sample 1

Examples of Megavoltage radiation therapy in a sentence

  • Megavoltage radiation therapy units should be depreciated over a period no shorter than that indicated by “Estimated Useful Lives of Depreciable Hospital Assets” published by the American Hospital Association.

  • Megavoltage radiation therapy for axial and inoperable giant-cell tumor of bone.

  • Megavoltage radiation therapy services, either on-site or physically connected, with a nominal beam energy of at least 6 MEV, including the capability to perform total body irradiation.

  • Megavoltage radiation therapy service" means a radiation therapy service which uses ionizing radiations with energy over one MeV.

  • Graduation will not be conditional upon a student achieving a pass mark in this course.2.1.4 Admissions Tests1.

  • Megavoltage radiation therapy equipment for external-beam therapy (e.g., linear accelerator or 60Co teletherapy unit).

Related to Megavoltage radiation therapy

  • Moving beam radiation therapy means radiation therapy with any planned displacement of radiation field or patient relative to each other, or with any planned change of absorbed dose distribution. It includes arc, skip, conformal, intensity modulation and rotational therapy.

  • Stray radiation means the sum of leakage and scattered radiation.

  • External beam radiation therapy means therapeutic irradiation in which the source of radiation is at a distance from the body.

  • Stationary beam radiation therapy means radiation therapy without displacement of one or more mechanical axes relative to the patient during irradiation.

  • Radiation therapist means a person, other than a Licensed Practitioner or Nuclear Medicine Technologist, who applies radiation to humans for therapeutic purposes under the supervision of a Licensed Practitioner;

  • Very high radiation area means an area, accessible to individuals, in which radiation levels from radiation sources external to the body could result in an individual receiving an absorbed dose in excess of 5 Gy (500 rad) in one hour at one meter from a source of radiation or one meter from any surface that the radiation penetrates.

  • High radiation area means an area, accessible to individuals, in which radiation levels from radiation sources external to the body could result in an individual receiving a dose equivalent in excess of one mSv (0.1 rem) in one hour at 30 centimeters from any source of radiation or 30 centimeters from any surface that the radiation penetrates.

  • Irradiation means the exposure of a living being or matter to ionizing radiation.

  • Radiation detector means a device which in the presence of radiation provides a signal or other indication suitable for use in measuring one or more quantities of incident radiation.

  • ionising radiation means the transfer of energy in the form of particles or electromagnetic waves of a wavelength of 100 nanometres or less or a frequency of 3 x 1015 hertz or more capable of producing ions directly or indirectly;

  • Radiation therapy simulation system means a radiographic or fluoroscopic x-ray system intended for localizing the volume to be exposed during radiation therapy and confirming the position and size of the therapeutic irradiation field.

  • Radiation means alpha particles, beta particles, gamma rays, X-rays, neutrons, high-speed electrons, high-speed protons, and other particles capable of producing ions. For purposes of these rules, ionizing radiation is an equivalent term. Radiation, as used in these rules, does not include nonionizing radiation, such as radiowaves or microwaves, visible, infrared, or ultraviolet light.

  • Radiation area means any area, accessible to individuals, in which radiation levels could result in an individual receiving a dose equivalent in excess of 0.05 mSv (0.005 rem) in 1 hour at 30 centimeters from the source of radiation or from any surface that the radiation penetrates.

  • Therapy means the administration of drugs or chemicals to remove toxic concentrations of metals from the body.

  • Generation Service means the sale of electricity, including ancillary services such as the provision of reserves, to a Customer by a Competitive Supplier.

  • Step therapy means a protocol or

  • Background radiation means radiation from cosmic sources; naturally occurring radioactive materials, including radon (except as a decay product of source or special nuclear material); and global fallout as it exists in the environment from the testing of nuclear explosive devices or from past nuclear accidents such as Chernobyl that contribute to background radiation and are not under the control of the licensee. “Background radiation” does not include sources of radiation from radioactive materials regulated by the agency.

  • Brachytherapy means a method of radiation therapy in which sealed sources are utilized to deliver a radiation dose at a distance of up to a few centimeters, by surface, intracavitary, or interstitial application.

  • Basic generation service or "BGS" means electric generation

  • COVID-19 symptoms means fever of 100.4 degrees Fahrenheit or higher, chills, cough, shortness of breath or difficulty breathing, fatigue, muscle or body aches, headache, new loss of taste or smell, sore throat, congestion or runny nose, nausea or vomiting, or diarrhea, unless a licensed health care professional determines the person’s symptoms were caused by a known condition other than COVID-19.

  • Radiation machine means any device capable of producing radiation except those devices with radioactive material as the only source of radiation.

  • Fluoroscopic imaging assembly means a subsystem in which X-ray photons produce a visual image. It includes the image receptor(s) such as the image intensifier and spot-film device, electrical interlocks, if any, and structural material providing linkage between the image receptor and diagnostic source assembly.

  • Electric generation service means the provision of retail

  • generating plant means the generating facility described in Schedule 1 as amended from time to time;

  • Leakage radiation means radiation emanating from the diagnostic source assembly except for:

  • Ionizing radiation means gamma rays, x-rays, alpha and beta particles, high speed electrons, protons, neutrons, and other nuclear particles;