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Radiostereometric Analysis
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D059869 |
[Methods for performing three-dimensional measurement and motion analysis using stereoscopic radiographs.
] |
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Radiosurgery
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D016634 |
[A type of radiosurgery performed with a LINAC radiosurgery system mounted on a robotic manipulator.
, A radiological stereotactic technique developed for cutting or destroying tissue by high doses of radiation in place of surgical incisions. It was originally developed for neurosurgery on structures in the brain and its use gradually spread to radiation surgery on extracranial structures as well. The usual rigid needles or probes of stereotactic surgery are replaced with beams of ionizing radiation directed toward a target so as to achieve local tissue destruction.
] |
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Radiotherapy
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D011878 |
[The use of IONIZING RADIATION to treat malignant NEOPLASMS and some benign conditions.
] |
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Radiotherapy Dosage
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D011879 |
[The total amount of radiation absorbed by tissues as a result of radiotherapy.
] |
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Radiotherapy Planning, Computer-Assisted
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D011880 |
[Computer-assisted mathematical calculations of beam angles, intensities of radiation, and duration of irradiation in radiotherapy.
] |
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Radiotherapy Setup Errors
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D061106 |
[Mistakes committed in the preparations for radiotherapy, including errors in positioning of patients, alignment radiation beams, or calculation of radiation doses.
] |
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Radiotherapy, Adjuvant
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D018714 |
[Radiotherapy given to augment some other form of treatment such as surgery or chemotherapy. Adjuvant radiotherapy is commonly used in the therapy of cancer and can be administered before or after the primary treatment.
] |
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Radiotherapy, Computer-Assisted
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D011881 |
[Computer systems or programs used in accurate computations for providing radiation dosage treatment to patients.
] |
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Radiotherapy, Conformal
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D020266 |
[A therapy using IONIZING RADIATION where there is improved dose homogeneity within the tumor and reduced dosage to uninvolved structures. The precise shaping of dose distribution is achieved via the use of computer-controlled multileaf collimators.
] |
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Radiotherapy, High-Energy
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D011882 |
[Radiotherapy using high-energy (megavolt or higher) ionizing radiation. Types of radiation include gamma rays, produced by a radioisotope within a teletherapy unit; x-rays, electrons, protons, alpha particles (helium ions) and heavy charged ions, produced by particle acceleration; and neutrons and pi-mesons (pions), produced as secondary particles following bombardment of a target with a primary particle.
] |
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Radiotherapy, Image-Guided
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D061089 |
[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.
] |
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Radiotherapy, Intensity-Modulated
|
D050397 |
[An arc-based approach to the delivery of intensity-modulated radiotherapy that uses a fan-beam of radiation in conjunction with a binary multileaf collimator.
, An approach of delivering intensity-modulated radiotherapy where dosage beams are delivered concurrently with gantry rotation.
, CONFORMAL RADIOTHERAPY that combines several intensity-modulated beams to provide improved dose homogeneity and highly conformal dose distributions.
] |
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Radium
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D011883 |
[A radioactive element of the alkaline earth series of metals. It has the atomic symbol Ra and atomic number 88. Radium is the product of the disintegration of URANIUM and is present in pitchblende and all ores containing uranium. It is used clinically as a source of beta and gamma-rays in radiotherapy, particularly BRACHYTHERAPY.
] |
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Radius
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D011884 |
[The outer shorter of the two bones of the FOREARM, lying parallel to the ULNA and partially revolving around it.
] |
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Radius Fractures
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D011885 |
[Fractures of the RADIUS.
] |
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Radon
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D011886 |
[A naturally radioactive element with atomic symbol Rn, and atomic number 86. It is a member of the noble gas family found in soil, and is released during the decay of RADIUM.
] |
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Radon Daughters
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D017687 |
[Short-lived radioactive decay products of radon that include 216-Po, 214-Pb, 214-Bi, and 214-Po. They have an effective half-life of about 30 minutes and are solids that can deposit on the bronchial airways during inhalation and exhalation. This results in exposure of the respiratory airways to alpha radiation and can lead to diseases of the respiratory system, including lung cancer. (From Casarett and Doull's Toxicology, 4th ed, p740)
] |
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Raffinose
|
D011887 |
[A trisaccharide occurring in Australian manna (from Eucalyptus spp, Myrtaceae) and in cottonseed meal.
] |
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Rafoxanide
|
D011888 |
[Veterinary anthelmintic for grazing animals; used to treat fluke, hookworm and other infestations.
] |
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Rage
|
D011889 |
[Fury; violent, intense anger.
] |
