dict.md logo
Choose languages of interest
Add further languages:
Add all languages
Lymphatic Irradiation definition: External or interstitial irradiation to treat lymphomas (e.g., Hodgkin's and non-Hodgkin's lymphomas) and lymph node metastases and also some autoimmune diseases, such as rheumatoid arthritis.
Whole-Body Irradiation definition: Irradiation of the whole body with ionizing or non-ionizing radiation. It is applicable to humans or animals but not to microorganisms.
total-body irradiation definition: Radiation therapy to the entire body. Usually followed by bone marrow or peripheral stem cell transplantation.
Cranial Irradiation definition: The exposure of the head to roentgen rays or other forms of radioactivity for therapeutic or preventive purposes.
Radiosurgery definition: 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.
stereotaxic radiosurgery definition: (STAIR-ee-o-TAK-tik...) A radiation therapy technique involving a rigid head frame that is attached to the skull; high-dose radiation is administered through openings in the head frame to the tumor while decreasing the amount of radiation given to normal brain tissue. This procedure does not involve surgery.
radiosurgery definition: A radiation therapy technique that delivers radiation directly to the tumor while sparing the healthy tissue.
gamma knife definition: Radiation therapy in which high-energy rays are aimed at a tumor from many angles in a single treatment session.
whole body irradiation dosage definition: total amount of radiation absorbed by the entire body; for radiation that is administered therapeutically use RADIATION THERAPY DOSAGE.
Hemibody Irradiation definition: Irradiation of one half or both halves of the body in the treatment of disseminated cancer or widespread metastases. It is used to treat diffuse metastases in one session as opposed to multiple fields over an extended period. The more frequent treatment modalities are upper hemibody irradiation (UHBI) or lower hemibody irradiation (LHBI). Less common is mid-body irradiation (MBI). In the treatment of both halves of the body sequentially, hemibody irradiation permits radiotherapy of the whole body with larger doses of radiation than could be accomplished with WHOLE-BODY IRRADIATION. It is sometimes called "systemic" hemibody irradiation with reference to its use in widespread cancer or metastases. (P. Rubin et al. Cancer, Vol 55, p2210, 1985)
Laser Therapy, Low-Level definition: Treatment using irradiation with LASER light of low power intensity so that the effects are not due to heat, as in LASER THERAPY. These non-thermal effects are thought to be mediated by a photochemical reaction that alters CELL MEMBRANE PERMEABILITY, leading to increased mRNA synthesis and CELL PROLIFERATION. Low-level laser therapy has been used for a wide variety of conditions, but most frequently for wound healing and pain control.
Low Emission Laser Therapy definition: Use of low-emission laser therapy has been shown to reduce pain when applied directly to the painful area or to acupuncture points. The mechanism is unknown. It has also been shown to postpone post-traumatic neural degeneration. (from Kanner)
prophylactic cranial irradiation definition: (pro-fih-LAK-tik KRAY-nee-ul ir-ray-dee-AY-shun) Radiation therapy to the head to reduce the risk that cancer will spread to the brain.
Irradiation Shared Resource definition: The Irradiation Shared Resource provides Cancer Center investigators with support in the following areas: cell, tumor, specimen, animal irradiation for studies of radiobiologic mechanisms or to suppress immune responses in experimental animals, as well as to sterilize various cell, vaccine and drug preparations; radiotherapy models development and treatment planning, laser and photodynamic therapy, in vivo imaging, in vivo fluorescent imaging, atomic absorption spectroscopy, DNA damage and other radiation assays, safety training and dosimetry measurements.
total nodal irradiation definition: Radiation therapy to the mantle field, the spleen, the lymph nodes in the upper abdomen, and the lymph nodes in the pelvic area.
Radiotherapy definition: The use of IONIZING RADIATION to treat malignant NEOPLASMS and some benign conditions.
radiation therapy definition: therapeutic use of ionizing and nonionizing radiation; for radioisotope therapy refer to RADIONUCLIDE THERAPY and narrower terms; for therapeutic radiation with visible, laser, or ultraviolet light, respectively refer to PHOTOTHERAPY, LASER THERAPY, or ULTRAVIOLET THERAPY and narrower terms.
radiotherapy definition: (RAY-dee-AY-shun) The use of high-energy radiation from x-rays, gamma rays, neutrons, and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy) or from materials called radioisotopes. Radioisotopes produce radiation and can be placed in or near the tumor or in the area near cancer cells. This type of radiation treatment is called internal radiation therapy, implant radiation, interstitial radiation, or brachytherapy. Systemic radiation therapy uses a radioactive substance, such as a radiolabeled monoclonal antibody, that circulates throughout the body.
Irradiation definition: Treatment with radiation, generally meaning exposure to ionizing radiation or radiation of wavelengths shorter than those of visible light.
Radiation Therapy definition: Treatment of a disease by means of exposure of the target or the whole body to radiation. Radiation therapy is often used as part of curative therapy and occasionally as a component of palliative treatment for cancer. Other uses include total body irradiation prior to transplantation.
irradiation definition: Émission des rayons d’un corps lumineux.
irradiation definition: Sorte d’effusion que l’on suppose opérée dans les images des corps lumineux et par laquelle leur diamètre apparent se trouve agrandi au-delà de la réalité.
irradiation definition: Tout mouvement qui se fait de l'intérieur vers l’extérieur dans un corps organisé.