Rather than having a single large radiation beam pass through the body, with IMRT the radiation is broken up into thousands of tiny beams, which enter the body from many angles and intersect on the tumor. As a result, IMRT allows precise external beam radiotherapy treatments, resulting in a higher dose to the tumor and a lower dose to the surrounding tissue.
Intensity Modulated Radiation Therapy. CT scans are obtained with the patient immobilized in the treatment position. Other imaging information from MRI scans or PET scans may be fused to the CT image. This information is analyzed by a sophisticated computer to precisely map the location of a cancer and its predicted areas of spread. Normal tissue organs at risk are also map. Nonuniform radiation beams are then aimed from several directions at the areas that need it, while trying to reduce the exposure of organs at risk.
IMRT is a form of three-dimensional conformal radiation therapy (3D-CRT) that links treatment planning and driver software to the actual treatment delivery devices. As a result, clinicians can determine and deliver an optimum plan of individualized radiation for each patient.
A newer form of radiotherapy, enabling more precise external beam radiotherapy treatment. Instead of having a single, large radiation beam pass through the body, IMRT breaks it up into thousands of thin beams, improving accuracy and minimizing harm to surrounding tissue.
Intensity modulated radiation therapy. A form of 3D therapy in which the machine delivering the radiation dose actually moves around the patient, permitting radiation of varying intensity to be beamed from several directions.
Intensity Modulated Radiation Therapy. A technique used to treat cancer. The patient is immobilized with a plastic net-like mask to assure no movement. The IMRT machine delivers 100-200 doses of radiation over 15 minutes. The machine moves to a certain position and deliver 15-30 shaped fields. It then moves to another position. These fields are shaped automatically in the treatment head of the machine; therefore, the cancer and lymph nodes are "painted" with dose.
IMRT is the state-of-the-art technology available for the delivery of external beam therapy. The IMRT process is similar whether the patient receives external beam in conjunction with a seed implant, external beam alone, or as salvage therapy following prostatectomy or cryosurgery.
IMRT or Intensity Modulated Radiation Therapy is a form of three-dimensional conformal radiation therapy (3D-CRT) that incorporates beam-shaping to dynamically reshape the outlines and intensity of the radiation field during cancer treatment. IMRT fits the dose of radiation to a target much better than conventional radiation therapy, and thereby minimizes the volume of surrounding normal tissue that is injured by treatment. While it appears that IMRT may produce fewer side effects than conventional radiation therapy, IMRT is not as spatially precise as radiosurgery. Because of this imprecision, a full course of IMRT treatment is typically administered over multiple treatment sessions (typically 20-30+).
an approach to radiation therapy allowing the treatment team to specify the tumor target dose and the amount of radiation allowable to the nearby tissues and uses sophisticated computer planning to arrive at acceptable equations; sophisticated hardware is also incorporated into this planning that allows the radiation intensity to be modulated up or down as the delivery system rotates around the patient - see our paper Targeting For Cure: Intensity Modulated Radiation Therapy
IMRT is a specialized form of external beam therapy that allows radiation to be shaped to fit your tumor.
Intensity Modulated Radiation Therapy. A type of radiation treatment that in some cases spares normal tissues such as the salivary glands.
Intensity Modulated Radiation Therapy. Computer controlled treatment that allows a radiation dose to be designed and delivered that spare critical organs and tissue, while giving high doses to tumors.
intensity modulated radiation therapy. A type of conformal radiation therapy which produces highly uniform dose distributions within target volumes , and distinct dose gradient at the edges of target volumes. In an IMRT treatment, each radiation field is divided into finite size pencil beams of differing intensities.
Intensity Modulated Radiation Therapy. The most recent state-of-the-art, computer-aided technique for delivering higher doses of radiation more accurately than either conventional External Beam Radiation of Conformal Radiation.
intensity modulated radiation therapy. an advanced method of conformal radiation therapy in which the beams are aimed from several directions and the intensity (strength) of the beams is controlled by computers. This allows more radiation to reach the treatment area while reducing the radiation to healthy tissues. (See also conformal radiation therapy.)
The intensity of the radiation can be changed during treatment to spare adjoining normal tissue and increase the dose to the tumor.
a type of 3-dimensional radiation therapy that uses computer-generated images to show the size and shape of the tumor. Thin beams of radiation of different intensities are aimed at the tumor from many angles. This type of radiation therapy reduces the damage to healthy tissue near the tumor and is being explored in mesothelioma.
