IMRT


Also found in: Acronyms.

IMRT

Intensity-modulated radiation therapy Radiation oncology A format for delivering high-dose RT to regions–eg, nasopharynx, that are surrounded by radiation-sensitive areas; in IMRT, a broad radiation field is divided into hundreds of small pencil beams, the intensity of which is determined by computer optimization

IMRT

Abbreviation for intensity modulated radiation therapy.
References in periodicals archive ?
Patients groups: Twenty breast cancer patients with left-sided post-mastectomy have selected for PMRT both 3D-CRT and IMRT techniques in Eclipse treatment planning system dose calculation simulation.
He said that IMRT technology would be used for early stages of cancer I, II whereas IMRT uses linear accelerators to safely and painlessly deliver precise radiation doses to a tumor while minimizing the dose to surrounding normal tissue.
reported results of using image guidance in IMRT for reirradiation with 2-year rates of control of 65%.
Selection of the optimal beam direction significantly improves the quality of IMRT treatment both for tumor coverage and in OAR sparing [4, 5, 7-11].
The trial found that IMRT could safely be given to the pelvis - a common site for prostate cancer cells to spread - to help stop the disease going further.
But the new study showed that when using IMRT rather than conventional radiotherapy, only 8% to 16% suffered issues with their bladder or bowel.
It is considered that the benefit of the quality of life of patients irradiated by IMRT technique through the attenuation of xerostomia is more common in more than 6 months after completion of radiotherapy [5].
Helical tomotherapy is a dedicated intensity modulated radiation therapy (IMRT) system with on-board imaging capability with megavoltage computerized tomography (MVCT) that differs from conventional treatment units, and the imaging capacity conferred by the CT component allows targeted regions to be visualized prior to, during, and immediately after each treatment.
The RTOG 0617 trial included threedimensional conformal radiotherapy (3D-CRT) and standard intensity-modulated radiation therapy (IMRT), and higher doses (74 Gy) delivered to the planning tumor volume (PTV), including the subclinical area, may have been toxic to normal tissue.
Diabetes (P = 0.01), skin graft and/or vascularized flap reconstruction (P = 0.01), grade [greater than or equal to] 2 radiation dermatitis (P = 0.02), and 3D conformal RT relative to intensity-modulated radiation therapy (IMRT) or proton therapy (P = 0.008) were associated with an increased risk of any wound complication.
Objective: To identify the association between radiation dose volume and acute hematological toxicity (HT) in postoperative gynecological cancer patients receiving whole pelvic radiotherapy (RT) or intensity-modulated RT (IMRT), a principal component regression model was used to calculate HT.