Intensity-Modulated Radiation Therapy (IMRT)
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DMC Sinai-Grace offers advanced treatment in radiation oncology. IMRT offers highly precise treatment that gives a more even dose of radiation with fewer “hot spots.” A control system pinpoints the tumor to reduce damage to surrounding tissue from excess radiation. A Varian iX linear accelerator with a multi-leaf collimator provides IMRT.

Benefits to patients

Patients report fewer side effects such as nausea, swelling or sunburn-like skin changes, than with traditional radiation.  As part of the Radiation Oncology system, an advanced, computerized patient management system provides special dosage safeguards, treatment planning and enhanced scheduling.

How it works

Treatment begins with a three-dimensional CT scan of the patient. These images are fed into a special computer system that helps carefully plan and track each patient’s treatment. The patient lies on a treatment table while the linear accelerator delivers beams of radiation to the tumor from various directions.

IMRT is ideal for treating irregularly shaped tumors. In previous technology, fewer beams were used. IMRT produces dozens of smaller, individual beams. Each beam can be programmed to give a specific dose based on the thickness of the tissue.

Real-time imaging is also used, so doctors can make adjustments to the beam placement and verify accuracy.

Cancers that are treated

IMRT can be used on cancers of the:

  • Breast
  • Prostate
  • Head
  • Neck
  • Thyroid
  • Lung
  • Liver
  • Brain


For more information about DMC Sinai-Grace Hospital’s cancer services or a referral to a Sinai-Grace oncologist, call 313-966-4800.