Intensity-Modulated Radiation Therapy
Highly precise radiation with minimal side effects, targeting complex tumor shapes while sparing healthy tissue.
What is IMRT?
Intensity-Modulated Radiation Therapy (IMRT) is one of the most advanced forms of external beam radiation therapy. It uses computer-controlled linear accelerators to deliver precise radiation doses to a malignant tumor or specific areas within the tumor. IMRT allows the radiation dose to conform more precisely to the three-dimensional shape of the tumor by modulating the intensity of the radiation beam in multiple small volumes. Because of this precision, it is possible to focus higher radiation doses on regions within the tumor while minimizing the dose to surrounding normal critical structures. This significantly reduces the long-term side effects typically associated with conventional radiation therapy.
Benefits of IMRT
- ✓ Precisely targets tumor while sparing healthy tissue
- ✓ Reduces side effects compared to conventional radiation
- ✓ Effective for tumors near sensitive structures like the spinal cord or salivary glands
- ✓ Can deliver varying doses to different areas simultaneously (simultaneous integrated boost)
- ✓ Suitable for head & neck, prostate, breast, and brain cancers
How IMRT Works
During IMRT, the linear accelerator moves around the patient, delivering radiation from many angles. At each angle, the intensity of the radiation beam is varied (modulated) using computer-controlled multi-leaf collimators. This creates a highly customized dose distribution that maximizes treatment to the tumor and minimizes exposure to surrounding healthy tissue. A highly sophisticated software plans the exact dose distribution before the first session.
Suitable For
Frequently Asked Questions
Is IMRT painful?
No, the radiation treatment itself is completely painless and invisible, much like getting a standard X-ray. You won't feel anything while the machine is delivering the radiation.
How long does an IMRT session take?
A typical IMRT session lasts about 15 to 30 minutes. Most of this time is spent perfectly positioning you on the treatment table. The actual radiation delivery only takes a few minutes.
What are the common side effects of IMRT?
Side effects depend on the area being treated. However, because IMRT is so precise, side effects are generally milder than traditional radiation. Common mild effects include fatigue and localized skin irritation.
How many IMRT sessions will I need?
This varies based on the type and stage of cancer, but typically, IMRT is given 5 days a week for 5 to 8 weeks.
Get IMRT Treatment in Hyderabad
Consult Dr. Rahul DL for expert IMRT treatment at Apollo Hospital.