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IMRT Therapy, or Intensity-Modulated Radiation Therapy, is an advanced form of radiation treatment used to precisely deliver radiation to cancerous tumors while minimizing damage to surrounding healthy tissues. It is a highly sophisticated external beam radiation technique that represents a significant evolution from conventional 3D conformal radiation therapy. Unlike older methods that deliver a uniform dose of radiation across the entire treatment field, IMRT uses computer-controlled linear accelerators to deliver radiation beams of varying intensities. This allows the radiation oncologist to "sculpt" the radiation dose to precisely conform to the complex, three-dimensional shape of the tumor, even if it is irregularly shaped or located near critical organs. Before IMRT treatment begins, a detailed planning process is undertaken. This involves extensive imaging, such as CT, MRI, and PET scans, to create a precise 3D map of the tumor and adjacent healthy structures. Medical physicists and dosimetrists then work with the radiation oncologist to design a treatment plan that uses multiple radiation beams from different angles. Each beam's intensity is adjusted (modulated) in real-time, creating a highly customized dose distribution that delivers a high dose to the tumor while "sparing" nearby sensitive organs and tissues. The benefits of IMRT are particularly significant for tumors located in challenging areas, such as those in the head and neck, prostate, brain, and lungs, where critical structures (like the spinal cord, salivary glands, or optic nerves) are in close proximity to the tumor. By delivering a more focused and conformal dose, IMRT can potentially reduce treatment-related side effects, improve patient tolerance to radiation, and allow for higher, more effective doses to be delivered to the tumor, ultimately enhancing treatment efficacy and improving patient quality of life.
As a leading IMRT specialist in Gurgaon Sector 51, Dr. Priyanka Singh uses intensity-modulated radiation therapy to deliver highly targeted treatment. This approach helps protect healthy tissues while effectively treating cancer, providing patients with a safer and more comfortable experience during their therapy.
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