Radiation therapy uses powerful beams of energy to target and destroy cancer cells. One of the most advanced types of radiation therapy is called intensity-modulated radiation therapy, or IMRT. This treatment sends radiation from many different angles to focus directly on the tumor, protecting the healthy tissue around it.
“IMRT allows us to use multiple beams from different angles to focus radiation exactly where it’s needed,” explained Dr. Maikel Botros, radiation oncologist and medical director of Blount Memorial Cancer Center. “By shaping the radiation to match the tumor’s form, we can improve effectiveness while reducing side effects.”
A more advanced form of IMRT called volumetric modulated arc therapy, or VMAT, makes treatment even faster. With VMAT, the machine moves around the patient in a smooth, continuous motion. “VMAT is particularly beneficial for complex cases, such as tumors in the head, neck, lung or prostate,” Dr. Botros said. “It shortens treatment times dramatically, improving patient comfort while maintaining accuracy.” Treatments that used to take up to 35 minutes now can be completed in just five minutes.
IMRT and VMAT often are used for cancers in areas where protecting nearby organs is essential. This includes tumors in the brain, spine and abdomen. Prostate cancer patients especially benefit from this treatment since it allows doctors to send strong doses of radiation to the tumor while protecting the bladder and other organs. The same approach is used for lung and stomach cancers, helping to reduce damage to healthy tissues.
Before starting radiation therapy, doctors carefully plan how to target the tumor. Using detailed scans such as computed tomography (CT) or magnetic resonance imaging (MRI), they create a 3D map of the tumor. This helps guide the radiation to be as precise as possible. “We use CT (sometimes in conjunction with MRI) scans to create a model of the tumor, which guides our treatment planning,” Dr. Botros said. “Radiation oncologists, dosimetrists and medical physicists work together to develop a customized plan that maximizes effectiveness while protecting healthy tissues.”
At the Blount Memorial Cancer Center, staff members are committed to providing excellent care using the latest technology. Dr. Botros emphasized how a dedicated, experienced team makes a big difference. “Our team at Blount Memorial Cancer Center is highly skilled, and we have the latest equipment to deliver precise treatments,” he said. “Having a stable, experienced staff means our patients receive high-quality care without having to travel far from home.” The team works hard to ensure patients feel comfortable and supported throughout their treatment.
“Advancements like IMRT and VMAT are giving patients better outcomes, reducing side effects and offering faster, more effective treatment. These technologies are helping people fight cancer with confidence and hope,” Dr. Botros added.
For more information about the Blount Memorial Cancer Center, call 865-977-5534.
