One of the key benefits of IGRT is its ability to account for anatomical changes that may occur during the course of treatment. Tumors and surrounding tissues can shift or change shape due to factors such as organ motion, patient positioning, or changes in the tumor itself. IGRT allows clinicians to adapt treatment plans in real-time based on these changes, ensuring that the radiation is consistently delivered to the intended target with high precision.
The integration of imaging technology into the radiation therapy process also enables clinicians to verify the position of the patient and the tumor immediately before each treatment session. This verification step, known as image guidance, ensures that the patient is in the correct position and that the radiation beams are accurately aligned with the tumor. Any necessary adjustments can be made on-the-spot, further enhancing the accuracy of treatment delivery.
IGRT is particularly beneficial for tumors located in areas of the body that are prone to movement or are surrounded by critical structures, such as the lungs, liver, prostate, and head and neck region. By precisely tracking the tumor’s position and adjusting for movement, IGRT allows for higher radiation doses to be delivered to the tumor while minimizing the risk of damaging nearby healthy tissues. This can result in better tumor control and improved patient outcomes.
In addition to its precision and accuracy, IGRT offers the potential for shorter treatment times and reduced toxicity compared to conventional radiation therapy techniques. By delivering higher doses of radiation more precisely, IGRT may also improve overall treatment efficacy and increase the likelihood of tumor eradication.