There are several techniques used in IGRT, each with its specific applications and benefits:
Cone Beam CT (CBCT): Uses a cone-shaped X-ray beam to create 3D images of the tumor before each treatment session. Electronic Portal Imaging Device (EPID): Provides real-time imaging using the radiation beam itself, often used for positioning verification. MRI-Guided Radiation Therapy: Combines MRI imaging with radiation delivery for soft tissue tumors where high contrast imaging is crucial. Ultrasound-Guided Radiation Therapy: Uses ultrasound to visualize the tumor, particularly useful in abdominal or pelvic cancers.
