What Is Intensity Modulated Radiation Therapy?

Intensity modulated radiation therapy (IMRT), which is a type of three-dimensional conformal radiation therapy, requires that the dose intensity in the radiation field be adjusted according to certain requirements, referred to as intensity modulated radiation therapy. It adjusts the beam intensity according to the three-dimensional shape of the target area and the specific anatomical relationship between the vital organ and the target area under the condition that the radiation field is consistent with the shape of the target area. The dose distribution in a single radiation field is uneven but the entire target area Intra-volume dose distribution is more uniform than three-dimensional conformal treatment. And in reducing the side effects of IMRT

IMRT

1. intensity modulated radiation therapy

1. Designing IMRT for forward planning

After the anatomical outline is drawn on the CT image,

In IMRT , each radiation field is divided into multiple small fields (also called

1. Physical compensation method ^[1]

(1) Neurological tumors include gliomas, pituitary tumors, meningioma, brain metastases, germ cell tumors, medulloblastomas, ependymal tumors, pineal glands, chordomas, intracranial lymphomas, brain stem Tumors, spinal tumors, etc.

(2) Head and neck tumors include nasopharyngeal cancer, laryngeal cancer, maxillary sinus cancer, oral cancer, and middle ear cancer.

(3) Chest tumors include lung cancer, esophageal cancer, mediastinal tumor, and breast cancer.

(4) Abdominal tumors include pancreatic cancer, liver cancer, bile duct cancer, bowel cancer, etc.

(5) Tumors of the urinary and reproductive system include prostate cancer, kidney cancer and pelvic tumors

(6) Bone tumors include osteosarcoma, chondrosarcoma, fibrosarcoma, etc.

(7) Other hemangiomas, malignant granulomas, etc.