It is a method named external beam radiation therapy, which is used in the medical field for diagnosing the disease like brain tumor, detecting cancer cells. It is abbreviated as EBT in which a beam containing x-rays of high-energy level is delivered to the located area of the patient’s tumor. This beam of x-rays is generated by taking use of linear accelerator. The main target off this accelerator is the tumor site. The x-rays in this external beam radiation therapy play a vital role in demolishing the cancer cells. This beam therapy is the careful treatment that leaves all the normal tissues to be out of danger. In this external beam radiation therapy, there is no permanent placement of radioactive sources within the patient’s body.
This external beam radiation therapy plays a significant role in diagnosing various kinds of diseases. These diseases are cancer of breast, Colorectal Cancer, which is also called as Bowel Cancer, cancer of head and neck, cancer of lungs and prostate cancer.
As far as the specialist team of physicians is concerned, radiation oncologist, radiation physicist, dosimetrist and radiation therapist conduct this external beam radiation therapy. In this therapy, the radiation oncologist examines the patient firstly and decides the suitable therapy. He takes decisions which area to be diagnosed and what is the strength of the radiations to deliver.
By discussing with his team mates like radiation physicist and the dosimetrist, the radiation oncologist considers which techniques should be used to deliver the approved dose.
In external beam radiation therapy, all the equipments are handled by the radiation therapist. The whole treatment in this therapy is handled by the radiation oncologists who are considered as the specialized physician for diagnosing cancer radiotherapy.
This external beam radiation therapy is divided into three parts like Simulation, Treatment Planning and Treatment Delivery. In the first stage of Simulation, the patient is positioned on a unique x-ray machine or CT scanner and receive simulation x-rays. Various protection devices like masks, pads, etc are being utilized to assist the patient to grip still throughout the simulation and treatment processes.
In Simulation of external beam radiation therapy, the tumor volume and regions that are going to be diagnosed are located on these images. The best arrangements of radiation beams that are essential for treatment are carried out by dosimetrist and the radiation oncologist and the small marks are placed on the patients by the radiation therapist.