Radiation therapy is one of the most widely used cancer treatment methods in medicine. There are many different types of radiation therapy such as accelerator radiation therapy, dose modulated radiation therapy or brachytherapy...

Dose-modulated radiation therapy helps increase the ability to kill tumors while reducing side effects of radiation therapy, improving the quality of life for patients. However, because there is a very large dose difference between the treatment volume and surrounding healthy tissue, which requires precision in the treatment process, it is necessary to combine with radiotherapy under image guidance.

Radiation therapy is an important method in cancer treatment, requiring it to be conducted sequentially and accurately, in which treatment planning is an important step, determining the patient's radiotherapy outcome.

In the fight against cancer, early diagnosis, accurate assessment of disease stage and monitoring of treatment effectiveness are vital. PET/CT plays a decisive role in the accurate diagnosis of the disease and helps to provide the most effective treatment plan for each patient. Therefore, treatment facilities possessing this state-of-the-art diagnostic tool will be a reliable address for cancer patients to come for examination and treatment.

The dose-modulated radiotherapy technique IMRT allows irradiation of a higher radiation dose to the tumor while reducing the dose below the threshold to healthy organs, thereby providing better treatment results and reducing side effects. compared with conventional techniques.

Intensity-modulated radiation therapy, also known as dose-modulated radiation therapy (IMRT): is a radiotherapy technique in which the radiation beam is modulated so that the intensity at points within the field of view is not uniform. using a compensator or leaf pairs of a multileaf collimator (MLC),...

SBRT is a high-tech radiotherapy technique that uses multiple beams to deliver a very high radiation dose to the target tissue and rapidly reduce the dose to adjacent tissues. This is a very high precision radiotherapy technique from positioning and immobilization of the patient, mechanics to dose delivery. A high dose of radiation (the “surgical” dose is usually ≥ 5Gy/partial dose) will be delivered to the patient externally from the irradiator into the body. The duration of treatment is shortened using less therapeutic doses, usually only 1 to 5 therapeutic doses.

In 2015, an estimated 93,000 Americans were diagnosed with colon cancer. Rectal - anal canal cancer ranks 3rd in both men and women. Of these, 39,610 people will be diagnosed with rectal cancer. Especially if you were diagnosed with colorectal cancer before the age of 50, or if there are several other cancers that run in your family, you and your loved ones are at increased risk of familial colorectal cancer. Your loved one needs to be screened earlier than others.

Dose-modulated radiation therapy (IMRT) is an advanced radiotherapy technique that increases the ability to kill tumors while reducing the side effects of radiation therapy, improving the quality of life for patients.

Nguyen Dinh Long1, Tran Ba Bach1, Doan Trung Hiep2, Nguyen Manh Ha2, Nguyen Van Han3, Nguyen Trung Hieu3, Ha Ngoc Son3, Nguyen Van Nam3, Chu Van Dung3, Pham Tuan Anh3.