Brachytherapy in India
Brachytherapy is a form of radiation therapy in which radiation is delivered locally to a tumor (as opposed to external radiation). Since brachytherapy delivers radiation directly to a tumor, it is less likely than external radiation to damage healthy tissue.Brachytherapy is most often used as a palliative therapy, a therapy done to relieve symptoms such as bleeding or to open airways, but not to cure lung cancer.
Types of BrachytherapyMedium-dose rate (MDR) Brachytherapy is characterized by a medium rate of dose delivery generally used for lungs, breasts
Pulsed-dose rate (PDR) Brachytherapy involves short pulses of radiation, typically once an hour, to simulate the overall rate and effectiveness of LDR treatment. Typical tumour sites treated by PDR brachytherapy are gynaecological
Permanent brachytherapy, also known as seed implantation, involves placing small LDR radioactive seeds or pellets (about the size of a grain of rice) in the tumour or treatment site and leaving them there permanently to gradually decay. Over a period of weeks or months, the level of radiation emitted by the sources will decline to almost zero. The inactive seeds then remain in the treatment site with no lasting effect. Permanent brachytherapy is most commonly used in the treatment of prostate cancer. eye, head and neck region (lip, floor of mouth, tongue, nasopharynx and oropharynx), urinary tract (bladder, urethra, penis), female reproductive tract (uterus, vagina, vulva), and soft tissues.