There are two main types of brachytherapy: High-Dose Rate (HDR) and Low-Dose Rate (LDR). HDR brachytherapy delivers a high dose of radiation in a short period, typically over several minutes, and is often done on an outpatient basis. LDR brachytherapy, on the other hand, delivers radiation over a longer period, ranging from hours to days, and usually requires hospitalization.
