In LDR brachytherapy, radioactive isotopes are placed inside the body, usually within or near the tumor. The radiation is delivered at a low dose rate over an extended period, typically several days. This method allows for continuous exposure of the tumor to radiation, thereby increasing the effectiveness of the treatment. The radioactive sources are often implanted using a catheter or applicator, which is positioned with the help of imaging techniques such as ultrasound, CT scans, or MRI.
