High-Dose Rate Temporary Prostate Brachytherapy

High-dose rate (HDR) temporary prostate brachytherapy is a technique for delivering a high-intensity radiation source directly to the prostate gland to treat cancer. The radiation source is administered through hollow catheters or needles inserted precisely into several areas of the prostate gland using ultrasound guidance and treatment planning computed tomography or ultrasound images. Radiation is applied to target areas until the prescribed dose is reached and is then removed. The goal of treatment is to induce direct tumor necrosis and reduce toxicity and surrounding tissue damage.