high dose radiation): radiation delivered by temporary insertion of radioactive Iridium wire into flexible needles placed in the prostate through the perineum. See our paper Temporary Seed Implant with High Dose Rate Brachytherapy.
HDR stands for high dose rate. It is a form of brachytherapy that involves the rapid (minutes) and accurate delivery of radiation directly into the target tissue. It is distinguished from LDR or low dose rate brachytherapy where the sources are left in place for a longer period (either days or permanently like "seeds") of time.
High Data Rate. High speed CDMA data technology from QUALCOMM for existing cdmaOne voice networks or new data networks. Provides 2.4 Mbps/384 Kbps asymmetric operation.
High-dose radiation. An amount of radiation that is greater than that given in typical radiation therapy. HDR is precisely directed at the tumor to avoid damaging healthy tissue, and may kill more cancer cells in fewer treatments.
Hot Dry Rock. heat energy residing in impermeable crystalline rock. Fracturing creates permeability to allow the circulation of water to remove the heat.