Final answer:
HDR stands for High Dynamic Range and relates to a technique used in photography to capture a wider range of light and color. RAU refers to the Radio Astronomy Observatory mentioned earlier, which conducts high-resolution observations of stars and planetary disks.
Step-by-step explanation:
HDR stands for High Dynamic Range, which relates to a technique used to capture a wider range of light and color in photography. In terms of survey reading near RAU, I couldn't find any specific information related to HDR surveys in that context. However, RAU could refer to the Radio Astronomy Observatory mentioned earlier, which conducts high-resolution observations of stars and planetary disks.
The essential components of an HDR brachytherapy system are (a) the operating console of the remote after-loader unit, (b) the remote afterloading unit, (c) the radioactive source, (d) transfer tubes, (e) after-loading catheters and applicators, and (f) treatment planning system.
During HDR brachytherapy, a single radioactive source is temporarily placed inside the tumor for a few minutes and then removed. The source travels inside small catheters controlled by a device called a remote after loader.