What are the units for absorbed dose mentioned in the text?

The correct answer is based on the units commonly used to measure absorbed dose in the field of radiation protection and radiography. The unit "RAD," which stands for Radiation Absorbed Dose, was historically used to quantify absorbed doses of radiation in any material, including biological tissue. One RAD is defined as an absorbed dose of radiation that deposits 0.01 joules of energy per kilogram of matter.

"GRAY" (Gy) is the SI (International System of Units) unit for absorbed dose, established to provide a standardized measurement. One GRAY is equivalent to an absorbed dose of one joule per kilogram, making it a more modern and widely accepted unit compared to RAD. The transition from the use of RAD to GRAY reflects a movement towards using SI units in scientific community for consistency and clarity.

In summary, GRAY and RAD are both fundamental units for measuring absorbed dose, with GRAY now favored in scientific literature and regulatory contexts. This context solidifies the understanding that GRAY and RAD are the appropriate units for absorbed doses in radiation-related applications.