Dosimetry is the science or technique of determining a radiation dose.

Biodosimetry refers to the measurement of biological reaction as a surrogate for radiation dose.

The acute dose is the amount of energy accommodated in human tissue or in biological systems.

See also Acute Exposure, Acute Radiation Syndrome, Biodosimetry and Annual Limit On Intake.

Dosimetrists calculate the dose of radiation. To secure sufficient tumor destruction while sparing the normal tissues, a number of (often) complex treatment plans are developed.
The Medical Dosimetrist Certification Board certifies dosimetrists. Dosimetrists work with the physician and the medical physicist to choose the treatment plan that is best for each patient. A dosimetrist may start as a radiation therapist and become with intensive training a dosimetrist. Others are graduates of dosimetry programs.

(MIRD) The medical internal radiation dose committee is the society of nuclear medicine responsible for the internal dosimetry of diagnostic imaging radiopharmaceuticals.