Dosimetry, Brachytherapy, International Code of Practice, Secondary Standards Dosimetry Laboratories, Hospitals, Radiation Dosimetry, Radioisotope Brachytherapy, Measurement, Radiotherapy, Reference Dosimetry, Metrological Primary Standards, Common Procedures, Dosimetry Formalism, Dissemination of Calibration Quantities, Reference-Class Instrument Assessment, Commissioning, Well-Type Ionisation Chamber System, Brachytherapy Radioactive Sources, Photon-Emitting Radioactive Sources, Quantities and Units, High Dose Rate, HDR, Low Dose Rate, LDR, Reference Air Kerma Rate, Instrumentation, Dosimetry Framework, Classification of Instruments and Standards, Estimated Uncertainties, Reference Conditions, Beta-Emitting Radioactive Sources, Clinical Practice, Treatment Delivery Methods, Antiquated Quantities, Detector Systems, American Association of Physicists in Medicine, AAPM, Task Group, Review