1. (a) Before the first medical use of a brachytherapy source, a licensee shall have:

   1. (1) Determined the source output or activity using a dosimetry system that meets the requirements of He-P 4035.53(a) and (b);
   2. (2) Determined source positioning accuracy within applicators; and
   3. (3) Used published protocols currently accepted by nationally recognized bodies to meet the requirements of He-P 4035.46(a)(1) and (a)(2); or
   4. (4) Used measurements provided by the source manufacturer or by a calibration laboratory accredited by the American Association of Physicists in Medicine that are made in accordance with He-P 4035.46(a).
2. (b) A licensee shall mathematically correct the outputs or activities determined by He-P 4035.46(a) for physical decay at intervals consistent with 1 percent physical decay.

3. (c) A licensee shall retain a record of each calibration of brachytherapy source for 3 years after the last use of the source. The record shall include:

   1. (1) The date of the calibration;
   2. (2) The manufacturer’s name, model number, and serial number for the source and the instruments used to calibrate the source;
   3. (3) The source output or activity;
   4. (4) The source positioning accuracy within the applicators; and
   5. (5) The name of the individual, the source manufacturer, or the calibration laboratory that performed the calibration.

Source. (See Revision Note at part heading for He-P 4035) #6942, eff 2-1-99; ss by #8800, INTERIM, eff 2-1-07, EXPIRED: 7-31-07 New. #8959, eff 8-7-0707; ss by #10897, INTERIM, eff 7-22-15, EXPIRES: 1-18-16; ss by #11011, eff 1-15-16; ss by #13048, eff 6-2-20; ss by #13473, eff 10-25-22