DHS 157.67(8)(c)(c) In addition to the requirement for full calibration for low dose-rate remote afterloader units in par. (b), a licensee shall perform an autoradiograph of the source to verify inventory and source arrangement at intervals not exceeding one calendar quarter. DHS 157.67(8)(e)(e) A licensee shall make a full calibration measurement required by par. (a) under published protocols accepted by nationally recognized bodies. DHS 157.67(8)(f)(f) For low dose-rate remote afterloader units, a licensee may use measurements provided by the source manufacturer that are made under pars. (a) to (e). DHS 157.67(8)(g)(g) A licensee shall mathematically correct the outputs determined in par. (b) 1. for physical decay at intervals consistent with one percent physical decay. DHS 157.67(8)(h)(h) A full calibration measurement required by par. (a) and physical decay correction required by par. (g) shall be performed by the authorized medical physicist. DHS 157.67(8)(j)(j) In addition to the requirements for full calibration for low dose rate remote afterloaders, as specified in par. (b), a licensee shall perform an autoradiograph of the source or sources to verify inventory and source arrangement at intervals not to exceed 3 months. DHS 157.67(9)(9) Full calibration measurements on gamma stereotactic radiosurgery units. DHS 157.67(9)(a)(a) A licensee authorized to use a gamma stereotactic radiosurgery unit for medical use shall perform full calibration measurements on each unit under any of the following circumstances: DHS 157.67(9)(a)2.a.a. Whenever spot-check measurements indicate that the output differs by more than 5% from the output obtained at the last full calibration corrected mathematically for radioactive decay. DHS 157.67(9)(a)2.b.b. Following replacement of the sources or following reinstallation of the gamma stereotactic radiosurgery unit in a new location. DHS 157.67(9)(a)2.c.c. Following any repair of the gamma stereotactic radiosurgery unit that includes removal of the sources or major repair of the components associated with the source assembly. DHS 157.67(9)(a)3.3. At intervals not exceeding one year, with the exception that relative helmet factors need only be determined before the first medical use of a helmet and following any damage to the helmet. DHS 157.67(9)(b)(b) To satisfy the requirement of par. (a), a full calibration measurement shall include determination of all the following: DHS 157.67(9)(b)2.2. Relative helmet factors to verify that the helmet material provides the required shielding to the patient. DHS 157.67(9)(b)3.3. Isocenter coincidence to confirm the centering accuracy of the radiation beam relative to the helmet openings. DHS 157.67(9)(b)6.6. Trunnion centricity to determine the rotational center of the source relative to the helmet openings. DHS 157.67(9)(b)7.7. Treatment table retraction mechanism, using backup battery power or hydraulic backups with the main power to the unit off. DHS 157.67(9)(b)8.8. Helmet microswitches to determine if the switches terminate the radiation beam when tripped by unintended movement of the helmet. DHS 157.67(9)(c)(c) A licensee shall use the dosimetry system described in sub. (6) (a) to measure the output for one set of exposure conditions. The remaining radiation measurements required in par. (b) 1. may be made using a dosimetry system that indicates relative dose rates. DHS 157.67(9)(d)(d) A licensee shall make a full calibration measurement required by par. (a) under published protocols accepted by nationally recognized bodies.