{"data":{"id":"us/10-cfr-35.432","jurisdiction":"us","citation":"10 CFR 35.432","heading":"Calibration measurements of brachytherapy sources.","body":"(a) Before the first medical use of a brachytherapy source on or after October 24, 2002, a licensee shall have—\n(1) Determined the source output or activity using a dosimetry system that meets the requirements of § 35.630(a);\n(2) Determined source positioning accuracy within applicators; and\n(3) Used published protocols currently accepted by nationally recognized bodies to meet the requirements of paragraphs (a)(1) and (a)(2) of this section.\n(b) Instead of a licensee making its own measurements as required in paragraph (a) of this section, the licensee may use 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 paragraph (a) of this section.\n(c) A licensee shall mathematically correct the outputs or activities determined in paragraph (a) of this section for physical decay at intervals consistent with 1 percent physical decay.\n(d) A licensee shall retain a record of each calibration in accordance with § 35.2432.","path":["Title 10—Energy","CHAPTER I—NUCLEAR REGULATORY COMMISSION","PART 35—MEDICAL USE OF BYPRODUCT MATERIAL","Subpart F—Manual Brachytherapy"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-10.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:09Z","sha256":"03de4c1a15a3637351b99c8102c10db0de466040bf34e34cdd1cf362f3254b85","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-35.415","next":"us/10-cfr-35.433"},"notice":"GroundRules: Original legal text. Not legal advice."}