105 CMR 120.564A
Strontium-90 Sources for Ophthalmic Treatments
(A) Licensees who use strontium-90 for ophthalmic treatments must ensure that certain
activities as specified in 105 CMR 120.564A(B) are performed by either:
(1) An authorized medical physicist; or
(2) An individual who:
(a) is identified as an ophthalmic physicist on a specific medical use license issued by
the Agency, Nuclear Regulatory Commission or an Agreement State; permit issued by
the Agency, Nuclear Regulatory Commission or Agreement State broad scope medical
use licensee; medical use permit issued by a Nuclear Regulatory Commission master
material licensee; or permit issued by a Nuclear Regulatory Commission master material
licensee broad scope medical use permittee; and
(b) holds a master's or doctor's degree in physics, medical physics, other physical
sciences, engineering, or applied mathematics from an accredited college or university;
and
(c) has successfully completed one year of full-time training in medical physics and an
additional year of full-time work experience under the supervision of a medical physicist;
and
(d) Has documented training in:
1. The creation, modification, and completion of written directives;
2. Procedures for administrations requiring a written directive; and
120.564A: continued
3. Performing the calibration measurements of brachytherapy sources as detailed in
105 CMR 120.564.
(B) The individuals who are identified in 105 CMR 120.564A(A) must:
(1) Calculate the activity of each strontium-90 source that is used to determine the treatment
times for ophthalmic treatments. The decay must be based on the activity determined under
105 CMR 120.564; and
(2) Assist the licensee in developing, implementing, and maintaining written procedures
to provide high confidence that the administration is in accordance with the written directive.
These procedures must include the frequencies that the individual meeting the requirements
in 105 CMR 120.564A(A) will observe treatments, review the treatment methodology,
calculate treatment time for the prescribed dose, and review records to verify that the
administrations were in accordance with the written directives.
(C) Licensees must retain a record of the activity of each strontium-90 source in accordance
with 105 CMR 592(C).