Current through Register Vol. 49, No. 13, September 23, 2024
A. This part applies to remote afterloader
units, teletherapy units, and gamma stereotactic radiosurgery units.
B. A licensee must control access to the
treatment room by a door at each entrance.
C. A licensee must equip each entrance to the
treatment room with an electrical interlock system that:
(1) prevents the operator from initiating the
treatment cycle unless each treatment room entrance door is closed;
(2) causes the source to be shielded when an
entrance door is opened; and
(3)
prevents the source from being exposed following an interlock interruption
until all treatment room entrance doors are closed and the source on-off
control is reset at the console.
D. A licensee must require any individual
entering the treatment room to ensure, through the use of appropriate radiation
monitors, that radiation levels have returned to ambient levels.
E. Except for low-dose remote afterloader
units, a licensee must construct or equip each treatment room with viewing and
intercom systems to permit continuous observation of the patient or human
research subject from the treatment console during irradiation.
F. For licensed activities where sources are
placed within the patient's or human research subject's body, a licensee must
only conduct treatments that allow for expeditious removal of a decoupled or
jammed source.
G. A licensee must:
(1) for medium dose-rate and pulsed dose-rate
remote afterloader units, require:
(a) an
authorized medical physicist and either an authorized user or a physician,
under the supervision of an authorized user, who has been trained in the
operation and emergency response for the unit, to be physically present during
the initiation of all patient treatments involving the unit; and
(b) an authorized medical physicist and
either an authorized user or an individual, under the supervision of an
authorized user, who has been trained to remove the source applicator in the
event of an emergency involving the unit, to be immediately available during
continuation of all patient treatments involving the unit;
(2) for high dose-rate remote afterloader
units, require:
(a) an authorized user and an
authorized medical physicist to be physically present during the initiation of
all patient treatments involving the unit; and
(b) an authorized medical physicist and
either an authorized user or a physician, under the supervision of an
authorized user, who has been trained in the operation and emergency response
for the unit, to be physically present during continuation of all patient
treatments involving the unit;
(3) for gamma stereotactic radiosurgery
units, require an authorized user and an authorized medical physicist to be
physically present throughout all patient treatments involving the unit;
and
(4) notify the radiation safety
officer or the officer's designee and an authorized user as soon as possible if
the patient or human research subject has a medical emergency or
dies.
H. A licensee must
have applicable emergency response equipment available near each treatment room
to respond to a source:
(1) remaining in the
unshielded position; or
(2) lodged
within the patient following completion of the treatment.
Statutory Authority: MS s
144.1202;
144.1203
