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(90) “technique chart” means a paper or electronic based graph, such as a device-operational software, generated for the particular machine that establishes the optimal exposure by considering the essential variables of a radiographic examination, enabling an operator to select an exposure appropriate for each patient and procedure combination;

(91) “total effective dose equivalent” means the sum of the

(A) deep-dose equivalent for external exposures; and

(B) committed effective dose equivalent for internal exposures;

(92) “total organ dose equivalent” means the shallow-dose equivalent whole body dose plus the maximum organ dose for any internally deposited radionuclide, if applicable;

(93) “uncontrolled area” means an area to which access is not controlled by the registrant for purposes of protection of individuals from exposure to radiation and radioactive materials, and any area used for residential quarters;

(94) “useful beam” means that part of an ionizing radiation that passes through a window, aperture, cone, or other collimating device of a tube housing;

(95) “very high radiation area” means an area that is accessible to an individual in which radiation levels from radiation sources external to the body may result in an individual receiving an absorbed dose in excess of 500 rads (5 grays) in one hour at one meter from a radiation source or one meter from any surface that the radiation penetrates;

(96) “weighting factor” means the proportion of the risk of stochastic effects resulting from irradiation of that organ or tissue to the total risk of stochastic effects when the whole body is irradiated uniformly;

(97) “whole body” means, for purposes of external exposure, the

(A) head;

(B) trunk, including male gonads;

(D) legs above the knee;

(98) “x-ray” means ionizing electromagnetic radiation emitted by an electrical device in the range of 0.01 nanometers to 20 nanometers. (Eff. 4/9/2009, Register 190; am 7/1/2015, Register 214) Statutory Authority: Authority: AS 18.60.475 AS 18.60.485

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Official source

(91) “total effective dose equivalent” means the sum of the

(A) deep-dose equivalent for external exposures; and

(B) committed effective dose equivalent for internal exposures;

(92) “total organ dose equivalent” means the shallow-dose equivalent whole body dose plus the maximum organ dose for any internally deposited radionuclide, if applicable;

(94) “useful beam” means that part of an ionizing radiation that passes through a window, aperture, cone, or other collimating device of a tube housing;

(97) “whole body” means, for purposes of external exposure, the

(A) head;

(B) trunk, including male gonads;

(D) legs above the knee;