The coefficient of variation of exposure shall not exceed 0.05 when all technique factors are held constant. This requirement shall be deemed to have been met if, when four exposures are made at identical technique factors, the value of the average exposure (E) is greater than or equal to five times the maximum exposure (Emax) minus the minimum exposure (Emin). E >5 (Emax - Emin).

Statutory/Other Authority

ORS 453.605 - 453.807

Statutes/Other Implemented

ORS 453.605 - 453.807

History

PH 4-2013, f. & cert. ef. 1-29-13
PH 14-2008, f. & cert. ef. 9-15-08
PH 12-2006, f. & cert. ef. 6-16-06
HD 1-1991, f. & cert. ef. 1-8-91
HD 4-1985, f. & ef. 3-20-85