The secondary protective barrier must overlap the primary protective barrier by at least:

Areas for the general public, such as waiting rooms and stairways, are considered:

The cumulative occupational exposure for a 48 year old radiographer is:

The radiation weighting factor for x-rays is:

The radiation weighting factor for x-rays is:

Long – wavelength x-rays are removed from the primay beam by the use of a:

The primary purpose of radiation safety practices is to:

The x-ray control booth is considered a:

Cellular components contained in the cytoplasm are called:

The law of Bergonie adn Tribondeau states: