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For x-ray and gamma ray photons with energies up to 3 million electron volts (MeV), which of the following radiation quantities may be defined as the measure of the total electric charge of one sign, either all pluses or all minuses, per unit mass that these two types of radiation generate in dry air at standard temperature and pressure (760 mm Hg or 1 atmosphere at sea level and 22 C)?

What is used to account for differences in tissue characteristics when determining effective dose to biologic material? 1. Tissue weighting factor 2. Radiation weighting factor 3. Absorbed dose

How is dose area product usually specified?

Sources of medical radiation exposure include  1. computed tomography 2. sonography 3. magnetic resonance imaging

The person responsible for ascertaining that all radiation guidelines are adhered to and that personnel understand and use radiation safety measures is the 

In a hospital setting, which of the following professionals is expressly charged by the hospital administration with being directly responsible for the execution, enforcement, and maintenance of the ALARA program?

The single  most important source of scatter radiation in both radiography and fluoroscopy is the

Which of the following contributes most to  occupational exposure?

Of the following, which are disadvantages of using pocket ionization chambers as personnel dosimeters?1. They can discharge if they are subjected to mechanical shock.2. Because these devices provide no permanent legal record of exposure, health care facilities that use this method to record personnel exposure must delegate someone to keep such a record.3. If not read each day, the dosimeter may give an inaccurate reading because the electric charge tends to escape.

Sources of natural background radiation contributing to whole-body radiation dose include 1. dental x-rays 2. terrestrial radionuclides 3. internal radionuclides