Chapter 1 Introduction to Radiation Protection Flashcards
What is Ionizing Radiation?
radiation that produces positively and negatively charged particles when passing through matter
What is radiation protection?
effective measures used by radiologic technologists to safeguard patients, personnel and general public from unnecessary exposure to ionizing radiation
What are the three radiation quantities?
Exposure, Absorbed Dose, Effective Dose
Exposure
amount of ionization produced in air when ionizing radiation is present (skin dose) SI units C/kg old units mR
Absorbed dose
amount of energy deposited in material per unit mass of material (tissue dose) SI units mGy old units mRad
Effective dose
attempt to provide a quantity that is a measure of general harm in humans, intended for overall measure of biologic effects of ionizing radiation SI units mSv old units mRem
What is Diagnostic Efficacy?
degree to which a diagnostic study reveals presence or absence of disease in patient following radiation protection guidelines
Who determines the need for the diagnostic study
physician, radiographer shares a portion of responsibility by providing quality images avoid repeats and shielding
What is another name for ALARA?
ORP optimization for radiation protection
What is a Radiation Safety Officer?
member of the hospital that implements and maintains a safety program in which ALARA is used, performs audits to ensure employees are protected
What is BERT?
Background Equivalent Radiation Time, method that can be used to improve understanding and reduce fear and anxiety for the patient
Why are pediatric patients more sensitive to radiation?
They are 3 times more sensitive because their cells are dividing more rapidly
