Dental Radiography and Safety Protection Quiz

Who discovered xrays ?

• Roentgen

• Rollins

• Kells

• Coolidge

Radiation waves that lengthen after coming in contact with the patient and lose their energy are considered what type of radiation?

• Primary

• Scatter

• Leakage

• Secondary

What types of cells are most sensitive to radiation?

• Lymphoid, reproductive, bone marrow, skin

• Lymphoid, reproductive, bone marrow, intestinal epithelium

• Muscle, bone, nerve, skin

• Lymphoid, reproductive, bone marrow, thyroid

What device can be worn by the DA to monitor radiation exposure?

• Pedometer

• Thermometer

• Dosimeter

• Barometer

What is the responsibility of the manufacturer in ensuring safety of the dental x-ray unit?

• Hire credentialed and trained personnel

• Machine must have 'deadman' switch

• Prescribe responsibly

• Proper and safe installation

What is the process of electrons being given off when filament is heated to a certain temperature?

• Thermionic emission

• Ionization

• Electromagnetic energy

• Hadrons

What is the purpose of the PID being lead lined?

• To protect the patient from radiation

• To protect the dental assistant from radiation

• To protect the x-ray tube from damage

• To improve the quality of the x-ray image

What is the unit of measurement for radiation absorbed dose?

• R

• mR

• Rad

• Rem

What is the unit of measurement for relative biological effectiveness?

• RBE

• mR

• Rad

• GY

What is the purpose of the filtration built into the x-ray unit?

• To increase radiation exposure to the patient

• To reduce radiation exposure to the patient

• To improve the contrast of the x-ray image

• To protect the x-ray tube from damage