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RADT 465
ARRT Registry Review Covering Equipment Operation and QC
| Question | Answer |
|---|---|
| Defined as the thickness of any absorber that will reduce the x-ray beam intensity to one half its original value? | Half value layer Pg. 506 (Prep) |
| This type of radiation comprises 70-90% of the x-ray beam? | Bremsstrahlung radiation Pg. 286 (Exam) |
| This type of radiation encounters a tungsten atom and ejects a k- shell electron leaving a vacant k-shell? | Characteristic radiation Pg. 286 (Exam) |
| What part of the tube rotates the anode? | Induction motor Pg. 287 (Exam) |
| When heated to incandescence, the filament liberates electrons is known as? | Thermionic emission Pg 287 (Exam) |
| Defines as the potential difference existing between two points? | Voltage Pg. 286 (exam) |
| Property of a circuit that opposes current flow? | Resistance Pg. 286 (Exam) |
| Quantity of stored electricity? | Capacitance Pg. 286 (Exam) |
| More than ___ % of electrons kinetic energy is changed to heat energy? | 99% Pg. 282 (Exam) |
| Functions to maintain brightness and contrast on the output screen image corrects errors in x-ray beam attenuation adjusting kv and mA? | Automatic brightness control Pg. 485 (Prep) |
| Refers to the percentage drop of maximum voltage each pulse of current experiences? | Voltage Ripple Pg. 280 (Exam) |
| Refers to the percentage drop of maximum voltage each pulse of current experiences? | Voltage Ripple Pg. 280 (Exam) |
| Receives remnant radiation emerging from the patient and converts it to a fluorescent light image? | Input phosphor Pg. 280 (Exam) |
| What is the photocathode made of? | Photoemissive alloy Pg. 280 (Exam) |
| Focuses electrons to help maintain image resolution? | Electrostatic focusing cup Pg. 280 (Exam) |
| All components of a circuit device located before the primary cold of a high voltage transformer are considered to be? | Primary of low voltage Pg 289 (Exam) |
| The use of a ____ focal spot is essential to the maintenance of image sharpness in magnification images. | Fractional Pg. 289 (Exam) |
| The ______ the focal spot the more limited the anode is with respect to quantity of heat it can safely accept. | Smaller Pg. 292 (Exam) |
| Caused by high energy, short wave length, electromagnetic radiations that break apart electrically neutral atoms? | Ionization Pg. 442 (prep) |
| A generator converts mechanical energy to _____ energy? | Electrical Pg. 446 (Prep) |
| True or False: X-ray tubes have atleast two filaments, one for each focal spot. | True Pg. 453 (Prep) |
Created by:
bspayne93
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