Equipment Operation and QC
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The distance between two consecutive wave crests. | Wavelength pg. 432
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| Shorter wavelength = _______ frequency | Greater pg. 433
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| What is Tungsten's atomic number? | 74 pg. 446
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| T/F: The effective focal spot is almost always smaller than the actual focal spot. | False. It's ALWAYS smaller. pg. 448
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| A _________ terminates the exposure should the AEC fail. | Backup timer. pg 466
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| What is a pixel? | A two-dimensional picture element. pg 466
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| What is a voxel? | A three-dimensional picture element. pg 466
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| Defined as the ratio of light photons at the output phosphor to the number at the input phosphor. | Flux gain. pg 480
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| What does magnification do to patient dose? | Increases patient dose due to having to increase the mA value. pg. 482
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| Bremsstrahlung radiation comprises _____ of the x-ray beam. | 70-90%. pg 431
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| Characteristic radiation comprises _____ of the x-ray beam. | 10-30%. pg 431
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| Frequency and wavelength are _____ related to each other. | Inversely. pg. 431-432
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| T/F: x-rays travel at the speed of light. | True. pg 434
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| Which photon interaction contributes to the technologist's dose? | Compton Scatter. pg. 434
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| What is the only interaction that doesn't cause ionization? | Coherent Scatter. pg 436
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| Major contributor to patient dose. | Photoelectric effect. pg 436
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| Frequency's unit of measurement. | Hertz. pg.438
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| A ______ converts mechanical energy into electrical energy. | Generator. pg 439
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| Tungsten chosen as target material because of? | Its high atomic number and high melting point. pg 446
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| What causes a cracked anode? | A single, large, excessive exposure to a cold anode. pg 449
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Ammerkel
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