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RADT 465 Rad. Prot.

RADT 465 Radiation Protection

QuestionAnswer
Bremsstrahlung radiation comprises ___%-___% of the x-ray beam. 70, 90 (Lange PREP pg. 227)
What type of radiation is formed by the slowing down or redirection of an electron? Bremsstrahlung (Lange PREP pg. 227)
What type of radiation is formed due to the loss of an electron? Characteristic (Lange PREP pg. 227)
What is the relationship between wavelength and frequency? inverse (Lange PREP pg. 229)
What is the dose response term for no safe dose, even one photon can cause a response? nonthreshold (Lange PREP pg. 231)
Carcinogenesis, Cataractogenesis, Embryologic effect and lifespan are all ____ effects of radiation exposure. (Lange PREP pg. 231)
Occupationally exposed workers are morse concerned with (late/early) effects of ionizing radiation. late (Lange PREP pg. 233)
What is the most sensitive cell in the body? lymphocyte (Lange PREP pg. 237)
What does ALARA stand for? As Low As Reasonably Achievable (Lange PREP pg. 236)
What are the four stages of Acute Radiation Syndrome? Prodromal, Latent, Manifest and Recovery or Death (Lange PREP pg. 241)
When is the delivery of ionizing radiation to a fetus the most dangerous? early on (Lange PREP pg. 242)
When should children be shielded? whenever possible (Lange PREP pg. 242)
Is it easier on a male or female patient to practice gonadal shielding based off of the anatomic make up of reproductive organs? males (Lange PREP pg. 242)
What are three types of beam restrictors? aperture diaphragm, cone/cylinder and collimator (Lange PREP pg. 251)
The most important way to reduce patient dose is through ____ _______. beam restriction (Lange PREP pg. 252)
Beam restriction improves image detail by reducing _____. scatter (Lange PREP pg. 252)
Low mAs and high kV factors will increase or decrease patient dose? decrease (Lange PREP pg. 254)
_______ shielding should be used when the gonads lie in or within 5 cm of the collimated beam, the patient has reproductive potential and it doesn't interfere with diagnostic objectives. gonadal (Lange PREP pg. 258)
What are the three types of gonadal shields? flat contact, shadow and contour contact (Lange PREP pg. 258)
What are the two types of AECs? ionization chamber and phototimer (Lange PREP pg. 260)
Fluoroscopy generally delivers a higher patient dose due to the decreased ____. source-to-skin distance (SSD) (Lange PREP pg. 262)
What are the three cardinal principles of radiation protection? time, distance and shielding (Lange PREP pg. 271)
Primary barriers protect from the useful beam and secondary barriers protect form scatter and ______ radiation. leakage (Lange PREP pg. 272)
True/False: If a technologist becomes pregnant she must quit or take a temporary leave of absence. False, a pregnant technologist must inform their employer as soon as possible and wear a secondary radiation badge to monitor fetal exposure (Lange PREP pg. 275)
Where are the two areas a technologist is exposed to the most ionizing radiation? fluoroscopy and mobile radiography (Lange PREP pg. 275)
Created by: sadugan
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