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Unit Four

Safety

Question
Gradual decrease in exposure rate as ionizing radiation passes through tissues is? Attenuation Lange Q&A; pg. 227
How many times should the xray beam scatter before reaching the operator? twice Lange Q&A; pg. 163
When does scattering occur? When there is aprtial transfer of the proton's energy to matter Lange Q&A; pg. 165
When does absorption occur? When an xray photon interacts with matter and disappears Lange Q&A; pg. 165
What is attenuation? When the reduction in the intensity (quantity) of an xray beam as it passes through matter Lange Q&A; pg. 165
When is tissue sensitive to radiation? tissue is most sensitive when it is oxygenated and least sensitive when it is devoid of oxygen Lange Q&A; pg. 167
What is determined by the number of xray exposures made per week? workload Lange Q&A; pg. 171
How many phalanges are there on one hand? 14 Lange Q&A; pg. 95
C1 is considered the Atlas Lange Q&A; pg. 135
C2 is considered the: Axis Lange Q&A; pg. 135
How many cranial bones are there? 8 Lange Q&A; pg. 150
The whole body dose for a CT exam is? 10.0 mSv (1000 mrem) Lange Q&A; pg. 230
What tissue cells are very radiosensitive? Stem cells, young, immature cells, and highly mitotic cells Lange Q&A; pg. 233
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What is a deterministic risk? Nonlinear dose responses and associated with a threshold dose below which no effect is observed. Lange Q&A; pg. 232
Deterministic risk includes? Threshold, nonlinear, all early effects and some late effects. Lange Q&A; pg. 232
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The annual background dose is? 3 mSv (300 mrem) Lange Q&A; pg. 230
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What does beam restriction do? Reduces patient dose, reduces production of scattered radiation, improves image quality Lange Q&A; pg. 250
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he SSD for stationary fluoroscopic should be at least? 15 inches Lange Q&A; pg.263
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The average chest x-ray produces what dose? 0.10 mSv (10 mrem) Lange Q&A; pg. 230
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Primary barriers protect from? The useful beam Lange Q&A; pg. 272
Secondary barriers protect from? Scattered and leakage radiation Lange Q&A; pg. 272
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The monthly fetal dose should not exceed? 0.05 mrem (.5 mSv) Lange Q&A; pg. 289
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Protective apparel includes? Lead aprons, thyroid shields, lead gloves, lead eyewear Lange Q&A; pg. 273
What does ALARA stand for As Low As Reasonably Achievable Lange Q&A; pg. 236
What type of radiation is created by slowing down of electrons? Bremsstrahlung Lange Q&A; pg. 227
What type of radiation is created by the loss of electrons? Characteristic Lange Q&A; pg. 227
What is the relationship between wavelength and frequency? Inverse Lange Q&A; pg. 229
What is the dose response term for no safe dose? Non-threshold Lange Q&A; pg. 231
True or False: We are more concerned with early affects of ionizing radiation. False Lange Q&A; pg. 233
What is the most sensitive cell in the body? Lymphocyte Lange Q&A; pg. 237
The most common type of arthritis is? Osteoarthritis Lange Q&A; pg. 93
Inflammation of a joint. Arthritis Lange Q&A; pg.93
What type of joints are synovial and freely moveable? Diarthrotic Lange Q&A; pg. 91
What type of joints are cartilaginous and partially movable? Amphiarthrotic Lange Q&A; pg. 91
What type of joints are immovable and fibrous? Synarthrotic Lange Q&A; pg. 91
Body is slight and less robust, stomach, intestines, and gallbladder are situated higher in the abdomen, delicate framework, thorax is long. What type of body habitus is this? Hyposthenic Lange Q&A; pg. 78
Body build is average and athletic with elongated abdomen and thorax, with high lungs and heart, transverse stomach, gallbladder is high and lateral, colon is peripheral. What type of body habitus is this? Sthenic Lange Q&A; pg. 78
Body is slender and light with bony framework that is delicate, thorax is long and narrow, stomach is low and long, gallbladder is low and medial, colon is low, medial, and redundant. What type of body habitus is this? Asthenic Lange Q&A; pg. 78
A large and heavy body, bony framework, thick, short, wide, lungs and heart are high, stomach is transverse, gallbladder is high and lateral and colon is peripheral. What type of body habitus is this? Hypersthenic Lange Q&A; pg. 78
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Is compton scatter high or low energy interaction? High energy Lange Q&A; pg.234
Created by: blbrown1