BR: rad bio& physics
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| show | electromagnetic radiation
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| show | wavelenght
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| refers to the number of cycles per second | show 🗑
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| show | hertz (Hz)
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| show | 3 x 10^8 m/s
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| show | ionizing radiation
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| show | break apart electrically neutral atoms
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| ___ photons are man-made infinitesimal bundles of energy that deposit some of their energy into matter as they travel through it. | show 🗑
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| what are the 2 PRODUCTION xrays | show 🗑
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| High speed electron is deflected from it path and the loss of kinetic energy is emitted in the form of an xray photon | show 🗑
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| Bremsstrahlung comprises what percentage of the primary xray beam | show 🗑
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| show | characteristic
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| When is the xray created in the bremsstrahlung | show 🗑
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| K-characteristic xrays from a tungsten target xray tube have ____keV evergy | show 🗑
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| show | Compton, photoelectric, coherent
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| The incoming (low-energy) photon releases all of its energy as it ejects an inner shell electron form the orbit | show 🗑
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| show | high atomic number
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| what interaction significantly effects patient dose | show 🗑
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| show | compton
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| show | compton
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| an incident photon that does not have enough energy to remove an inner shell electron, due to low binding energy, it is deflected and turned into scatter radiation | show 🗑
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| show | linear/straight line
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| show | nonlinear
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| a dose must be received before a response can occur | show 🗑
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| show | linear, threshold
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| show | stochastic or probabilistic
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| no safe dose- even one photon can cause a response | show 🗑
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| is the SI unit of ionizing radiation absorbed in matter (absorbed dose) | show 🗑
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| show | effective dose (EfD)
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| the SI unit of effective dose to biologic tissue | show 🗑
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| show | The Becquerel
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| show | LET
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| show | HVL
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| show | Kv & HVL
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| show | they do not divide; remember, the most sensitive tissues to radiation are tissues that are constantly dividing (mitosis) Epithelial cells
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| show | The image would be underexposed.
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| when you want to make an exposure longer, you would decrease... | show 🗑
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| A decrease in kilovoltage will result in | show 🗑
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| risks have a threshold, are nonlinear, includes all early effects, and includes some late effects | show 🗑
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| risks have no threshold, are linear, have genetic effets, cause cancer, and includes most late effects | show 🗑
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| show | direct effect
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| show | radiolysis
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| show | indirect effect
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| show | indirect effect
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| small doses delivered over a long period of time produce a lesser effect (the greatest effect of irradiation will be observed if a large quantity of radiation is delivered in a short time to the whole body | show 🗑
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| the greater amount of what makes tissues greater in their radiosensitivity | show 🗑
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| show | skeletal and/or organ anomalies
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| fetal irradiation during the first 2 weeks of gestation can result in | show 🗑
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| what are 3 ways to reduce risk to recently fertilized ovum | show 🗑
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| the average annual gonadal dose to the population of childbearing age is estimated to be | show 🗑
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| ____ effects are described as being early or late | show 🗑
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| are manifested within minutes, hours, days, or weeks of irradiation | show 🗑
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| show | late somatic effects
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| show | hematopietic, gastrointestinal, central nervous system
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| show | hematopoietic
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| show | GI syndrome
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| show | CNS
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| what are the 4 stages of acute radiation syndorme | show 🗑
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| occupational: annual dose | show 🗑
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| show | 150 mSI (15rem)
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| show | 500 mSI (50 rem)
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| show | 10x age for mSI or 1 x age for rem
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| Public: anual dose | show 🗑
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| Public: lens of the eyes, skin, hands and feet | show 🗑
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| show | 0.5 mm
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| show | 0.25 mm
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| minimum lead equivalent: thyroid shield | show 🗑
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| minimum lead equivalent: glasses | show 🗑
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| minimum lead equivalent: bucky slot covers | show 🗑
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| minimum lead equivalent: fluoroscopy drapes | show 🗑
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| minimum lead equivalent: clear lead plastic overhead protective barrier | show 🗑
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| minimum thickness of filtration requirement for operating kv: below 50 | show 🗑
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| show | 1.5 mm
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| show | 2.5 mm
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| show | 0.5 mSV (0.05 rem)
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| Embryo: entire gestation | show 🗑
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| show | 15 in
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| show | 12 in
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| cumulative fluoro time | show 🗑
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| primary barrier | show 🗑
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| show | 1/32 in
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