Ch 8-11
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| Xrays in air are measured in | show 🗑
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| show | quanitity, exposure, intensity
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| Xray quantity increases in direct proportion to increases in | show 🗑
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| If SID is reduced by one half the intensity of the image intensity increases | show 🗑
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| show | reduced
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| If filter thickness is decreased then xray intensity is | show 🗑
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| Which has the greater effect on increasing density, a 10% increase in kVp or a 10% increase in mAs? | show 🗑
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| If xray quantity is doubled, the optical density on the finished radiograph will be increased by a factor of | show 🗑
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| show | double; double
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| An increase of 15% in kVp is equivalent to increasing mAs | show 🗑
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| The penetrability of an xray beam is called xray | show 🗑
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| An xray that could pass through thick tissue would have high | show 🗑
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| Beam quality is affected by | show 🗑
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| Image contrast is affected by beam | show 🗑
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| Xray beam quality is increased by increasing | show 🗑
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| show | uniform optical density
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| show | Compton scattering and photoelectric absorption
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| An xray interacts with an atom without ionization during | show 🗑
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| show | Compton interation
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| Photoelectric absorption involves the ejection of | show 🗑
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| Compton scatter is directed at ___ angle from the incident beam | show 🗑
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| show | photoelectric interaction
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| show | photodisintegration take place
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| K shell binding energy increases with increasing | show 🗑
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| show | fat, soft tissue, or air
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| Because of differential absorption about __% of incident beam contributes to the image | show 🗑
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| Differential absorption depends on the | show 🗑
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| show | absorption and scatter
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| show | high atomic number
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| show | air
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| ____ kVp techniques reduce patient dose | show 🗑
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| If 5% of the incident beam are not attenuated then 95% were | show 🗑
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| A high quality radiograph should always demonstrate | show 🗑
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| show | screen, motion, and geometric blur
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| show | resolution
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| show | increased noise
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| show | contrast
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| show | 1
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| An IR with wide latitude can be used over a great range of | show 🗑
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| show | magnification, distortion, and focal spot blur
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| show | long SID and small OID
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| Focal spot blur can be reduced by using a | show 🗑
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| show | patient thickness, atomic number, density, and kVp selection
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| The chest has high subject contrast because of the wide differences in ____ and ____ tissue mass density between air and bone. | show 🗑
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| show | increased
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| The primary control of radiographic contrast is by varying | show 🗑
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| show | changing mAs
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| show | interaction or absorbed or scattered through compton interaction
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| show | increases
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| Approximately ___ % of incident beam is transmitted through the patient. | show 🗑
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| show | noise
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| Decreasing kVp will _____ patient dose | show 🗑
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| show | decreased
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| show | increase
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| The most common beam restricting device Is the | show 🗑
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| Compression devices will | show 🗑
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| show | improves contrast and reduces patient dose
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| show | fixed distance
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| show | tight collimation
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