Quality Management Created by Krystal
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| show | density - decreases density because it eliminates quantity(mA) of beam used contrast - lower contrast as leaves with higher kVp
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| An increase in SID(from 40" -> 72") will have what affecton Density and Contrast? | show 🗑
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| What affect does increasing the grid ratio have on Contrast and density? | show 🗑
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| What affect does increasing the OID have on Density and Contrast? | show 🗑
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| If you Increase kVp what will happen to Contrast?...Density? | show 🗑
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| show | increase contrast and decrease density
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| mAs controls what? | show 🗑
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| If you increase mAs what happens to Contrast?...Density? | show 🗑
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| A 15% increase in kVp does what to density? | show 🗑
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| show | increase the detail which in turn will decrease distortion
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| show | decrease the detail and has no affect on distortion.
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| show | decrease the detail cause it'll look blurry and increase the distortion
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| show | decrease detail and increase distortion ( the closer you have the object to the IR the better detail)
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| Define Radiographic Quality | show 🗑
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| Define Spatial Resolution | show 🗑
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| Define Contrast resolution | show 🗑
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| show | Radiographic noise is the random fluctuation in the optical density of the image
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| Define Quantum Mottle | show 🗑
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| Define the Characteristic Curve | show 🗑
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| show | when an image on the radiograph is larger then the object they represent.
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| show | Use the largest SID and the smallest OID
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| show | unequal magnification of different portions of the same object.
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| Distortion depend on......? | show 🗑
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| Define Focal spot blur | show 🗑
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| show | Greater on the cathode side
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| How can you minimize focal spot blur? | show 🗑
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| Define Heel effect | show 🗑
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| Factors effecting subject contrast | show 🗑
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| show | movement of the patient or the x ray tube during exposure results in blurring of the image
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| show | the study of the relationship between the intensity of exposure of the film and the blackness after processing is called this
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| Sharpness of image detail is best measured by.....? | show 🗑
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| The visibility of image detail is best demonstrated by.....? | show 🗑
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| Define foreshortening | show 🗑
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| Define elongation | show 🗑
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| show | describes the ability to see the detail on the radiograph and is best measured by contrast resolution
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| How does Latitude affect the Characteristic Curve? | show 🗑
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| Procedures for reducing motion blur? | show 🗑
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| show | Its a device that allows AEC. It senses the amount of radiation incident on the IR, through electric feedback circuit, radiation exposure is terminated when sufficient # of x-rays has reached IR to produce an acceptable optical density
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| show | 0.1 to 0.03
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| show | the region in which a properly exposed radiograph appears. Its the diagnostic range.
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| show | use high mAs and low kVp setting, slower IR
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| show | kVp, ma x s or mAs, and SID
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| show | the cells cannot tell the difference between the primary beam and the scattered radiation, so if a high proportion of scatter radiation reachs cells, exposure is terminated prematurly
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| How can you reduce magnification? | show 🗑
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| The useful reange of OD is approx? | show 🗑
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| Fast IR's have_____ noise and what does it do to spatial resolution and contrast resolution? | show 🗑
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| High spatial resolution and contrast resolution require____noise and __________ IR's | show 🗑
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| show | Focal spot does NOT affect contrast or density, it affect recorded detail and focal spot blur.
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| show | positioning the anatomiacal part of interest in a plane parallel to that of the IR
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| Increased Pt thickness does what to contrast and density? | show 🗑
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| Increase grid ratio...what happens to contrast and density? | show 🗑
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| Increased compression has what affect on contrast, density, detail and distortion? | show 🗑
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mcc radiology
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