Carlton Adler Ch 41
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | the actual image?
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| what is a tomograph? | show 🗑
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| what is tomography? | show 🗑
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| principle of tomography | show 🗑
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| pivot point around the movement occurs, object being examined is placed at this point | show 🗑
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| where is object being imaged placed? | show 🗑
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| method to overcome superimposition | show 🗑
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| show | tube, object, IR
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| show | slice or cuts
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| what is the result of a tomographic image? | show 🗑
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| arc or angle the tube travels. Total distance traveled by the tube | show 🗑
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| arc or angle the tube travels during the exposure | show 🗑
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| what kind of slices do we take in tomography | show 🗑
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| show | motion blur
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| what is properly imaged in tomography | show 🗑
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| show | objects lying outside focal plane demonstrate increasing blur the further away from the object plane
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| show | increased blurring causes decreased density. Objects are more transparent, permits objects with the focal plane to be seen through the blurring
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| how is tomographic amplitude (arc) related to blur | show 🗑
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| show | directly. Increase in distance of an object from fulcrum, increase in blur
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| how is distance from IR related to blur? | show 🗑
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| show | blur increases
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| show | phantoms
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| when are phantoms produced? | show 🗑
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| occurs when tube motion is parallel to long axis of object | show 🗑
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| show | greater than or equal to
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| show | less than or equal to
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| what decreases phantom images | show 🗑
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| pivot point | show 🗑
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| show | move table up or down OR move fulcrum up or down, patient remains stationary.
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| region within the image exhibits satisfactory recorded detail and is controlled by the fulcrum | show 🗑
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| show | width of the focal plane
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| what is the relationship between thickness and exposure angle? | show 🗑
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| what determines section thickness? | show 🗑
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| show | section interval
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| show | section interval
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| most common and most widely used type of motion | show 🗑
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| show | pluridirectional
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| types of pluridirectional movements | show 🗑
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| slice thickness relationship to movements | show 🗑
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| must match length of time required for x-ray tube to complete the tomo amplitude | show 🗑
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| what kind of mA used for tomogram? | show 🗑
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| show | Zonography
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| when lesion has been localized and fine detail is needed - produces thinner sections | show 🗑
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| show | panoramic tomography
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| show | stereoradiography
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| common uses for stereoradiography | show 🗑
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