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show | Potter-Bucky diaphragm
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a fixed kVp technique is fixed for a specific | show 🗑
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show | scatter radiation
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a grid is used to improve | show 🗑
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a Potter-Bucky diaphragm must move the grid___to the direction of the grid lines | show 🗑
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a Thoreaus filter combines all of the following except; silver, copper, tin, aluminum | show 🗑
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show | greater
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show | Al/Eq
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angulation across the long axis of a linear grid causes | show 🗑
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show | 10
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show | 60
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show | scatter increases
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show | the ability of the grid to remove scatter increases
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show | electrons
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show | exposure
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show | 4 to 5
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show | removing low-energy photons
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show | it decreases patient dose
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show | low-energy incident electrons
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show | narrow
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show | decrease patient dose, reduce x-ray tube wear, decrease time settings
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show | increase the consistency of image density, increase the consistency of image contrast, lengthen exposure latitude
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show | produce more scatter radiation than other systems
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for a grid to be properly focused, the x-ray tube must be located along the___line | show 🗑
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for a variable kVp exposure technique system, the kVp is primarily varied according to | show 🗑
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show | 3
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show | kVp
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show | for a given range of subject densities, contrasts, while the mAs is varied to achieve appropriate image density
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in general, low-energy x-ray photons | show 🗑
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in the early days of radiography, it was common practice to use a change of___kVp for every one cm of tissue thickness plus a constant | show 🗑
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most of the inherent filtration of a typical x-ray equipment comes from the | show 🗑
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show | diagnosing radiologists and image quality control radiographers
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show | photoelectric interaction
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show | radiographic contrast
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steps formed for a variable kVp exposure system should be in groups of___cm increments | show 🗑
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technique systems function best when a | show 🗑
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show | decreased contrast
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the amount of material that will reduce the intensity of the primary beam to one-half its original value is the | show 🗑
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show | increase in patient thickness, larger field size, decrease in atomic number of the tissue
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the collimator device is considered part of the___filtration | show 🗑
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show | subject contrast
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show | caliper
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the effective use of a variable kVp technique chart requires | show 🗑
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show | patient
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the half-value layer is typically expressed in | show 🗑
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the higher the kVp, the | show 🗑
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show | compton
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show | contrast, type of interaction, average photon energy
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show | 30
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the most common filter material used is | show 🗑
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the number of grid lines per inch is the grid | show 🗑
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the objective of optimal kVp is to determine the | show 🗑
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the optimal kVp must ensure | show 🗑
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show | mAs
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show | Thoreaus filter
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show | radiopaque strips
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show | absorb scatter, are made of dense material, have a high atomic number
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show | ratio
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the use of the max kVp as optimal causes a corresponding decrease in | show 🗑
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show | thicker, greater
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show | PEP
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show | inherent and added
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variable kVp systems | show 🗑
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show | inherent
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when AEC systems are used, the selection of___ factors is eliminated | show 🗑
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show | it will pass throught the body unaffected, be absorbed by the body, interact with the body and change direction
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show | producing phantom images
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when the lead strips run in a single direction in a grid, the grid pattern is described as | show 🗑
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when viewing phantom images, professionals are not asked to select the | show 🗑
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which grid would have the greates distance between lead strips | show 🗑
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show | 15:1
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which of the following elements would attenuate a greater percentage of the x-ray beam; hydrogen, barium, oxygen, carbon | show 🗑
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show | hydrogen
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which of the following materials are used as a filter; glass, oil, aluminum | show 🗑
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show | wedge
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the thickest portion of the wedge filter is placed over the less dense part of the patient | show 🗑
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a grid is a series of radiopaque strips that alternate with radiolucent interspace strips | show 🗑
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show | inherent
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