Chapter 12: Scatter Control
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air gap technique | show 🗑
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show | Simplest type of beam-restricting device, constructed of a flat piece of lead that has a hole in it
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show | Automatically limits the size and shape of a primary beam to the size and shape of the IR. Also called a positive beam-limiting device
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beam-restricting device | show 🗑
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beam restriction | show 🗑
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Bucky | show 🗑
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show | Can be used to determine the adjustment in milliampere/second needed when changing from using a grid to non-grid (or vice versa) or for changing to grids with different grid ratios; also called the grid-conversion factor (GCF)
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collimation | show 🗑
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collimator | show 🗑
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cone | show 🗑
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convergent line | show 🗑
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show | An imaginary point, if imaginary lines were drawn from each of the lead lines in a linear focused grid
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show | Has lead lines that run at a right angle to one another
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show | Has lead lines that run at a right angle to one another
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show | Essentially an aperture diaphragm that has an extended flange attached to it
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focal distance | show 🗑
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show | The recommended range of SID measurements that can be used with a focused grid
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focused grid | show 🗑
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grid | show 🗑
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grid cap | show 🗑
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show | An IR that has a grid permanently mounted to its front surface
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show | Can be used to determine the adjustment in milliampere/second needed when changing from using a grid to a non-grid (or vice versa) or for changing to grids with different grid ratios; also called the Bucky factor
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grid cutoff | show 🗑
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grid focus | show 🗑
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grid frequency | show 🗑
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grid pattern | show 🗑
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show | The ratio of the height of the lead strips to the distance between them
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show | Radiolucent strips between the lead lines of a grid, generally made of aluminum
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show | Changes the shape and size of the projected x-ray field; similar to an aperture diaphragm
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linear grid | show 🗑
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show | A zebra pattern artifact that can occur during CR imaging if the grid frequency is similar to the laser scanning frequency or if a grid cassette is placed in a Bucky
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show | Has lead lines that run parallel to one another; also called a parallel grid
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show | Has lead lines that run parallel to one another; also called a nonfocused grid
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show | Automatically limits the size and shape of the primary beam to the size and shape of the IR; also called an automatic collimator
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wafer grid | show 🗑
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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