Answer the following statement(s) true (T) or false (F)
1. The input phosphor has a concave shape and a diameter of approximately 4 inches.
2. Electrostatic focusing lenses guide the stream of electrons as they travel from photocathode to ADC.
3. The dramatic increase in brightness at the output phosphor is directly attributable to the magnification gain and flux gain.
4. Contrast resolution is the ability to visually distinguish between anatomical structures of similar tissue density.
5. The back-and-forth motion of the grid blurs the radiographic image and increases scatter radiation.
1. FALSE The input phosphor has a convex shape and a diameter of approximately 810 inches.
2. FALSE The electrons travel from the photocathode to the anode.
3. FALSE Increase in brightness at the output phosphor is directly attributable to minification gain and flux gain.
4. TRUE Contrast is the difference between adjacent densities.
5. FALSE The back-and-forth motion of the grid assists in reducing scatter radiation while blurring grid lines to make them less noticeable on a radiographic image.
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