Quiz 5 Review

2. H&D ________ is the graphic relationship between optical density and radiation exposure.
3. Spatial _________ refers to the ability to image small objects that have high contrast.
5. Subject ________ is determined by the size, shape, x-ray attenuating characteristics of the anatomy, and the kVp of the beam.
6. The most important factor for determining spatial resolution.
9. The three geometric factors of producing quality images are magnification, __________, and focal-spot blur.
12. This type of grid increases the patient radiation dose.
13. Scatter radiation increases as the x-ray beam field size ___________.
15. Under no circumstance should the x-ray beam ________ the size of the image receptor.

1. The aperture diaphragm, cones or cylinders, and the variable-aperture collimator are types of beam _________.
4. Radiographic _________ is the random fluctuation in the OD of the image.
7. This reduces patient radiation dose and improves contrast resolution.
8. The _________ law states the OD is proportional only to the total energy imparted to the film and independent of the exposure time.
10. Distortion depends on object _________, position, and shape.
11. This is the most commonly used type of grid.
14. The main disadvantage of parallel and crossed grids is grid _______.