Which of the following is a method of explaining radiation to the public?

At the scene of a vehicle collision in which there are no apparent hazards, which of the following guidelines should be followed for establishing a danger zone?

A) There is no need to establish a danger zone when there are no apparent hazards. B) The danger zone should be 50 feet in all directions. C) The danger zone should be 150 feet in all directions. D) The danger zone should be 15 feet in all directions.

A less than optimal AP oblique lumbar vertebrae projection does not demonstrate the vertebra's superior and inferior articular processes in profile and the corresponding zygapophyseal joint spaces are closed

a. To obtain an optimal projection, move the central ray superiorly. b. The laminae will also be obscured on this projection. c. If the pedicles are also demonstrated at the midpoint of the vertebral bodies on this projection, the patient was rotated less than 45-degrees. d. If the pedicles are also demonstrated adjacent to the vertebra's lateral vertebral body borders on this projection, the patient would need to rotate more to obtain an optimal projection.