Which document should be consulted to select the primary exposure factors?

• A. The technique chart
• B. The patient's insurance information
• C. The facility's budget
• D. The radiologist's preference book

Answer: (A)

The main idea is that exposure factors are chosen from a standard reference that relates patient size and exam type to baseline technical settings. The technique chart is that reference; it provides the recommended primary exposure factors (kVp, mA, exposure time) for different patient sizes and body parts so images come out with appropriate brightness, contrast, and sharpness while keeping dose reasonable. The chart is created through calibration and optimization for the specific imaging system, so it guides consistent technique across patients and operators.

Other options don’t serve this primary role. Insurance information has no bearing on how X-rays interact with tissue or what settings produce a good image. A facility budget isn’t used to determine technical exposure. A radiologist’s personal preferences might influence certain practices, but the standard starting point for selecting exposure factors is the technique chart, which is specifically designed for this purpose.