The only way to get two overlying images is to double expose the cassette.

• A. True
• B. False
• C. Sometimes
• D. Never

Answer: (B)

The concept is about how two images can end up on the same display or medium. While double exposing the same cassette will indeed create a single image that contains two exposures, that isn’t the only way to get two overlapped images. In modern imaging, you can generate and view two overlaid images through digital means—overlaying or fusing two separate radiographs in software, or displaying high- and low-energy datasets together in dual‑energy imaging. Those methods achieve the same visual result of two images overlapping without physically exposing the same cassette twice. So the statement isn’t correct; there are other routes to two overlying images besides double exposure.