If a radiographic procedure uses no intensifying screens, what is typically required to achieve acceptable image density?

• A. A lower X-ray exposure and dose
• B. A longer exposure without changing dose
• C. An alternative to increase film speed, such as larger film
• D. A higher X-ray exposure, increasing patient dose

Answer: (D)

When there are no intensifying screens, the film must respond directly to X-ray exposure, and it is far less efficient at converting X-rays into a visible image. Intensifying screens normally boost density by converting X-rays to light, which then exposes the film more effectively. Without that light amplification, you need much more X-ray exposure to achieve acceptable density, which means a higher patient dose. Lowering exposure would yield an underexposed image, and simply changing film size or speed doesn’t compensate for the lack of screen efficiency—the dose must be increased to reach workable density.