Which device converts photostimulated luminescence (PSL) to an electronic signal for display?

• A. Analog to digital converter (ADC)
• B. Digital signal processor (DSP)
• C. Image processor
• D. Flat-panel detector

Answer: (A)

The correct answer is that the device which converts photostimulated luminescence (PSL) to an electronic signal for display is the analog to digital converter (ADC). In digital radiography, particularly in systems that utilize photostimulable phosphor (PSP) technology, when an image is captured, the phosphor plates store the energy from the X-rays. When these plates are stimulated by a specific light to release the stored energy, they emit photostimulated luminescence.

The analog to digital converter plays a critical role in this process by converting the analog signals produced by the emitted PSL into a digital format. This digital signal can then be processed, stored, and displayed on a computer screen, allowing for further image manipulation and analysis.

While the digital signal processor, image processor, and flat-panel detector contribute to the overall imaging workflow, they do not specifically handle the conversion of photostimulated luminescence to an electronic signal. The digital signal processor is involved in manipulating or enhancing the image post-conversion, the image processor handles the processing of images for display and analysis, and the flat-panel detector captures the X-ray images directly without the PSL conversion step involved in PSP systems.