What role does Am-Si play in the imaging process?

Amorphous silicon (Am-Si) plays a crucial role in the imaging process, particularly in digital radiography and fluoroscopy, by converting light into electrons. In this context, after an X-ray exposure occurs, the imaging receptor—often a flat-panel detector—uses Am-Si as a photosensitive layer. When X-rays hit this layer, they generate visible light. The Am-Si layer then serves to convert this light into electrical charges (electrons), which can be processed to form the final image.

The ability of Am-Si to effectively convert light into electrons is essential for capturing the image in a manner that allows for enhancement and manipulation through subsequent digital processing. This technology is fundamental for improving image quality and achieving better detail and contrast in medical imaging. The other options do not accurately describe the specific function of Am-Si in the imaging process.