Receptor Exposure I - Video Lesson

Hey, everybody. Welcome back. This lesson is about a topic called receptor exposure. Receptor exposure is exactly what it sounds like. This describes the amount of radiation striking the image receptor. For example, when a large number of x-ray photons pass through the patient and reach the receptor, that results in a higher receptor exposure. But when only a few x-ray photons reach the image receptor, that results in a lower receptor exposure. So why does receptor exposure matter? The quantity of photons striking the image receptor can have a significant effect on image quality. These four images were exposed to different levels of radiation. That is different receptor exposures. Notice that extremely low receptor exposure creates an artifact called quantum model. This is a patchy or blotchy appearance that occurs when too few photons stray