Quantization is a digital radiography process through which receptor readings are:

Quantization is a crucial step in digital radiography that involves converting the analog signal received from the radiographic receptor into specific digital values. This process allows the continuous data captured by the imaging receptor, which can have an infinite range of values, to be represented in a finite number of discrete values. Each digital value corresponds to a specific intensity level of the X-ray exposure, enabling the creation of a digital image that can be easily processed, stored, and analyzed.

The importance of quantization cannot be overstated, as it directly impacts the image quality and the ability to interpret the data accurately. This transformation is essential for further processing and also influences the contrast and clarity of the final image. However, quantization itself is focused specifically on the conversion of the receptor's analog readings into defined numerical values, making option B the correct answer in this context.