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

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

• A. Converted to specific digital values
• B. Amplified for processing
• C. Normalized across the exposure field
• D. Compared to expected exposure values

Answer: (A)

Quantization is the step where a continuous detector signal is converted into a set of discrete digital values. In digital radiography, the detector produces an analog signal proportional to the x-ray exposure; this signal is then sampled and each sample is mapped to the nearest digital level by an analog-to-digital converter. That mapping to specific digital values is what quantization means, producing the pixel values used to form the image. It isn’t about amplifying the signal, normalizing brightness across the field, or comparing readings to expected exposures—the other processes relate to amplification, uniformity adjustments, or calibration, respectively. The number of available digital levels (bit depth) determines how finely the signal can be quantized, influencing potential quantization error.

Quantization is the step where a continuous detector signal is converted into a set of discrete digital values. In digital radiography, the detector produces an analog signal proportional to the x-ray exposure; this signal is then sampled and each sample is mapped to the nearest digital level by an analog-to-digital converter. That mapping to specific digital values is what quantization means, producing the pixel values used to form the image. It isn’t about amplifying the signal, normalizing brightness across the field, or comparing readings to expected exposures—the other processes relate to amplification, uniformity adjustments, or calibration, respectively. The number of available digital levels (bit depth) determines how finely the signal can be quantized, influencing potential quantization error.