During digital image formation, quantization occurs at which device?

During digital image formation, quantization occurs at which device?

• A. Display Monitor
• B. X-Ray Tube Housing
• C. Control Console
• D. ADC

Answer: (D)

Quantization is the step that turns a continuous electrical signal into discrete digital values. In digital radiography, the detector’s analog output, which is proportional to the X-ray exposure, is fed into an analog-to-digital converter. The ADC samples this signal and assigns it to one of a finite set of gray levels based on the system’s bit depth, creating the digital image data that can be stored, processed, and displayed. The display monitor simply renders the digital data, while the X-ray tube housing and control console do not perform the analog-to-digital conversion.

Quantization is the step that turns a continuous electrical signal into discrete digital values. In digital radiography, the detector’s analog output, which is proportional to the X-ray exposure, is fed into an analog-to-digital converter. The ADC samples this signal and assigns it to one of a finite set of gray levels based on the system’s bit depth, creating the digital image data that can be stored, processed, and displayed. The display monitor simply renders the digital data, while the X-ray tube housing and control console do not perform the analog-to-digital conversion.