Final answer:
The exact radiation exposure for an optimum quality digital image from a computed radiography imaging plate is not specified; it is based on the ALARA principle and varies by technology and application. Standard doses for different X-ray procedures like chest or dental range from 0.1 mSv to 10 mSv.
Step-by-step explanation:
The optimum level of radiation exposure required for a computed radiography imaging plate to produce a high-quality digital image is generally the minimum amount that will achieve a diagnostic image, balancing patient safety with image clarity. The specific answer to this question requires guidance from current radiography imaging standards and research. While I can provide general information about radiation doses for various medical imaging techniques, the specific dose for an 'optimum quality digital image' from a computed radiography imaging plate is not provided here, and without more specific data or a reference standard, it would not be responsible to estimate an answer. Diagnostic radiation doses depend on the technology used and the part of the body being imaged, and the doses have been reduced over time through improved techniques and more sensitive detectors.
For example, chest X-rays give one of the lowest doses at about 0.1 mSv to the tissue directly imaged, with a CT scan reaching upwards to about 10 mSv. Dental X-ray exposures are approximately 5 mSv (0.5 rem). It is important to always use the ALARA principle (As Low As Reasonably Achievable) to minimize radiation exposure while still obtaining clinically useful images.