Final answer:
The glandular dose as a percentage of the entrance skin exposure (ESE) varies and is critically calculated for radiological procedures to ensure patient safety. It is not possible to state a universal percentage without specific data.
Step-by-step explanation:
The percentage of glandular dose relative to the entrance skin exposure (ESE) varies depending on numerous factors, including type of radiological procedure, patient positioning, exposure parameters, and equipment used. Glandular dose is specifically important in mammography, where a significant amount of radiation can be absorbed by the breast glandular tissue. The actual percentage of glandular dose to ESE is a specific and calculated value, which is critical in ensuring patient safety and minimizing the risk of radiation-induced cancer to sensitive glandular tissue. However, without data specifying the imaging modality and conditions, it is not possible to authoritatively state a specific percentage that would apply universally.