The purpose of digital photography is to greatly decrease patient's acceptabledose, and to improve the quality of X-ray image.
实现数字化摄影的目的，就是为了在提高X线影像质量的同时，大幅降低患者的接受剂量。
2
Through the optimization analysis, the acceptable, reasonable and practical personal dose constraint value has been suggested.
通过最优化分析，提出了可接受与合理达到、切合我国铀矿冶实际状况的个人剂量约束值。
3
The treatment is then increased progressively to higher doses in successive groups of volunteers, provided the safety and tolerability at the previous dose is acceptable.