Jensen J E, Butler P F
Radiol Technol. 1978 Nov-Dec;50(3):251-7.
BENT (Breast Exposure: Nationwide Trends), a federal-state sponsored mammographic quality assurance program has demonstrated that unproductive radiation exposure can be reduced by identifying and correcting problems that result in poor image quality. BENT provides clinical personnel with knowledge on the performance of their mammographic system as a basis for possible improvements in image quality and for reductions in patient exposure.
全国趋势（BENT）是一项由联邦和州政府资助的乳房X线摄影质量保证计划，该计划表明，通过识别和纠正导致图像质量不佳的问题，可以减少无效辐射暴露。BENT为临床人员提供有关其乳房X线摄影系统性能的知识，作为改善图像质量和减少患者暴露的可能依据。
