Frank E D, Stears J G, Gray J E, Winkler N T, Hoffman A D
Radiol Technol. 1983 May-Jun;54(5):343-7.
The posteroanterior projection was studied to determine if it could be a substitute for the commonly used anteroposterior projection as a method of reducing x-ray exposure to specific radiosensitive organs during intracranial tomography and scoliosis radiography. The use of the posteroanterior projection resulted in a reduction of 95% in exposure to the lens of the eye during intracranial tomography and of more than 90% to the thyroid, sternum, and breasts during scoliosis radiography. In addition to the major reduction in radiation exposure, the diagnostic capability of the examination was not reduced and comfort in most patients was not affected.
对后前位投照进行了研究，以确定其是否可以替代常用的前后位投照，作为在颅内断层扫描和脊柱侧弯X线摄影期间减少对特定放射敏感器官的X线照射的一种方法。使用后前位投照可使颅内断层扫描期间眼部晶状体的照射减少95%，脊柱侧弯X线摄影期间甲状腺、胸骨和乳房的照射减少90%以上。除了大幅减少辐射暴露外，检查的诊断能力并未降低，大多数患者的舒适度也未受影响。
