Proto A V, Lane E J
AJR Am J Roentgenol. 1978 May;130(5):859-66. doi: 10.2214/ajr.130.5.859.
High kilovoltage radiography had its beginning with super-voltage technique and is presently accomplished with the 350 KV chest x-ray system. The physical reasons to explain the improved visibility with this technique are: (1) absorption coefficients of bone and soft tissue, (2) more uniform bone visibility, (3) x-ray spectrum, (4) visual responses, and (5) depth resolution. In this study, 350 kV and 120 kV chest x-ray techniques were compared by evaluating 15 parameters. Based on our data and the results of previous large clinical studies, a list of disadvantages and advantages is offered. The entrance dose for an average 350 kV posteroanterior chest radiograph is 8 mR, or about one-third that with 90 kV technique.
高千伏摄影始于超高压技术，目前通过350千伏胸部X光系统来实现。解释这项技术能提高可见度的物理原因如下：（1）骨骼和软组织的吸收系数；（2）骨骼可见度更均匀；（3）X射线光谱；（4）视觉反应；（5）深度分辨率。在本研究中，通过评估15项参数对350千伏和120千伏胸部X光技术进行了比较。基于我们的数据以及之前大型临床研究的结果，列出了优缺点。一张普通的350千伏后前位胸部X光片的入射剂量为8毫伦琴，约为90千伏技术的三分之一。
