Chin L M, Kijewski P K, Svensson G K, Bjärngard B E
Int J Radiat Oncol Biol Phys. 1983 May;9(5):723-9. doi: 10.1016/0360-3016(83)90241-9.
The applications of a computer-controlled radiation therapy system to optimize dose distributions in two dimensions are explored. This study is limited to a target volume with constant cross-section along an axis parallel to the long axis of the patient. The machine components that are continuously varied during treatment are the dose rate, the gantry angle, and the four independent collimator jaws, two of which can cross the beam centerline. Basic control strategies, treatment planning and delivery techniques are illustrated with clinical examples. We conclude that the computer-controlled radiation therapy system can easily and reliably deliver dose distributions which are significantly better than those produced by conventional multiple-field techniques.
探讨了计算机控制的放射治疗系统在优化二维剂量分布方面的应用。本研究仅限于沿与患者长轴平行的轴具有恒定横截面的靶体积。治疗过程中连续变化的机器组件包括剂量率、机架角度和四个独立的准直器钳口，其中两个可以穿过射束中心线。通过临床实例说明了基本控制策略、治疗计划和交付技术。我们得出结论，计算机控制的放射治疗系统能够轻松、可靠地提供比传统多野技术产生的剂量分布明显更好的剂量分布。
