Muller-Runkel R, Vijayakumar S
Med Phys. 1986 Jul-Aug;13(4):539-43. doi: 10.1118/1.595859.
Electrons may be used beneficially for spinal axis irradiation in medulloblastoma children to avoid some of the long-term sequelae induced by megavoltage photons. However, the attenuation by the intervening bone ought to be considered. Three-dimensional computer treatment planning with inhomogeneity correction for electron beams is not yet generally available, and alternate methods are needed to evaluate the attenuation by the complex bony structure of the spine. Here, we present our experimental data showing the alteration in the electron isodoses due to the intervening spinous processes. Film dosimetric measurements were made in the vertebral columns obtained from autopsies of a goat, a dog, and a child. Our results show that electron beam therapy for the spinal axis is a viable option.
电子可有益地用于髓母细胞瘤患儿的脊髓轴照射，以避免兆伏光子引起的一些长期后遗症。然而，应考虑中间骨骼的衰减。电子束三维计算机治疗计划以及不均匀性校正目前尚未普遍可用，因此需要其他方法来评估脊柱复杂骨结构的衰减。在此，我们展示了我们的实验数据，这些数据显示了由于中间棘突导致的电子等剂量线的变化。通过对一只山羊、一只狗和一名儿童尸体解剖获得的脊柱进行胶片剂量测量。我们的结果表明，电子束疗法用于脊髓轴是一种可行的选择。
