论文部分内容阅读
蕈样霉菌病一般采用3～8MeV的电子束,通过不同的方法使照射到病人皮肤的电子束能量降至2～4MeV,要求剂量分布尽可能均匀,X射线污染尽可能小。常用的照射方法有:(1)上下躯干分段治疗,(2)旋转治疗,(3)床移动照射,(4)大野全身照射。我们采用第一种方法治疗。 对于高于4MeV的电子束,应该设法降低能量。一种是在准直器出口处插入一块原子序数较低的散射箔,一般是C,Al等(见图1)。厚度可根据能量及对X线污染的要求选择(见图2,表1)。第
Mycosis fungoides generally use 3 ~ 8MeV electron beam, through different methods so that the energy of the electron beam irradiated to the patient’s skin down to 2 ~ 4MeV, the required dose distribution as uniform as possible, X-ray pollution as small as possible. Commonly used methods of irradiation are: (1) upper and lower trunk segment treatment, (2) rotation therapy, (3) bed movement irradiation, (4) Ono whole body irradiation. We use the first method of treatment. For electron beams above 4 MeV, you should try to reduce the energy. One is to insert a collimator at the exit of a lower atomic number of scattering foil, usually C, Al, etc. (see Figure 1). The thickness can be selected according to the energy and the requirements of X-ray pollution (see Figure 2, Table 1). No.