The definitions of the energy dose for water as a measured quantity for the entire sector of radiotherapy gives rises to practical problems when implemented for dosimetry of soft X-rays, as the flat chambers which are commonly used in this energy range cannot be applied to a water phantom. For this reason, the ionization chamber is inserted into the surface region of a solid-state phantom.
DIN 6809-4-1988由德国标准化学会 DE-DIN 发布于 1988-12。
DIN 6809-4-1988 在中国标准分类中归属于: C43 医用射线设备,在国际标准分类中归属于: 17.240 辐射测量。
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