If the $u$-value is overdispersed, $u > 1.96$, it should be indicative of either - A non-homogeneous exposure to low-LET radiation. - An exposure to a high-LET radiation.
If it is suspected an exposure to low-LET radiation, partial or heterogeneous dose estimation should be applied.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.