>Both are total body exposures, no. Again, you just don't get it. The absorbtion site and effects on it also depends on the type and frequency of the radition.

>Both are total body exposures, no. Again, you just don't get it. The absorbtion site and effects on it also depends on the type and frequency of the radition. Back-scatter is mostly absorbed by skin while the radiation experinced while in the flight comes in different frequency range (more energetic gamma rays which pass through and backscatter less from the matter, incl. aircraft shell and human body and thus result in more even absorbtion through the body).