[dirtboy]

https://www.forbes.com/sites/jillianscudder/2017/06/16/astroquizzical-van-allen-belts-barrier-spaceflight/#5ac531146f8d

In the end, it seemed that these tactics worked; the on-board dose counters for the Apollo missions registered average radiation doses to the skin of the astronauts of 0.38 rad. This is about the same radiation dose as getting two CT scans of your head, or half the dose of a single chest CT scan; not too bad, though not something you should do every week.

[chimera]

NRC regulations regarding whole-body dose are quite conservative, and they limit radiation worker exposure to 5 rem per year. So if you get 0.38 rem for the lunar roundtrip, the regulations would allow you to make about 13 trips per year and not exceed the occupational exposure limit for whole-body dose. Chances are an exposure of 5 rems to the whole body would be hard to detect. For humans you start to see minor hematopoietic effects at around 10 rems for acute exposures. Serious effects start at about 300 rems. This is also for acute exposure.

[2ndDivisionVet]

Was there CGI in the 60’s?