I thought 1000mSv seemed low. I recently had a lung perfusion scan where I inhaled a saline vapor with technetium in it and I was the x-ray source for the imag

I thought 1000mSv seemed low. I recently had a lung perfusion scan where I inhaled a saline vapor with technetium in it and I was the x-ray source for the imaging. When I got home I measured 43mSv/hr. I must be pretty close to the NASA limit. Too bad I'm not an astronaut though. Would having a medical scan cause an astronaut to have a reduced usable lifetime?