Just curious - radiation dose for head and neck CT Angiography?

I've recently had this procedure done in the ER (sudden vision problem/headache), there were two scans, one w/ and one w/o contrast and doctor did not discuss the radiation dose I'd receive with me. I'm just trying to keep track of my total lifetime dose due to having had 2 CT scans earlier in life (for other causes/reasons). I've looked on the web but it was quite conflicting, I saw anything from ~2mSv to 15mSv.

Thanks for anyone who could help answer!

submitted by /u/amy_sononu
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source https://www.reddit.com/r/Radiology/comments/s5pzbw/just_curious_radiation_dose_for_head_and_neck_ct/

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