What is the radiation dose of coronary computed tomography angiography (CCTA)?

Updated: Dec 21, 2017
  • Author: Eugene C Lin, MD; Chief Editor: Eugene C Lin, MD  more...
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Answer

Answer

The reported effective radiation doses for retrospectively gated, single-source, 64-slice CT scanning have ranged from 9.5-21.4 mSv. [3] However, various technologies and techniques have made it possible to lower the dose to less than 5 mSv, and doses of less than 1 mSv are possible in some patients.


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