Coronary CT angiography (CCTA)  can be helpful to diagnose the extent and severity of nonobstructive and obstructive CAD, as well  as high-risk features of  atherosclerotic  plaque (positive remodeling, low attenuation plaque). Fractional flow reserve  with  CT (FFR-CT) provides additional information about  ischemia related to lesion. Dosimetry is low for CCTA, with effective doses for most patients in the 3 to 5 mSv range.
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Chest pain chest x ray
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Eye pain chest x ray