Radiation dose estimates for spine imaging

Procedure	Approximate effective dose (mSv)	Comparable duration of natural background radiation (in years)
Spine radiograph (x-ray)	1.4	0.5
CT spine	8.8	3
Fluoroscopic interventional angiogram of the head and neck	5	1.7
CT angiogram of the head and neck	14	4.7

CT: computed tomography.

Data from:

RadiologyInfo.org. Available at: https://www.radiologyinfo.org/en/info.cfm?pg=safety-xray (Accessed on March 10, 2021).
Smith-Bindman R, Lipson J, Marcus R, et al. Radiation dose associated with common computed tomography examinations and the associated lifetime attributable risk of cancer. Arch Intern Med 2009; 169:2078.

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