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Table 1 Standard average estimated radiation doses of common non-invasive chest imaging in adults (modified from refs. [2] and [21])

From: The risk of cumulative radiation exposure in chest imaging and the advantage of bedside ultrasound

Diagnostic procedures Effective dose (mSv) Equivalent CXRs number
Radiology
 Chest radiography (single postero-anterior film) 0.02 1
 Chest CT 6 to 8 300 to 400
 64-slice coronary CT 15 (3 to 32) 750 (150 to 1,600)
 Calcium score 3 (1–12) 150
Nuclear medicine
99mTc-Sestamibi (1100 MBq, 1 day) stress-rest 9.4 470
201Thallium stress/rest reinj. (185 MBq, double injection) 40.7 2,035
 PET N-13 ammonia stress-rest (1100 MBq) 2.4 120
 PET F-18 FDG rest (400 MBq, viability) 8 400
133Xenon (400 MBq, lung ventilation) 0.4 20
99mTc-MAA (185 MBq, lung perfusion) 2 100