Procedure | Modality | Average effective dose (mSv) | Number of chest radiographs (PA/lateral) with equivalent radiation dose |
Chest radiograph (posteroanterior) | Conventional radiography | 0.02 | 0.2 |
PA and lateral chest radiographs | Conventional radiography | 0.1 | 1 |
Thyroid scan (iodine 123) | Nuclear medicine | 1.9 | 19 |
Lung ventilation-perfusion scan | Nuclear medicine | 2.2 | 22 |
Thoracic angiogram | Conventional fluoroscopy or interventional radiology | 5 | 50 |
Parathyroid scan | Nuclear medicine | 6.7 | 67 |
Conventional coronary angiogram | Conventional fluoroscopy or interventional radiology | 7 | 70 |
CT chest | Computed tomography | 8 | 80 |
Nuclear cardiac stress test | Nuclear medicine | 9.4-12.8 | 94-128 |
Cardiac PET | Nuclear medicine | 14.1 | 141 |
CT pulmonary embolism protocol | Computed tomography | 15 | 150 |
Coronary angioplasty or stent | Conventional fluoroscopy or interventional radiology | 15 | 150 |
CT coronary angiogram | Computed tomography | 16 | 160 |
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