Procedure | Modality | Average effective dose (mSv) | Number of chest radiographs (PA/lateral) with equivalent radiation dose* |
Pelvic radiograph | Conventional radiography | 0.6 | 6 |
Abdominal radiograph | Conventional radiography | 0.7 | 7 |
Intravenous pyelogram | Conventional radiography | 2.5 | 25 |
Renogram | Nuclear medicine | 2.6 | 26 |
HIDA scan | Nuclear medicine | 3.1 | 31 |
ERCP | Conventional fluoroscopy or interventional radiology | 4 | 40 |
Small-bowel follow-through | Conventional fluoroscopy or interventional radiology | 5 | 50 |
Upper gastrointestinal series | Conventional fluoroscopy or interventional radiology | 6 | 60 |
CT pelvis | Computed tomography | 6 | 60 |
Gastrointestinal bleeding study | Nuclear medicine | 7.8 | 78 |
Barium enema | Conventional fluoroscopy or interventional radiology | 8 | 80 |
CT abdomen | Computed tomography | 8 | 80 |
Abdominal angiogram | Conventional fluoroscopy or interventional radiology | 12 | 120 |
Whole-body PET | Nuclear medicine | 14.1 | 141 |
CT triphasic liver | Computed tomography | 15 | 150 |
CT angiogram aorta | Computed tomography | 24 | 240 |
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