Imaging Effective dose μSv
Intra oral radiograph ˂8.3
Panoramic 9 - 26
Cephalometric radiograph 3 - 6
Cone beam CT( focused field of view) (dento-alveolar) 5 - 38.3
Full mouth series radiograph 35 - 388
Cone beam CT - Craniofacial 68 - 599
Medical fan beam CT – maxilla and mandible 2000
Table 1: Comparison of effective radiation dosage among Cone beam CT, conventional radiography and Medical fan beam CT [3,4].