| 
      
        | Organ | kVp | Measured ESD | Error% | Calculated ESD | Error% |  
        | Chest (PA) | 50-60 | 0.23-0.57 | 0.01-0.05 | 0.19-0.6 | 23-5.3 |  
        | Skull | 50-60 | 2.03-5.1 | 0.03-0.08 | 1.7-5.5 | 16.3-7.8 |  
        | Abdomen (AP) | 60-70 | 2.58-3.54 | 0.05-0.09 | 2.34-3.84 | 10.9-8.5 |  
        | Pelvis (AP) | 70-80 | 6.3-13.6 | 0.07-0.1 | 6.12-13.97 | 2.9-2.7 |  
        | Lumbar spine (AP) | 60-80 | 4.1-7.1 | 0.1-0.2 | 3.8-7.4 | 7.3-4.2 |  |