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Table 4

Dose ratios between the O-ring system and the C-arm system for a pelvic acquisition.

Organ Dose ratio O-ring system/C-am system for a pelvic acquisition
Ratio by organ Mean ratio for the organs in this sector Section of the phantom represented in Figure 4
Brain 2.1 2.5 Section 1
R. Eye 4.1
L. Eye 2.2
Esophagus 1.7
Thyroid 2.5 1.7 Section 2
R. Lung 1.4
L. Lung 0.8
R. Breast 2.3
L. Breast 1.9
Heart 1.3
Liver 1.5 1.2 Section 3
Spleen 1.2
Stomach 1.2
Pancreas 0.9
R. Kidney 1.4 1.5 Section 4
L. Kidney 0.9
Colon 1.6
Uterus 2.2
   Mean ratio 1.7

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