. 2011 Jul 22;38(8):4563–4574. doi: 10.1118/1.3597566

Table 2.

In-air exposure, exposure rate, effective dose, and effective dose rate, assuming standard shielding apparel (Pb apron etc.) at locations about the table and throughout the operating room. The exposure (mR/mGy) and effective dose (mSv/mGy) are per unit absolute dose from a single CBCT scan. The corresponding exposure rate (mR/min) and effective dose rate (mSv/min) correspond to the rate during the scan.

Position	X_shielded (mR/mGy)	E_shielded (mSv/mGy)	$\overset{\cdot}{X}$ _shielded (mR/min)	$\overset{\cdot}{E}$ _shielded (mR/min)
P1 – 57 cm	2.38	0.021	2.23	0.020
P2 – 43 cm	2.48	0.022	2.33	0.021
P3 – 57 cm	3.61	0.033	3.38	0.031
P4 – 70 cm	1.90	0.017	1.78	0.016
P5 – 90 cm	0.49	0.004	0.46	0.004
P6 – 70 cm	1.40	0.013	1.31	0.012
P7 – 110 cm	0.36	0.003	0.34	0.003
1.0 m to isocenter	0.79	0.007	0.74	0.007
1.5 m to isocenter	0.13	0.001	0.12	0.001
2.0 m to isocenter	0.01	0.0001	0.01	0.0001