Table 3.

Changes in factors other than gastrointestinal gas (k).

Patient	Patient positioning	Value of k (min–max)
		Beam 1 (0°)	Beam 2 (270°)	Beam 3 (90°)	Beam 4 (195°)	Beam 5 (165°)
1	SP	0.977–0.998	0.986–0.995	0.985–1.002	0.970–1.000	0.975–1.004
	PR	0.967–1.005	0.960–0.992	0.972–1.004	0.970–1.004	0.971–1.004
2	SP	0.961–0.984	0.966–1.003	0.963–1.004	0.953–1.002	0.953–1.010
	PR	0.988–1.008	0.980–0.999	0.950–0.988	0.990–1.006	0.993–1.010
3	SP	0.983–1.000	0.971–0.996	0.979–1.001	0.973–0.999	0.975–1.000
	PR	0.898–0.975	0.934–0.989	0.934–0.991	0.876–0.966	0.899–0.965
4	SP	0.978–1.011	0.965–0.985	0.975–0.991	0.987–1.002	0.995–1.002
	PR	0.980–0.991	0.958–0.992	0.965–0.989	0.960–0.963	0.984–0.993
5	SP	0.971–0.983	0.961–0.985	0.975–0.998	0.990–1.005	0.978–1.006
	PR	0.992	0.988	0.968	1.001	1.001
6	SP	0.944–0.977	0.948–0.980	0.951–0.983	0.945–0.981	0.948–0.980
	PR	0.926	0.911	0.919	0.902	0.901
7	SP	0.918–1.000	0.945–0.963	0.946–0.976	0.952–0.955	0.946–0.964
	PR	0.891–0.964	0.900–0.984	0.903–0.975	0.860–0.941	0.905–0.982
8	SP	0.992–0.999	0.991–0.996	0.985–0.994	0.959–0.997	0.953–0.993
	PR	1.008	1.007	1.007	0.994	0.993
9	SP	0.981–0.996	0.952–0.985	0.913–0.959	0.975–0.996	0.975–0.995
	PR	0.916–0.988	0.856–0.897	0.860–0.897	0.830–0.944	0.854–0.920
10	SP	0.927–0.993	0.972–1.002	0.969–1.005	0.980–1.008	0.982–1.004
	PR	0.990	0.973	0.982	0.982	0.990

min, minimum value; max, maximum value; SP, supine position; PR, prone position.