Table 2.

Positions and view angles corresponding to the best visibility for each plan tested.

Site	Plan	Front $(-180<\varphi <0)$						Rear $(0<\varphi <180)$
		x (mm)	y (mm)	z (mm)	$\varphi$(°)	$\theta$(°)	Vis. (%)	x (mm)	y (mm)	z (mm)	$\varphi$(°)	$\theta$(°)	Vis. (%)
L Breast	A	1200	−3000	1400	−68.2	23.4	88.5	1600	2800	1200	60.3	20.4	60.8
	B	1400	−3000	1800	−65.0	28.5	59.1	1400	2800	1800	63.4	29.9	65.9
	C	1200	−3000	1800	−68.2	29.1	100.0	1800	2800	2000	57.3	31.0	99.2
	D	1000	−3000	2200	−71.6	34.8	56.9	2000	2800	1000	54.5	16.2	57.4
	E	1200	−3000	1800	−68.2	29.1	77.1	1400	2800	2000	63.4	32.6	75.3
	Mean	1200	−3000	1600	−68.2	26.3	74.3	1600	2800	1600	60.3	26.4	68.5
R Breast	A	−1000	−3000	1800	−108.4	29.6	88.4	−1800	2800	1800	122.7	28.4	73.2
	B	−600	−3000	2000	−101.3	33.2	80.3	−1800	2800	1400	122.7	22.8	68.5
	C	−600	−3000	2000	−101.3	33.2	63.5	−1800	2800	1800	122.7	28.4	59.8
	D	−800	−3000	2200	−104.9	35.3	65.0	−1800	2800	1200	122.7	19.8	56.7
	E	−1200	−3000	1800	−111.8	29.1	82.3	−1800	2800	2000	122.7	31.0	90.7
	Mean	−1000	−3000	1800	−108.4	29.6	74.5	−1800	2800	1400	122.7	22.8	67.7
HN	A	−200	−3000	2200	−93.8	36.2	24.5	−2400	2800	800	130.6	12.2	35.9
	B	−600	−3000	2000	−101.3	33.2	30.7	2600	2800	600	47.1	8.9	42.5
	C	0	−3000	2000	−90.0	33.7	26.4	−2400	2800	200	130.6	3.1	35.8
	D	0	−1800	1400	−90.0	37.9	25.9	−2200	2800	1200	128.2	18.6	38.2
	E	200	−3000	2000	−86.2	33.6	27.8	−2600	2800	600	132.9	8.9	54.2
	Mean	−400	−3000	2000	−97.6	33.5	26.0	−2400	2800	600	130.6	9.2	40.2
Prostate	A	800	−3000	1600	−75.1	27.3	53.9	1400	2800	1600	63.4	27.1	51.9
	B	600	−3000	600	−78.7	11.1	60.4	1400	2800	2000	63.4	32.6	55.0
	C	1000	−3000	1600	−71.6	26.8	55.6	−600	2800	2400	102.1	40.0	55.2
	D	800	−3000	1800	−75.1	30.1	56.1	−1000	2800	2200	109.7	36.5	61.1
	E	−800	−3000	1800	−104.9	30.1	54.7	1000	2800	2200	70.3	36.5	57.0
	Mean	1000	−3000	1600	−71.6	26.8	55.1	1200	2800	2000	66.8	33.3	54.7