Table 3.

Mean equivalent doses to the rectum and bladder from proton therapy and intensity-modulated radiation therapy (IMRT) of the prostate in ten patients.

	Mean bladder absorbed dose (Gy)		Mean rectal absorbed dose (Gy)
Patient number	Protons	IMRT	Protons	IMRT
1	9.1	33.3	19.4	34.9
2	11.7	27.4	22.7	38.9
3	18.8	33.7	20.4	35.4
4	16.8	29.7	21.7	31.6
5	13.2	19.7	21.4	33.8
6	6.5	29.3	26.9	34.2
7	12.4	20.0	24.1	37.6
8	9.6	13.1	22.5	35.3
9	15.0	13.5	22.0	33.5
10	17.1	16.8	27.1	40.0
Mean	13.0	23.6	22.8	35.5
SD (1σ)	4.0	7.9	2.6	2.6

SD = standard deviation.