Table 3.

Conventional and MRIG-CBT plans. Analysis with respect to tumor coverage and organs-at-risk sparing

Plan characteristics	All sizes (%)		Non-bulky (%)		Low-bulky (%)		Bulky (%)
	Conv.	MRIG.	Conv.	MRIG.	Conv.	MRIG.	Conv.	MRIG.
Point A
Over Rx +5%	2	35	0	13	0	37	5	48
Within Rx ±5%	98	16	100	13	100	11	95	24
Under Rx –5%	0	49	0	73	0	53	0	29
ICRU point over 80% Rx
Rectum ICRU	22	22	33	13	16	21	19	29
Bladder ICRU	42	47	27	13	58	47	38	71
HR-CTV D90
Over Rx +5%	33	0	53	0	47	0	5	0
Within Rx ±5%	16	56	33	87	11	68	10	24
Under Rx –5%	51	44	13	13	42	32	86	76
D2cc over OAR limit
Rectum D2cc	20	0	13	0	26	0	19	0
Bladder D2cc	29	0	13	0	37	0	33	0
Sigmoid D2cc	18	0	7	0	5	0	38	0
D2cc within ±5% of OAR limit
Rectum D2cc	7	9	7	0	0	0	14	24
Bladder D2cc	13	44	20	13	5	47	14	62
Sigmoid D2cc	11	9	13	0	11	0	10	24

OAR – organ-at-risk, D_2cc, D_0.1cc – minimum dose to the hottest 0.1 cc or 2 cc of the OAR volume, Rx – prescribed dose, HR-CTV – high-risk clinical target volume, D₉₀ – minimum dose to the hottest 90% of the volume