Table V.

Relative CNR improvement of MLI over AS1200 at 2.5 MV beam energy.

MU	Air	Teflon	Delrin	Bone 20%	Bone 50%	Acrylic	Polystyrene	LDPE	PMP
4	3.9	4.2	2.9	2.2	2.7	2.2	2.8	2.1	2.6
3.5	3.9	4.1	2.8	2.1	2.6	2.1	2.8	2.1	2.5
3	3.8	4.1	2.8	2.1	2.6	2.0	2.7	2.1	2.5
2.5	3.8	3.9	2.7	2.2	2.5	2.0	2.7	2.2	2.3
2	3.7	3.8	2.7	2.0	2.4	2.0	2.8	2.1	2.5
1.5	3.6	3.6	2.7	2.0	2.2	2.2	2.5	2.1	2.3
1	3.4	3.3	2.6	2.0	2.2	2.0	2.6	1.9	2.1