Evaluation of plan quality and robustness of IMPT and helical IMRT for cervical cancer

Radiation Oncology

Table 4 Patient position uncertainty: two formations with 28 scenarios

Axes Endpoints	One creation with 12 scenarios
Axes Endpoints	1	2	3	4	5	6	7	8	9	10	11	12
X (mm)	5	−5	0	0	0	0	5	−5	0	0	0	0
Y (mm)	0	0	5	−5	0	0	0	0	5	−5	0	0
Z (mm)	0	0	0	0	5	−5	0	0	0	0	5	−5
CT density	2%	2%	2%	2%	2%	2%	−2%	− 2%	− 2%	− 2%	− 2%	− 2%
Diagonal Endpoints	The other creation with 16 scenarios
Diagonal Endpoints	1	2	3	4	5	6	7	8	9	10	11	12
XY (mm)	2.9	2.9	−2.9	− 2.9	− 2.9	2.9	2.9	− 2.9	2.9	2.9	−2.9	− 2.9
YZ (mm)	2.9	2.9	2.9	2.9	−2.9	− 2.9	− 2.9	− 2.9	2.9	2.9	2.9	2.9
XZ (mm)	2.9	−2.9	2.9	−2.9	− 2.9	− 2.9	2.9	2.9	2.9	−2.9	2.9	−2.9
CT density (%)	2%	2%	2%	2%	2%	2%	2%	2%	−2%	− 2%	− 2%	− 2%
	13	14	15	16
XY (mm)	−2.9	2.9	2.9	−2.9
YZ (mm)	−2.9	−2.9	−2.9	− 2.9
XZ (mm)	−2.9	−2.9	2.9	2.9
CT density (%)	−2%	−2%	−2%	−2%

ISSN: 1748-717X