Table 3.

Statistically significant differences resulted from Conover post hoc multiple comparisons tests associated to Friedman's test among COM motion of prone/supine positioning, immobilization systems (vacuum, mask, and compressor), and pancreas segmentations (pancreas, head, body, and tail). Any statistically significant difference is marked with a symbol (X, •, or |), hence no symbols means no statistically relevant differences found with all the tested comparison groups. Different symbols among evaluated data (column) mean a statistically significant difference was observed between related investigations (rows). Where multiple symbols are depicted, investigations with the same symbol should be considered homogeneous.

	Patient 1				Patient 2				Patient 3				Patient 4				Patient 5				All Patients
	LL	AP	SI	3D	LL	AP	SI	3D	LL	AP	SI	3D	LL	AP	SI	3D	LL	AP	SI	3D	LL	AP	SI	3D
Prone/Supine	X	X	X			X	X	X					X				X		X			X	X	X
Vacuum		X	X				X			X	X		X		X							X		X
Mask	X	|	|				|			|			|		|	X						|		|
Compressor	|	X	X				X			X	|		|		|	|			X	X			X	X
Pancreas				X	X	X	X•	X•				X|			X	X			X	X			X	X
Head				X	X	X|	|	•		X		X				X			X	X			X	•
Body				|	|	|	X|	|		|		|			X	X			X	|			X	|
Tail				X	X	•	•	X		|		|			|	•			|	X			|	|