Table 2.

Pancreas COM motion for the investigated patient setup, considering each motion direction. COM motion data are reported for each patient and each investigated positioning (vacuum cushion, mask, compressor in prone and supine configurations). Median values and interquartile ranges were recovered from breathing phase COM motion. Each COM motion is intended with respect to breathing phase 3.

		PRONE			SUPINE
		LL (mm)	AP (mm)	SI (mm)	LL (mm)	AP (mm)	SI (mm)
Patient 1	Vacuum	$0.82\pm 1.69$	$0.08\pm 0.58$	$0.20\pm 1.67$	$-0.55\pm 1.84$	$0.80\pm 1.07$	$0.34\pm 2.28$
	Mask	$-2.36\pm 2.37$	$-0.37\pm 0.61$	$-0.67\pm 1.75$	$1.55\pm 2.94$	$0.07\pm 0.52$	$0.37\pm 2.15$
	Compressor	$0.21\pm 2.12$	$0.09\pm 0.49$	$0.28\pm 1.34$	$-0.02\pm 1.01$	$0.31\pm 0.59$	$1.29\pm 3.21$
Patient 2	Vacuum	$-0.47\pm 1.05$	$-0.07\pm 0.66$	$-0.42\pm 1.22$	$0.28\pm 0.75$	$0.10\pm 0.51$	$0.56\pm 1.00$
	Mask	$-1.38\pm 1.53$	$-0.30\pm 0.68$	$-0.68\pm 0.85$	$-0.26\pm 1.99$	$0.50\pm 0.68$	$0.07\pm 1.40$
	Compressor	$-0.08\pm 0.87$	$-0.06\pm 0.32$	$-0.04\pm 0.60$	$-1.66\pm 4.30$	$0.57\pm 1.06$	$0.45\pm 0.66$
Patient 3	Vacuum	$0.20\pm 3.07$	$-0.11\pm 0.77$	$2.38\pm 3.62$	$0.19\pm 2.26$	$0.36\pm 0.41$	$1.81\pm 1.30$
	Mask	$1.69\pm 3.05$	$0.50\pm 0.43$	$1.88\pm 1.71$	$-0.26\pm 1.26$	$0.25\pm 1.31$	$1.33\pm 1.39$
	Compressor	$0.34\pm 2.62$	$0.21\pm 0.61$	$0.55\pm 0.93$	‐	‐	‐
Patient 1	Vacuum	$1.99\pm 2.63$	$-0.06\pm 0.29$	$2.07\pm 3.69$	$-0.32\pm 1.48$	$-0.13\pm 0.67$	$-0.12\pm 0.72$
	Mask	$0.28\pm 1.87$	$-0.09\pm 0.49$	$-0.04\pm 0.66$	$-0.85\pm 3.13$	$-0.02\pm 0.15$	$0.29\pm 0.93$
	Compressor	$0.06\pm 4.66$	$0.21\pm 0.44$	$-0.03\pm 0.22$	$-0.35\pm 4.93$	$-0.18\pm 1.09$	$-0.75\pm 3.62$
Patient 5	Vacuum	$-0.26\pm 2.63$	$0.10\pm 0.78$	$-0.04\pm 1.31$	$-0.06\pm 1.95$	$0.59\pm 2.11$	$1.03\pm 1.48$
	Mask	$0.17\pm 1.15$	$0.43\pm 1.10$	$0.64\pm 1.38$	$-1.63\pm 2.46$	$-0.14\pm 0.51$	$-0.06\pm 0.51$
	Compressor	$-1.73\pm 4.16$	$0\pm 1.45$	$0.33\pm 2.06$	$-0.91\pm 1.09$	$0.52\pm 1.21$	$0.78\pm 2.31$