Table 2. SAW group velocities of ex vivo porcine urinary bladder during loading and unloading of water.

Content (ml)			0	50	100	150	200
SAW group velocity (m/s)	Load	Bladder body	6.54 ± 0.87	7.69 ± 0.61	8.35 ± 1.14	9.62 ± 1.18	12.38 ± 0.93
		Bladder neck	2.13 ± 0.41	3.34 ± 0.62	4.57 ± 0.57	6.79 ± 0.39	9.4 ± 0.45
	Unload	Bladder body	6.41 ± 0.93	7.55 ± 0.78	8.06 ± 0.79	9.42 ± 0.81	12.38 ± 0.93
		Bladder neck	2.25 ± 0.25	3.38 ± 0.34	4.26 ± 0.51	6.57 ± 0.48	9.40 ± 0.46
Young’s modulus (kPa)	Load	Bladder body	146.96 ± 2.60	203.19 ± 1.28	239.57 ± 4.47	317.98 ± 4.78	526.62 ± 2.97
		Bladder neck	15.59 ± 0.58	38.33 ± 1.32	71.76 ± 1.12	158.42 ± 0.52	303.61 ± 2.97
	Unload	Bladder body	141.18 ± 2.97	195.86 ± 2.09	223.22 ± 2.14	304.90 ± 2.25	526.62 ± 1.64
		Bladder neck	17.39 ± 0.21	39.25 ± 0.40	62.36 ± 0.89	148.32 ± 0.79	303.61 ± 1.64