Role of multi-parametric ultrasonography for the assessment and monitoring of functional status of renal allografts with histopathological correlation

Table 4 Comparison of shear wave elastography and interlobar artery resistive index values between biopsy positive and biopsy negative acute graft dysfunction (within-group B)

Biopsy proven?		Young’s modulus in kPa		Shear wave velocity in m/s		ILA RI
		No	Yes	No	Yes	No	Yes
Baseline	n	8	6	8	6	8	6
	Mean	30.77	31.29	3.19	3.23	0.66	0.65
	SD	3.43	2.62	0.19	0.13	0.13	0.09
	P value	0.766		0.704		0.943
1st FU	n	6	2	6	2	6	2
	Mean	30.70	30.81	3.19	3.20	0.61	0.67
	SD	3.98	0.81	0.20	0.04	0.09	0.04
	P value	0.951		0.948		0.229
2nd FU	n	9	2	9	2	9	2
	Mean	28.50	33.27	3.06	3.32	0.66	0.62
	SD	2.73	1.04	0.15	0.05	0.05	0.08
	P value	0.010		0.006		0.646
3rd FU	n	5	4	5	4	5	4
	Mean	28.06	31.64	3.06	3.24	0.63	0.68
	SD	1.66	1.83	0.09	0.10	0.07	0.07
	P value	0.022		0.037		0.391
4th FU	n	4	1	4	1	4	1
	Mean	29.16	27.78	3.10	3.02	0.64	0.59
	SD	0.51	-	0.04	-	0.05	-
	P value	-		-		-

Data were compared using independent samples t-test; P value < 0.05: Significant difference. FU: Follow up; ILA: Interlobar artery; RI: Resistive index.