Use of Contrast-Enhanced Ultrasound to Study Relationship between Serum Uric Acid and Renal Microvascular Perfusion in Diabetic Kidney Disease

Table 3

Ultrasound parameters of groups with different levels of eGFR.

Parameters	Normal control (NC)	Diabetic kidney disease (DKD)
		eGFR ⩾ 60 mL/min/1.73 m^2	eGFR < 60 mL/min/1.73 m^2
Number	26	29	36
IMAX (%)
RT (s)
TTP (s)
mTT (s)
AUC
AUC1	1795 (1439–2257)^*	1355 (1103–1610)	1100 (988.3–1396)
AUC2

Values are represented as mean ± standard error for normal distributed data; otherwise, as median (25%–75% interquartile). , compared to DKD patients with normal SUA; , compared to normal control. Ultrasound parameters abbreviations used are as follows: IMAX, maximum intensity; RT, rise time; TTP, time to peak; mTT, mean transit time; AUC, the area under the perfusion curve; AUC1, area under the ascending curve; AUC2, area under the descending curve.