Ultrasonic image changes of renal parenchyma and renal sinus tissues in elderly patients

878 enrolled subjects were divided into 4 age groups: control group, aged 18-44, medium group, aged 45-59, senil group, aged 60-74 and older group, aged 75-90. Kidney-renal cavity parenchyma and the ratio of kidney-renal cavity parenchyma had varied according to the age and the most obvious variation was in the eldest group. There was a strictly negative correlation between the age and the variation of kidney parenchyma and kidney parachyma – renal cavity ratio.