Kidney diagram

Renal dynamic non-imaging examination is a non-imaging examination for understanding renal function and upper urinary drainage. The most commonly used tracer is 131I-OIH. It is generally believed that in the absence of urinary tract obstruction, renal index (RI) can better reflect renal function. Normal RI ≥ 45%; 30% to 44% are mildly impaired renal function; 20% to 29% are moderately impaired; <20% are severely impaired. The renal function of normal elderly people has a natural decline. After 40 years of age, the RI value has a tendency to decrease. It should be considered when judging renal function.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.