nephrogram

The renal dynamic non-imaging method is a non-image examination method 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, the renal index (RI) can better reflect renal function. Normal people have RI ≥ 45%; 30% to 44% are mildly impaired in renal function; 20% to 29% are moderately impaired; <20% are severely impaired. There is a natural decline in renal function in normal elderly people. The RI value tends to decrease after age 40, and should be considered when judging renal function. Basic Information Specialist classification: urinary examination classification: urine / kidney function test Applicable gender: whether men and women apply fasting: fasting Tips: Maintain normal sleep and diet. Normal value The normal kidney curve is divided into three segments a, b, and c. After atracheal tracer, there is a sudden rise of a segment about 10s, reflecting the renal blood perfusion; b segment is a slow rising segment after a segment, and the peak time is more than 2 to 3 minutes, mainly reflecting renal function and renal blood. Flow rate; segment c is the descending segment after reaching the peak value, which decreases exponentially during normal period. The rate of decline is related to the degree of urinary flow and urinary tract patency, and also reflects renal function in the case of urinary tract patency. The morphology and height of the kidney maps on both sides are basically similar. Clinical significance Abnormal results: Renal index (RI) can better reflect renal function. Normal people have RI ≥ 45%; 30% to 44% are mildly impaired in renal function; 20% to 29% are moderately impaired; <20% are severely impaired. There is a natural decline in renal function in normal elderly people. The RI value tends to decrease after age 40, and should be considered when judging renal function. The person who needs to be examined; suspected to have abnormal kidney function. Precautions Taboo before check: Maintain normal sleep and diet. Requirements for examination: The patient should actively cooperate with the doctor and the doctor should check it carefully to avoid the result. Inspection process Intravenous rapid injection of 131I-OIH 185 ~ 555kBq (5 ~ 15mCi), immediately traced by the nephrogram for 20min, the time curve of the left and right kidney area is the kidney map. Not suitable for the crowd Inappropriate crowd: severe urinary tract infections. Adverse reactions and risks No related complications or hazards.