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Using quantitative ultrasound to estimate renal maturation
1Department of Pediatrics, National Taiwan University Hospital, Taipei, R.O.C.
Zhonghua Minguo Xiao Er Ke Yi Xue Hui Za Zhi [Journal]. Zhonghua Minguo Xiao Er Ke Yi Xue Hui
|September 1, 1993
Summary
Renal cortex echogenicity in neonates is higher than in adults. This kidney-to-liver echogenicity ratio decreases significantly by age two, as shown by ultrasonography.
Area of Science:
- Pediatric Radiology
- Medical Imaging
- Nephrology
Background:
- Renal cortex echogenicity is a key ultrasonographic parameter.
- Echogenicity changes with age, but specific pediatric data is limited.
Purpose of the Study:
- To quantify the change in renal cortex echogenicity relative to the liver from neonates to adults.
- To establish a regression model for kidney/liver echogenicity ratio based on age.
Main Methods:
- Utilized ultrasonography in ninety-nine cases to assess kidney and liver echogenicity.
- Calculated the kidney/liver echogenicity ratio for each subject.
- Performed regression analysis to model the ratio against age.
Main Results:
- The mean kidney/liver echogenicity ratio in neonates was 0.96 ± 0.10.
- This ratio decreased with maturation, reaching approximately 0.66 ± 0.05 in adults.
- A regression equation (Y = 0.9309 - 0.1201X) was derived for ages under two years.
Conclusions:
- Renal cortex echogenicity relative to the liver decreases significantly during early childhood.
- Ultrasonography can effectively track these maturation-related echogenicity changes.
- The established regression model provides a quantitative tool for assessing renal maturation in young children.