title: Using quantitative ultrasound to estimate renal maturation.
abstract: Change in renal cortex echogenicity relative to the adjacent liver, from neonates to adults, was determined by using ultrasonography in ninety-nine cases. The kidney/liver echogenicity ratio in neonates was 0.96 +/- 0.10, decreasing with maturation to an approximate adult level (0.66 +/- 0.05) by two years of age. The kidney/liver echogenicity ratio (Y) was constructed by regression analysis on the equation Y = 0.9309-0.1201X (X = age in years) for age less than two years.
authors.affiliation: Department of Pediatrics, National Taiwan University Hospital, Taipei, R.O.C.
authors.forename: M H
authors.initials: MH
authors.lastname: Liao
authors.forename: Y K
authors.initials: YK
authors.lastname: Tsau
authors.forename: J M
authors.initials: JM
authors.lastname: Chu
mesh_terms: D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007668:Kidney / Q000000981:diagnostic imaging* / Q000254:growth & development; D014463:Ultrasonography