腎の超音波計測に関する研究 第1報: 乳幼・学童児の腎計測

Abstract

生後1ヵ月より12歳未満までの男児126例, 女児101例(計227例)を5段階に年齢区分し超音波による腎計測を行った.1)腎の長径は加齢とともに発育し, y (mm)=2.987x+55.029, 相関係数0.864, 危険率<0.01, 身長とはy (mm)=0.407x+28.045, 相関係数0.879, 危険率<0.01, 体重とはy (mm)=0.949x+50.904, 相関係数0.878, 危険率<0.01の関係が成立し, 正の相関を認めた.2)腎の厚径と年齢との関係はy (mm)=1.052x+26.261, 相関係数0.719, 危険率<0.01, 身長とはy (mm)=0.139x+17.261, 相関係数0.707, 危険率<0.01, 体重とはy (mm)=0.345x+24.592, 相関係数0.754, 危険率<0.01の関係が成立し, 正の相関を認めた.3)正常腎の超音波計測値には性差, 左右差は認められなかった

Ultrasonography in a sector scanner at real time was performed on the normal kidneys of 126 males and 101 females up to 12 years of age including infants. The growth of the kidneys was well correlated with the age, height and body weight, but the following findings of the kidney length were obtained when the male and female kidneys were measured in a comprehensive manner. 1) y (mm) = 2.987 X age + 55.029 with 0.864 correlation coefficient and less than 1% risk rate showed a positive correlation with the age. 2) y (mm) = 0.407 X height + 28.045 with 0.879 correlation coefficient and less than 1% risk rate showed a positive correlation with the height. 3) y (mm) = 0.949 X body weight + 50.904 with 0.878 correlation coefficient and less than 1% risk rate showed a positive correlation with the body weight. No difference was recognized between both sexes and the right and left kidneys of infants and school students in their kidney length and thickness.