Renal length nomogram in Hong Kong Asian children:  sonographic measurement and multivariable approach.
OBJECTIVE
The purpose of our study was to build a multiple renal length nomogram for Hong Kong Asian children based on normal renal ultrasonography.


METHODS
All children below the age of 13 years, who underwent ultrasonography in a local Hospital in Hong Kong from 23 September 2008 to 31 January 2009 due to melamine exposure were identified.


RESULTS
A total of 3031 normal children were identified. Hong Kong Asian children have smaller kidneys as compared with the Western. Age, bodyweight and body height are the significant factors in the multiple nomogram model of renal length. The interaction between body ln(weight) (ln stands for natural logarithm) and age as well as body height and age are also significant in the model.


CONCLUSIONS
Our study provides a practical multiple nomogram of renal length for Hong Kong Asian children.
Luk
Wing Hang
WH
Department of Diagnostic Radiology and Organ Imaging, United Christian Hospital, HKSAR, Kowloon, Hong Kong. lukwinghang@gmail.com
Lo
Adrian Xu Ning
AX
Au-Yeung
Andrea Wai San
AW
Liu
Karen Ka Yee
KK
Woo
Yip Hin
YH
Chiang
Chilene Chi Lin
CC
Lo
Kitty Kit Lin
KK
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006723:Hong Kong; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007668:Kidney / Q000000981:diagnostic imaging* / Q000502:physiology*; D008297:Male; D049451:Nomograms; D012189:Retrospective Studies; D014463:Ultrasonography