title: Renal length nomogram in Hong Kong Asian children:  sonographic measurement and multivariable approach.
abstract: 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.
authors.affiliation: Department of Diagnostic Radiology and Organ Imaging, United Christian Hospital, HKSAR, Kowloon, Hong Kong. lukwinghang@gmail.com
authors.forename: Wing Hang
authors.initials: WH
authors.lastname: Luk
authors.forename: Adrian Xu Ning
authors.initials: AX
authors.lastname: Lo
authors.forename: Andrea Wai San
authors.initials: AW
authors.lastname: Au-Yeung
authors.forename: Karen Ka Yee
authors.initials: KK
authors.lastname: Liu
authors.forename: Yip Hin
authors.initials: YH
authors.lastname: Woo
authors.forename: Chilene Chi Lin
authors.initials: CC
authors.lastname: Chiang
authors.forename: Kitty Kit Lin
authors.initials: KK
authors.lastname: Lo
mesh_terms: 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