Pediatric Normal Measurements


Knowledge of normal anatomy and its variants is critical in diagnostic radiology.  This is particularly true in pediatric radiology, where normal growth and development create a broader spectrum of normal values.  However, normal measurements are not always easily accessible to radiologists in their daily practice.

We believe that web technology is ideal for storing, modifying, updating, and retrieving the measurements that are important in the daily practice of pediatric radiology.  This will allow the information to be accessible to any radiologist with internet access. 

This website will demonstrate a developing database which includes selections of all major organ systems and all imaging modalities.  "Normal measurements in pediatric radiology" is being compiled by pediatric radiologists from several teaching hospitals across North America. This material has previously been published in various journals and books; we have made every attempt to reproduce this information accurately and to cite references.

We realize that many valuable items could have been overlooked.  However, we would like to ask all visitors to inform us of any errors of omission or commission.  We hope that the easy availability of this material will stimulate further investigation to broaden and clarify it.


The initial project was presented as a scientific exhibit at the 1999 annual meeting of the Society for Pediatric Radiology (  The authors of the initial project were Kryss Kojima MD,  Robert Thomas MD, and Phillip Silberberg MD.  The scope of the webpage has been widened.  The newer version was accepted as a scientific exhibit at the International Pediatric Radiology Meeting in Paris, May 2001.

The list of co-authors of the project has also increased, with authorities who have published widely in the literature about pediatric radiology including all the major organ systems and imaging modalities.

The medical illustrations have all been drawn by the late Jose Rodriguez, unless referenced to another work.  Jose also worked as a Spanish interpreter at Doernbecher Children's Hospital and Oregon Health & Science University. 

We appreciate the feedback given to us by N. Thorne Griscom, Andrew Poznanski, and Stuart Royal.

Finally, we would like to thank all those who have been helpful in getting this work into cyberspace: Elizabeth Gray, Jon Hanada, Mary Ann Hanada, and Karl Simon.  




Phillip Silberberg, MD
Kryss Kojima, MD, Radiology Resident1
Robert Thomas, MD, Assistant Professor of Radiology1,2
Phillip Silberberg, MD, Assistant Professor of Radiology and Pediatrics1,2
Jose Rodriguez, Medical Illustrator2*
Tippi Etzel, Web Manager1

1Department of Radiology, Oregon Health & Science University.
2Doernbecher Children's Hospital
*All illustrations, unless referenced to another work.

Disclaimer: Neither OHSU nor any of its agents warrants the accuracy of the information in these tables. Although every effort has been made to ensure accuracy and to ensure site security, of necessity we have relied on others to provide information. We hope that this information will be useful to you but we urge you to exercise your own professional judgement in using the information we have provided. Copyright © 2001