Edited and Authored by Peter W. Callen, M.D.

An interactive site with Teaching Files (Fetal Congenital Anomalies, Gynecology, Artifacts and Pitfalls, Abstracts and Commentary of the Current Literature, Tables, Charts, Important Links and Bulletin Board

Online Teaching Files

Reference Charts and Tables

Recommended Links


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 Online Teaching Files

Case of the month.
Sonogram of the fetal abdomen in the 2nd trimester.

Online Teaching Files
Membership to our site will provide you with access to the full collection of online teaching files.  Cases and their discussions can be viewed individually from a list sorted by diagnosis. Alternatively, one can view a selection of images as unknowns and click on any of the images to read a full discussion of the entity.

 Reference Charts and Tables

Gestational Sac Size
Gestational Sac Size, HCG & MA
Crown-rump Length
Biparietal Diameter
Head Circumference
Head Circumference (%)
Abdominal Circumference
Abdominal Circumference (%)
Femur Length
Teratogenic Cardiac Malformations
Association of Cardiac Disease with Anomalies
Fetal Long Bone Measurement
Amniotic Fluid Index

Nasal Bone Length

Ear Length

Choroid Plexus Cyst and Echogenic Intracardiac Focus - Recommendations

Cardiac Outflow Tract Abnl.
Thoracic Circumference
4 Chamber View and Malformations
AIUM Guidelines
Risk of Trisomy 18 with Choroid Plexus Cyst
Maternal Age Specific Odds of Fetal Down's Syndrome based on Non-structural Findings
Maternal Age-Specific Risk of Trisomy 18 with Choroid Plexus Cyst
Likelihood Ratios and Risk of Trisomy 21 based on Humeral Length (Bahado-Singh)
Ultrasound Criteria and Likelihood Ratios assigned for Detection of Trisomy 21 (Nyberg)
Likelihood Ratios and Risk of Trisomy 21 based on Nuchal Thickness (Bahado-Singh)

Middle Cerebral Artery - Peak Systolic Velocity (Kurmanavicius)

Middle Cerebral Artery - Peak Systolic Velocity (Mari)

Fetal Microcephaly - Biparietal Diameter (-SD)

 Recommended Links

MedPix - Medical Image Database
St. Georges Hospital, UK - Images
University of California, San Francisco, Department of Radiology
Dr. Woo's Ultrasound Home Page
The Fetus.net - Dr. Phillipe Jeanty

Syndrome Search - National Center for Biotechnology Information
N. Shinozuka, M.D.'s Web Page on Fetal Morphometric Data
UCSF-Fetal Treatment Center
Fetal Echocardiography Images / U Penn
MyMiniFellowhip - An Incredible Teaching Resource from Dr. Roy A. Filly, MD



Purchase Dr. Callen's Textbook

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Now in its 6th Edition, ULTRASONOGRAPHY IN OBSTETRICS AND GYNECOLOGY Get outstanding guidance from the world's most trusted reference on OB/GYN ultrasound. Now brought to you by lead editor Dr. Mary Norton, Callenís Ultrasonography in Obstetrics and Gynecology has been completely and exhaustively updated by a team of obstetric, gynecologic, and radiology experts to reflect the most recent advances in the field. It addresses the shift in today's practice to a collaborative effort among radiologists, perinatologists, and OB/GYNs, with new emphasis placed on genetics and clinical management. This must-have resource covers virtually all aspects of fetal, obstetric and gynecologic ultrasound  from the common to the rare in one essential clinical reference, allowing you to practice with absolute confidence. 1344 pp. 2400 ills (1,050 in full color). 8-1/2 x 11. Hard cover.  ISBN-13: 978-0323328340.



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Peter W. Callen, M.D.
Professor of Radiology, Obstetrics, Gynecology and Reproductive Science
University of California Medical Center, San Francisco, California