Peter Callen, MD


Dr. Peter Callen specializes in diagnostic ultrasound. His interest is in fetal abnormality detection, and he works closely with the Fetal Treatment Center at the UCSF Benioff Children's Hospital. He is the author and editor of the most widely used textbook in diagnostic obstetric sonography "Ultrasonography in Obstetrics and Gynecology," now in its fourth edition.

Callen completed his undergraduate studies at the University of Illinois. He went on to earn his medical degree from the University of California, San Francisco, where he also completed his residency in radiology and is a professor of radiology, obstetrics, gynecology and reproductive sciences. He is board certified in diagnostic radiology.


Fetal Treatment Center
1855 Fourth St., Second Floor, Room A-2432
San Francisco, CA 94158
Phone: (800) 793-3887
Fax: (415) 502-0660

Hours: Monday to Friday
8 a.m. - 5 p.m.

Academic Title


More about Peter Callen


UCSF 1973


UCSF, Radiology 1977

Selected Research and Publications

  1. Shoo BA, Kangelaris G, Callen PW, Kashani-Sabet M, Leong SP. Detection of occult melanoma by preoperative positron emission tomography-computed tomography and intraoperative ultrasonography. J Cutan Med Surg. 2010 May-Jun; 14(3):130-5.
  2. Filly MR, Callen PW, Yegul NT, Filly RA. The yolk stalk sign: evidence of death in small embryos without heartbeats. J Ultrasound Med. 2010 Feb; 29(2):237-41.
  3. Qayyum A, Chen DM, Breiman RS, Westphalen AC, Yeh BM, Jones KD, Lu Y, Coakley FV, Callen PW. Evaluation of diffuse liver steatosis by ultrasound, computed tomography, and magnetic resonance imaging: which modality is best? Clin Imaging. 2009 Mar-Apr; 33(2):110-5.

Publications are derived from MEDLINE/PubMed and provided by UCSF Profiles, a service of the Clinical & Translational Science Institute (CTSI) at UCSF. Researchers can make corrections and additions to their publications by logging on to UCSF Profiles.