Diane M. Twickler, M.D., FACR, is a tenured Professor of Radiology, and Obstetrics and Gynecology at UT Southwestern, and holder of the Dr. Fred Bonte Professorship in Radiology. She serves the Department of Radiology as Vice Chair of Academic Affairs, after several roles in residency education, and Parkland Health and Hospital System as Medical Director of Obstetric and Gynecologic Ultrasound. Her clinical interests include fetal and gynecologic imaging with ultrasound (US) and magnetic resonance (MR), imaging, and imaging of maternal complications of pregnancy.

Being part of the dedicated and hard-working team of UT Southwestern physicians is a source of personal pride and satisfaction.

Dr. Twickler is one of five members of the Strategic Planning Committee for Undergraduate Medical Education, a group tasked with implementing an innovative medical school curriculum at UT Southwestern. She also is a member of the university’s Promotion and Tenure Committee, and serves as the course director for Radiology Grand Rounds.

After receiving her bachelor’s degree in occupational therapy from the University of Illinois at Chicago, Dr. Twickler earned her medical degree from UT Southwestern. She completed her residency training in diagnostic radiology, and received advanced training in body imaging through a fellowship at UT Southwestern.

A longtime interest in women's health

The focus of her research includes fetal MR biometry and associated quantitative assessment of fetal dysmorphology, the role of ultrasound and MR imaging in placentation including myometrial invasion, and imaging of ovarian and uterine diseases.

In addition to authoring more than 100 publications, Dr. Twickler is associate editor of Williams Obstetrics and has written 13 book chapters emphasizing her areas of clinical expertise. She also serves as a reviewer for multiple academic journals, including Radiology, Obstetrics and Gynecology, American Journal of Roentgenology, American Journal of Obstetrics & Gynecology, Journal of Magnetic Resonance Imaging, and the Journal of Ultrasound in Medicine, in addition to serving as a special reviewer for a host of other specialty journals.

Dr. Twickler is an active member of numerous local, state, national and international societies, including medical, radiologic and ultrasound communities. She is a Fellow of the American College of Radiology, and has assumed many roles in the Texas Radiological Society, and is a founding member of the Texas Radiologic Society Foundation.

Personal note

In addition to spending time with her family and friends, Dr. Twickler enjoys traveling, playing recreational tennis and practicing yoga.


Medical School
University of Illinois College of Medicine (1982)
Medical School
UT Southwestern Medical School (1984)
UT Southwestern Medical Center (1985), Internal Medicine
UT Southwestern Medical Center (1989), Diagnostic Radiology
UT Southwestern Medical Center (1990), Ultrasound

Specialty Areas

Research Interest

  • Antenatal diagnosis with ultrasound and MR imaging
  • Imaging of maternal complications of pregnancy
  • Obstetric and gynecologic ultrasound


Featured Publications LegendFeatured Publications

Central Nervous System on Fetal Magnetic Resonance Imaging and Outcomes in Children with Spina Bifida
Tamara T. Chao MD, Jodi S. Dashe MD, Richard C. Adams MD, Amy Keefover-Hicks MSN RN, Donald D. McIntire PhD and Diane M. Twickler MD Obstetrics & Gynecology August 2010 116 (2) 1 323-329
Ultrasound and Assessment of Ovarian Cancer Risk
Diane M. Twickler MD, Elysia Moschos MD American Roentgen Ray Society February 2010 194 322-329
Effects of Magnesium Sulfate on PreTerm Fetal cerebral Blood Flow Using Doppler Analysis
Diane M. Twickler, MD, Donald D. McIntire, PhD, James M Alexander, MD, and Kenneth J. Leveno, MD Obstetrics & Gynecology January 2010 115 (1) 21-25
Determining uterine blood flow in pregnancy with magnetic resonance imaging
Jason A. Pates MD, Mustapha R. Hatab PhD, Donald D. McIntire PhD, F. Gary Cunningham MD, Diane M. Twickler MD Magnetic Resonance Imaging January 2010 28 507-510
The Appendix in Pregnancy: Confirming Historical Observations With a Contemporary Modality
Jason A. Pates MD, Troy C. Avendiano MD, Michael V. Zaretsky MD, Donald D. McIntire PhD, Diane M. Twickler MD Obstetrics & Gynecology October 2009 114 (4) 805-808

Honors & Awards

  • Fellow of the American College of Radiology
    Radiology (2004)
  • Holder of Dr. Fred Bonte Professorship
    Radiology (2000)
  • Golden Apple Award
    Excellence in the Education of Radiology Residents (1996)
  • Distinguished Teaching Award
    Obstetrics & Gynecology Residents (1991)

Professional Associations/Affiliations

  • American Association for Women Radiologists
  • American College of Radiology
  • American Institute of Ultrasound in Medicine
  • American Medical Association
  • American Roentgen Ray Society
  • Association of University Radiologists
  • Chancellor's Council of the University of Texas System
  • Dallas County Medical Society
  • Dallas-Fort Worth Radiological Society
  • International Society of Ultrasound in Obstetrics and Gynecology
  • Radiological Society of North America
  • Texas Medical Association
  • Texas Radiological Society