Unni Udayasankar, MD

Professor, Medical Imaging - (Clinical Scholar Track)
Vice Chair of Quality and Safety
Program Director, Neuroradiology Fellowship Program
MI Executive Committee Member

I am a board certified pediatric and neuroradiologist with special interest in pediatric neuroradiology. 

Research Interests: 

Pediatric body and neuro MRI techniques Radiation dose reduction techniques in children Pediatric Inflammatory bowel disease

  • MD: Kerala University, T D Medical College, Kerala, India, 1999
Honors and Awards
  • Radiology Teacher of the Year, Imaging Institute, Cleveland Clinic, 2014
  • VSS Medical College, Nizam's Institute of Medical Sciences, Hyderabad, India
  • Children's Healthcare of Atlanta and Emory University, Pediatric Radiology, 2009-2010
  • Emory University School of Medicine, Neuroradiology, 2008-2009
  • Emory University School of Medicine, Abdominal Imaging, 2007-2008
Board Certifications
  • American Board of Radiology Certification in General Radiology, 2010
  • American Board of Radiology, Subspecialty Certification in Neuroradiology, 2012
  • American Board of Radiology, Subspecialty Certification in Pediatric Radiology, 2013

Select Publications


Radhakrishnan, R., L. A. G. Shea, S. Pruthi, V. M. Silvera, T. Bosemani, N. K. Desai, D. L. Gilbert, O. A. Glenn, C. V. Guimaraes, M-L. Ho, et al., "ACR Appropriateness Criteria® Ataxia-Child.", J Am Coll Radiol, vol. 19, issue 11S, pp. S240-S255, 2022 Nov.
Memmott, T., J. Hass Alfonso, U. Udayasankar, and H. Pariury, "Combination therapy for unresectable primitive myxoid mesenchymal tumor of infancy: A story of cure.", Pediatr Blood Cancer, vol. 69, issue 7, pp. e29523, 2022 Jul.
Manjila, S., M. Fana, K. Medani, M. D. Kay, R. Manjila, T. G. Bazil, and U. Udayasankar, "Spinal Epidural Lipomatosis Causing Lumbar Canal Stenosis: A Pictorial Essay on Radiological Grading and the Role of Bariatric Surgery Versus Laminectomy.", Cureus, vol. 14, issue 7, pp. e26492, 2022 Jul. PMCID: PMC9339211 
Rogers, S. N., U. Udayasankar, S. Pruthi, H. A. Lai, N. Kadom, J. Guerin, M. Malinzak, B. L. Shulkin, T. Y. Poussaint, Z. Patay, et al., "Imaging of pediatric spine and spinal cord tumors: A COG Diagnostic Imaging Committee/SPR Oncology Committee/ASPNR White Paper.", Pediatr Blood Cancer, pp. e30150, 2022 Dec 23.
Desoky, S. M., M. George, M. Epelman, D. P. Frush, D. M. Gourlay, M. M. Moore, G. R. Schooler, A. J. Towbin, U. Udayasankar, M. Zukowski, et al., "Imaging of Right Lower Quadrant Pain in Children and Adolescents: Expert Panel Narrative Review.", AJR Am J Roentgenol, 2022 Nov 23.


Sawyer, D. M., R. Mushtaq, S. Vedantham, F. Shareef, S. M. Desoky, H. Arif-Tiwari, D. L. Gilbertson-Dahdal, and U. K. Udayasankar, "Performance of overnight on-call radiology residents in interpreting unenhanced abdominopelvic magnetic resonance imaging studies performed for pediatric right lower quadrant abdominal pain.", Pediatr Radiol, 2021 Mar 10.


Sawyer, D., R. Mushtaq, S. Vedantham, and U. Udayasankar, Performance of overnight on-call radiology residents in interpreting unenhanced adbominopelvic MRI studies performed for pediatric right lower quadrant pain, 2020.
Udayasankar, U., and S. Desoky, "Non-Contrast MRI for Abdominal Pain in the Pediatric Emergency Department—Point: Safe and Comprehensive Assessment While Reducing Delay in Care ", American Journal of Roentgenology, vol. 10.2214/AJR.20.24392, 2020.
Warner, J., S. Desoky, H. Arif Tiwari, F. Morello, D. Gilbertson, and U. Udayasankar, "Unenhanced MRI of the Abdomen and Pelvis in the Comprehensive Evaluation of Acute Atraumatic Abdominal Pain in Children.", AJR Am J Roentgenol, pp. 1-11, 2020 Sep 09.


Mushtaq, R., S. M. Desoky, F. Morello, D. Gilbertson-Dahdal, G. Gopalakrishnan, A. Leetch, S. Vedantham, B. Kalb, D. R. Martin, and U. K. Udayasankar, "First-Line Diagnostic Evaluation with MRI of Children Suspected of Having Acute Appendicitis.", Radiology, vol. 291, issue 1, pp. 170-177, 2019 04.
Mushtaq, R., S. Desoky, F. Morello, D. Gilbertson-Dahdal, S. Vedantham, B. Kalb, D. Martin, and U. Udayasankar, First-Line Diagnostic Evaluation of Children with Suspected Acute Appendicitis using MRI, 2019.
Rogers, S., and U. Udayasankar, "Uncommon Lytic Lesions of the Skull in Children: Imaging findings", Annual Meeting for the Western Neuroradiological Society, 01/2019.


Hershman, M., R. Carmody, and U. K. Udayasankar, "Case 252: Acute Hyperammonemic Encephalopathy Resulting from Late-Onset Ornithine Transcarbamylase Deficiency.", Radiology, vol. 287, issue 1, pp. 353-359, 2018 04.
Desoky, S., RI. Kylat, U. Udayasankar, and D. Gilbertson-Dahdal, Managing Neonatal Intestinal Obstruction: Clinical Perspectives, 2018.
Warhadpande, D., S. Desoky, E. Park, and U. Udayasankar, Imaging of Knee Swelling in Children, 2018.
Warhadpande, D., S. Desoky, E. Park, and U. Udayasankar, "Imaging of Knee Swelling in Children", Contemporary Diagnostic Radiology, vol. 41, issue 1, 01/2018.


Udayasankar, U., "Magnetic resonance imaging of the brain and spine, 5(th) edition.", J Magn Reson Imaging, 2017 Jun 22.


Petkovska, I., E. Duke, D. R. Martin, Z. Irani, C. P. Geffre, J. M. Cragun, J. R. Costello, H. Arif-Tiwari, F. Czeyda-Pommersheim, U. Udayasankar, et al., "MRI of ovarian torsion: Correlation of imaging features with the presence of perifollicular hemorrhage and ovarian viability.", Eur J Radiol, vol. 85, issue 11, pp. 2064-2071, 2016 Nov.


Obusez, E. C., and U. Udayasankar, "Autosomal recessive polycystic kidney disease with Caroli syndrome.", J Urol, vol. 193, issue 2, pp. 679-80, 2015 Feb.