A photo of Robert Fleck.

Radiologist, Department of Radiology and Medical Imaging

Associate Professor, UC Department of Radiology



Board Certified

My Biography & Research


Dr. Fleck did his radiology training while in the Navy. He served his final two years in the Navy as the pediatric radiologist at Naval Medical Center San Diego with additional duty as radiology department head on the hospital ship MERCY. Dr. Fleck came to Cincinnati Children’s Hospital Medical Center in November of 2003 to be a general pediatric radiologist and to develop the cardiac magnetic resonance imaging program. Dr. Fleck is currently the section chief for cardiac imaging and continues clinical cardiac imaging and research.

Much of Dr. Fleck’s research focuses on the cardiopulmonary system with NIH grant support to investigate the use of MRI in evaluating cystic fibrosis and a second grant to use MRI data to create a model of airway collapse in sleep apnea.

Academic Affiliation

Associate Professor, UC Department of Radiology


Radiology, Radiology

My Education

MD: University of Minnesota, Minneapolis, MN, 1991.

Residency: Naval Medical Center, San Diego, CA, 1998.

Fellowship: Children's Children's Hospital Medical Center, Cincinnati, OH, 2001.

Certification: American Board of Radiology, 1998; Pediatric Radiology, 2002, 2012.

My Publications

Selected Publication

Cardiac magnetic resonance imaging evaluation of neonatal bronchopulmonary dysplasia-associated pulmonary hypertension. Critser, PJ; Higano, NS; Tkach, JA; Olson, ES; Spielberg, DR; Kingma, PS; Fleck, RJ; Lang, SM; Moore, RA; Taylor, MD; et al. American Journal of Respiratory and Critical Care Medicine. 2020; 201:73-82.

mDixon ECG-gated 3-dimensional cardiovascular magnetic resonance angiography in patients with congenital cardiovascular disease. Kourtidou, S; Jones, MR; Moore, RA; Tretter, JT; Ollberding, NJ; Crotty, EJ; Rattan, MS; Fleck, RJ; Taylor, MD. Journal of Cardiovascular Magnetic Resonance. 2019; 21.

The Value of Dynamic Voice CT Scan for Complex Airway Patients Undergoing Voice Surgery. Bergeron, M; Fleck, RJ; Zacharias, SR C; Tabangin, ME; de Alarcon, A. Annals of Otology, Rhinology and Laryngology. 2019; 128:885-893.

Assessing the relationship between movement and airflow in the upper airway using computational fluid dynamics with motion determined from magnetic resonance imaging. Bates, AJ; Schuh, A; Amine-Eddine, G; McConnell, K; Loew, W; Fleck, RJ; Woods, JC; Dumoulin, CL; Amin, RS. Clinical Biomechanics. 2019; 66:88-96.

Non-contrast three-dimensional gradient recalled echo Dixon-based magnetic resonance angiography/venography in children. Dillman, JR; Trout, AT; Merrow, AC; Moore, RA; Rattan, MS; Crotty, EJ; Fleck, RJ; Yoneyama, M; Wang, H; Tkach, JA. Pediatric Radiology: roentgenology, nuclear medicine, ultrasonics, CT, MRI. 2019; 49:407-414.

A novel method to generate dynamic boundary conditions for airway CFD by mapping upper airway movement with non-rigid registration of dynamic and static MRI. Bates, AJ; Schuh, A; McConnell, K; Williams, BM; Lanier, JM; Willmering, MM; Woods, JC; Fleck, RJ; Dumoulin, CL; Amin, RS. International Journal for Numerical Methods in Biomedical Engineering. 2018; 34:e3144-e3144.

Using T1 mapping in cardiovascular magnetic resonance to assess congestive hepatopathy. Kazour, I; Serai, SD; Xanthakos, SA; Fleck, RJ. Abdominal Radiology. 2018; 43:2679-2685.

Preliminary Assessment of Dynamic Voice CT in Post-Airway Reconstruction Patients. Bergeron, M; Fleck, RJ; Middlebrook, C; Zacharias, S; Tolson, S; Oren, L; Smith, D; de Alarcon, A. Otolaryngology - Head and Neck Surgery. 2018; 159:516-521.

Magnetic resonance imaging of obstructive sleep apnea in children. Fleck, RJ; Shott, SR; Mahmoud, M; Ishman, SL; Amin, RS; Donnelly, LF. Pediatric Radiology: roentgenology, nuclear medicine, ultrasonics, CT, MRI. 2018; 48:1223-1233.

Reference Values for Central Airway Dimensions on CT Images of Children and Adolescents. Kuo, W; Ciet, P; Andrinopoulou, E; Chen, Y; Pullens, B; Garcia-Pena, P; Fleck, RJ; Paoletti, M; McCartin, M; Vermeulen, F; et al. American Journal of Roentgenology. 2018; 210:423-430.