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

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.

Assessment of liver T1 mapping in fontan patients and its correlation with magnetic resonance elastography-derived liver stiffness. Ramachandran, P; Serai, SD; Veldtman, GR; Lang, SM; Mazur, W; Trout, AT; Dillman, JR; Fleck, RJ; Taylor, MD; Alsaied, T; et al. Abdominal Radiology. 2019; 44:2403-2408.

Structural lung abnormalities on computed tomography correlate with asthma inflammation in bronchoscopic alveolar lavage fluid. Roach, DJ; Ruangnapa, K; Fleck, RJ; Rattan, MS; Hossain, MM; Guilbert, TW; Woods, JC. Journal of Asthma (Informa). 2019; 000:000-000.

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.

Abnormal submaximal cardiopulmonary exercise parameters predict impaired peak exercise performance in sickle cell anemia patients. Powell, AW; Alsaied, T; Niss, O; Fleck, RJ; Malik, P; Quinn, CT; Mays, WA; Taylor, MD; Chin, C. Pediatric Blood and Cancer. 2019; 66.

Endoscopic posterior cricoid reduction: A surgical method to improve posterior glottic diastasis. de Alarcon, A; Zacharias, S; Oren, L; de Luzan, CF; Tabangin, ME; Cohen, AP; Roetting, NJ; Fleck, RJ. The Laryngoscope. 2019; 129:S1-S9.

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.

Quantitative Assessment of Regional Dynamic Airway Collapse in Neonates via Retrospectively Respiratory-Gated H-1 Ultrashort Echo Time MRI. Bates, AJ; Higano, NS; Hysinger, EB; Fleck, RJ; Hahn, AD; Fain, SB; Kingma, PS; Woods, JC. Journal of Magnetic Resonance Imaging. 2019; 49:659-667.

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.

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.