A photo of Jean Tkach.

Jean Tkach, PhD

  • Medical Physicist, Department of Radiology and Medical Imaging
  • Associate Professor, UC Department of Radiology



Jean Tkach, PhD, received her undergraduate and graduate training in biomedical engineering. She is an MRI physicist by training who has been involved in MRI research since 1985.

Dr. Tkach joined the Cincinnati Children's faculty in the Fall of 2010. Throughout her career, the majority of her effort has been dedicated to the development, implementation, optimization and application of novel MRI acquisition techniques to address clinical as well as more fundamental research questions. The majority of these efforts have been dedicated toward neuroimaging. However, she has also been actively involved in research to advance the fields of cardiac, body and musculoskeletal MR imaging. Although most of Dr. Tkach's work has been directed toward human imaging, she also has been actively involved in multiple animal MR imaging studies.

Dr. Tkach’s research currently focuses on the development and implementation of state of the art MRI acquisition techniques optimized for (and to best address the most relevant clinical needs of) the neonate that exploit new technology being developed for this purpose. Most recently, Dr. Tkach received the Caffey Award for the Best Basic Science Research Paper at the 2011 Annual Meeting of the International Society for Pediatric Radiology.

Dr. Tkach is also is a consultant on the Circulatory System Devices Panel of the Medical Devices Advisory Committee, Center for Devices and Radiological Health, Food and Drug Administration (FDA).


Prospective characterization of incident hepatic steatosis in pediatric and adolescent patients after total pancreatectomy with islet autotransplantation. Vieira Alves, VP; Qiu, L; Abu-El-Haija, M; Tellez, S; Vitale, DS; Lin, TK; Tkach, JA; Nathan, JD; Dillman, JR; Trout, AT. Pancreatology. 2022.

Quantitative abdominal magnetic resonance imaging in children-special considerations. Dillman, JR; Tkach, JA; Pedneker, A; Trout, AT. Abdominal Radiology. 2022; 47:3069-3077.

Performance of C-SENSE Accelerated Rapid Liver Shear Stiffness Measurement Using Displacement Wave Polarity-Inversion Motion Encoding: An Evaluation Study. Pednekar, A; Gandhi, D; Wang, H; Tkach, JA; Trout, AT; Dillman, JR. Journal of Magnetic Resonance Imaging. 2022; 56:754-765.

Comparison of Quantitative Liver US and MRI in Patients with Liver Disease. Alves, VP V; Dillman, JR; Tkach, JA; Bennett, PS; Xanthakos, SA; Trout, AT. Radiology. 2022; 304:660-669.

Quantification of Hepatic Steatosis by Ultrasound: Prospective Comparison With MRI Proton Density Fat Fraction as Reference Standard. Dillman, JR; Thapaliya, S; Tkach, JA; Trout, AT. American Journal of Roentgenology. 2022; 1-8.

Changes in bone marrow adipose tissue in transgender and gender non-conforming youth undergoing pubertal suppression: A pilot study. Nasomyont, N; Meisman, AR; Ecklund, K; Vajapeyam, S; Cecil, KM; Tkach, JA; Altaye, M; Corathers, SD; Conard, LA; Kalkwarf, HJ; et al. Journal of Clinical Densitometry. 2022.

Bowel wall MRI T1 relaxation estimates for assessment of intestinal inflammation in pediatric Crohn's disease. Mahalingam, N; Tkach, JA; Denson, LA; Dillman, JR. Abdominal Radiology. 2022; 47:2730-2738.

Velocity-Encoded Phase-Contrast MRI for Measuring Mesenteric Blood Flow in Patients With Newly Diagnosed Small-Bowel Crohn Disease. Ata, NA; Dillman, JR; Gandhi, D; Dudley, JA; Trout, AT; Imbus, R; Towbin, AJ; Denson, LA; Tkach, JA. American Journal of Roentgenology. 2022; 219:132-141.

Editorial for "Quality Control of MR Elastography Using Percent Measurable Liver Volume Estimation ". Trout, AT; Tkach, JA. Journal of Magnetic Resonance Imaging. 2022; 55:1900-1901.

Quantitative cardiopulmonary magnetic resonance imaging in neonatal congenital diaphragmatic hernia. Tkach, JA; Higano, NS; Taylor, MD; Moore, RA; Hossain, M; Huang, G; Spielberg, DR; Fain, SB; Kingma, PS; Woods, JC. Pediatric Radiology. 2022.