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Research Overview
Dr. Yetisir’s research focuses on the numerical modeling and optimization of electromagnetic fields to assess and improve safety and imaging for fetal MRI. Her research aims to better understand RF safety during fetal/placental MRI, enable more personalized imaging by developing patient-specific safety management tools and explore ways of decreasing tissue heating during MRI to allow faster imaging, reduce fetal motion artifacts and imaging cost, and increase patient comfort. Dr. Yetisir's research interests include modeling realistic fetal motion and radiofrequency (RF) exposure in the safety assessment of fetal MRI, using parallel RF transmission technology to mitigate dielectric shading and increase imaging speed during fetal MRI, comparing fetal and maternal local tissue heating during 3 Tesla and 1.5 Tesla MRI, and developing a novel pregnancy specific thermal simulator.
Research Background
Dr. Yetisir completed her undergraduate studies in the Department of Electrical and Electronics Engineering at Bilkent University, Turkey in 2011. She completed her MSc and PhD in the Department of Electrical Engineering and Computer Science at Massachusetts Institute of Technology in 2014 and 2017. She was the recipient of Merrill Lynch Fellowship at MIT. During her time at MIT, Dr. Yetisir focused on developing methods to effectively and safely use parallel radiofrequency (RF) transmission to mitigate dielectric shading and tissue heating for adult brain MRI at 7T. She joined Fetal Neonatal Neuroimaging and Developmental Science Center at Boston Children’s Hospital as a postdoctoral research fellow in 2017. Since then, Dr. Yetisir has been working on optimizing RF safety, image quality and imaging speed of fetal/placental MRI.
Publications
- Local SAR management strategies to use two-channel RF shimming for fetal MRI at 3?T. Magn Reson Med. 2024 Mar; 91(3):1165-1178. View Abstract
- Parallel transmission 2D RARE imaging at 7T with transmit field inhomogeneity mitigation and local SAR control. Magn Reson Imaging. 2022 11; 93:87-96. View Abstract
- Safety and imaging performance of two-channel RF shimming for fetal MRI at 3T. Magn Reson Med. 2021 11; 86(5):2810-2821. View Abstract
- Individual variation in simulated fetal SAR assessed in multiple body models. Magn Reson Med. 2020 04; 83(4):1418-1428. View Abstract
- Placental MRI: Developing Accurate Quantitative Measures of Oxygenation. Top Magn Reson Imaging. 2019 Oct; 28(5):285-297. View Abstract