Searched for: author%3A%22Akcakaya%2C+Mehmet%22
(1 - 11 of 11)
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Coletti, C. (author), Fotaki, Anastasia (author), Tourais, Joao (author), Zhao, Y. (author), van de Steeg-Henzen, Christal (author), Akçakaya, Mehmet (author), Tao, Q. (author), Prieto, Claudia (author), Weingärtner, S.D. (author)
Purpose: The aim of this study is to develop and optimize an adiabatic (Formula presented.) ((Formula presented.)) mapping method for robust quantification of spin-lock (SL) relaxation in the myocardium at 3T. Methods: Adiabatic SL (aSL) preparations were optimized for resilience against (Formula presented.) and (Formula presented.)...
journal article 2023
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Demirel, Ömer Burak (author), Weingärtner, S.D. (author), Moeller, Steen (author), Akçakaya, Mehmet (author)
The aim of this study is to develop and evaluate a regularized Simultaneous Multi-Slice (SMS) reconstruction method for improved Cardiac Magnetic Resonance Imaging (CMR). The proposed reconstruction method, SMS with COmpOsition of k-space IntErpolations (SMS-COOKIE) combines the advantages of Iterative Self-consistent Parallel Imaging...
journal article 2023
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Demirel, Omer Burak (author), Yaman, Burhaneddin (author), Shenoy, Chetan (author), Moeller, Steen (author), Weingärtner, S.D. (author), Akçakaya, Mehmet (author)
Purpose: To develop a physics-guided deep learning (PG-DL) reconstruction strategy based on a signal intensity informed multi-coil (SIIM) encoding operator for highly-accelerated simultaneous multislice (SMS) myocardial perfusion cardiac MRI (CMR). Methods: First-pass perfusion CMR acquires highly-accelerated images with dynamically varying...
journal article 2022
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Tourais, Joao (author), Demirel, Omer Burak (author), Tao, Q. (author), Pierce, Iain (author), Thornton, George D. (author), Treibel, Thomas A. (author), Akcakaya, Mehmet (author), Weingärtner, S.D. (author)
Ischemic heart disease (IHD) is one of the leading causes of death worldwide. Myocardial infarction (MI) represents a third of all IHD cases, and cardiac magnetic resonance imaging (MRI) is often used to assess its damage to myocardial viability. Late gadolinium enhancement (LGE) is the current gold standard, but the use of gadolinium-based...
conference paper 2022
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Weingärtner, S.D. (author), Demirel, Omer Burak (author), Gama, Francisco. (author), Pierce, Iain (author), Treibel, Thomas A. (author), Schulz-Menger, Jeanette (author), Akcakaya, Mehmet (author)
Late gadolinium enhancement (LGE) with cardiac magnetic resonance (CMR) imaging is the clinical reference for assessment of myocardial scar and focal fibrosis. However, current LGE techniques are confined to imaging of a single cardiac phase, which hampers assessment of scar motility and does not allow cross-comparison between multiple phases....
journal article 2022
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Coletti, C. (author), Tourais, Joao (author), Ploem, T.W. (author), van de Steeg-Henzen, Christal (author), Akcakaya, Mehmet (author), Weingärtner, S.D. (author)
Magnetic Resonance Imaging (MRI) is the clinical gold standard for the assessment of myocardial viability but requires injection of exogenous gadolinium-based contrast agents. Recently, T1ρ-mapping has been proposed as a fully non-invasive alternative for imaging myocardial fibrosis without the need for contrast agent injection. However, its...
conference paper 2022
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Demirel, Omer Burak (author), Yaman, Burhaneddin (author), Moeller, Steen (author), Weingärtner, S.D. (author), Akcakaya, Mehmet (author)
Dynamic contrast enhanced (DCE) MRI acquires a series of images following the administration of a contrast agent, and plays an important clinical role in diagnosing various diseases. DCE MRI typically necessitates rapid imaging to provide sufficient spatio-temporal resolution and coverage. Conventional MRI acceleration techniques exhibit...
conference paper 2022
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Hermann, I. (author), Kellman, Peter (author), Demirel, Omer B. (author), Akçakaya, Mehmet (author), Schad, Lothar R. (author), Weingärtner, S.D. (author)
Purpose: To implement a free-breathing sequence for simultaneous quantification of (Formula presented.), (Formula presented.), and (Formula presented.) for comprehensive tissue characterization of the myocardium in a single scan using a multi-gradient-echo readout with saturation and (Formula presented.) preparation pulses. Methods: In the...
journal article 2021
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Demirel, Omer Burak (author), Weingärtner, S.D. (author), Moeller, Steen (author), Akcakaya, Mehmet (author)
Perfusion cardiac MRI (CMR) is a radiation-free and noninvasive imaging tool which has gained increasing interest for the diagnosis of coronary artery disease. However, resolution and coverage are limited in perfusion CMR due to the necessity of single snap-shot imaging during the first-pass of a contrast agent. Simultaneous multi-slice (SMS)...
conference paper 2020
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Hermann, I. (author), Uhrig, Tanja (author), Chacon-Caldera, Jorge (author), Akcakaya, Mehmet (author), Schad, Lothar R. (author), Weingärtner, S.D. (author)
Measurement of the bloodT1time using conventional myocardialT1mapping methods hasgained clinical significance in the context of extracellular volume (ECV) mapping and synthetichematocrit (Hct). However, its accuracy is potentially compromised by in-flow ofnon-inverted/non-saturated spins and in-flow of spins which are not partially saturated...
journal article 2020
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Zhang, Chi (author), Hosseini, Seyed Amir Hossein (author), Weingärtner, S.D. (author), Uǧurbil, Kâmil (author), Moeller, Steen (author), Akçakaya, Mehmet (author)
Background Robust Artificial-neural-networks for k-space Interpolation (RAKI) is a recently proposed deep-learning-based reconstruction algorithm for parallel imaging. Its main premise is to perform k-space interpolation using convolutional neural networks (CNNs) trained on subject-specific autocalibration signal (ACS) data. Since training is...
journal article 2019
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