Results 21 to 30 of about 1,266,551 (203)

Role of cardiac magnetic resonance T1 mapping in comparison to T2* for cardiac iron overload assessment in transfusion-dependent thalassemia major patients

The Egyptian Journal of Radiology and Nuclear Medicine, 2023
Background Cardiac complications are the leading cause of death in transfusion-dependent thalassemia major (TDT) patients due to increased cardiac iron overload (CIO), so this study’s purpose is to assess the diagnostic utility of cardiac magnetic ...
Heba R. Ibrahim, Ahmed Tohamy Ahmed
doaj   +1 more source

Global, segmental and layer specific analysis of myocardial involvement in Duchenne muscular dystrophy by cardiovascular magnetic resonance native T1 mapping

Journal of Cardiovascular Magnetic Resonance, 2021
Background Progressive cardiomyopathy accounts for almost all mortality among Duchenne muscular dystrophy (DMD) patients.‍ Thus, our aim was to comprehensively characterize myocardial involvement by investigating the heterogeneity of native T1 mapping in
Ke Xu, Hua-yan Xu, Rong Xu, Lin-jun Xie, Zhi-gang Yang, Li Yu, Bin Zhou, Hang Fu, Hui Liu, Xiao-tang Cai, Ying-kun Guo   +10 more
doaj   +1 more source

Accelerated cardiac T1 mapping in four heartbeats with inline MyoMapNet: a deep learning-based T1 estimation approach

Journal of Cardiovascular Magnetic Resonance, 2022
Purpose To develop and evaluate MyoMapNet, a rapid myocardial T1 mapping approach that uses fully connected neural networks (FCNN) to estimate T1 values from four T1-weighted images collected after a single inversion pulse in four heartbeats (Look-Locker,
Rui Guo, Hossam El-Rewaidy, Salah Assana, Xiaoying Cai, Amine Amyar, Kelvin Chow, Xiaoming Bi, Tuyen Yankama, Julia Cirillo, Patrick Pierce, Beth Goddu, Long Ngo, Reza Nezafat   +12 more
doaj   +1 more source

Reference Values of Native T1 at 3T Cardiac Magnetic Resonance—Standardization Considerations between Different Vendors

Diagnostics, 2021
This study aimed at establishing native T1 reference values for a Canon Vantage Galan 3T system and comparing them with previously published values from different vendors.
Liliana Tribuna, Pedro Belo Oliveira, Alba Iruela, João Marques, Paulo Santos, Tiago Teixeira   +5 more
doaj   +1 more source

Blood correction reduces variability and gender differences in native myocardial T1 values at 1.5 T cardiovascular magnetic resonance – a derivation/validation approach

Journal of Cardiovascular Magnetic Resonance, 2017
Background Myocardial native T1 measurements are likely influenced by intramyocardial blood. Since blood T1 is both variable and longer compared to myocardial T1, this will degrade the precision of myocardial T1 measurements.
Jannike Nickander, Magnus Lundin, Goran Abdula, Peder Sörensson, Stefania Rosmini, James C. Moon, Peter Kellman, Andreas Sigfridsson, Martin Ugander   +8 more
doaj   +1 more source

The reliability and feasibility of non-contrast adenosine stress cardiovascular magnetic resonance T1 mapping in patients on haemodialysis

Journal of Cardiovascular Magnetic Resonance, 2020
Background Identifying coronary artery disease (CAD) in patients with end-stage renal disease (ESRD) is challenging. Adenosine stress native T1 mapping with cardiovascular magnetic resonance (CMR) may accurately detect obstructive CAD and microvascular ...
Federica E Poli, Gaurav S Gulsin, Daniel S March, Ahmed MSEK Abdelaty, Kelly S Parke, Joanne V Wormleighton, Gerry P McCann, James O Burton, Matthew PM Graham-Brown   +8 more
doaj   +1 more source

Stress native T1 and native T2 mapping compared to myocardial perfusion reserve in long-term follow-up of severe Covid-19

Scientific Reports, 2023
Severe Covid-19 may cause a cascade of cardiovascular complications beyond viral pneumonia. The severe inflammation may affect the microcirculation which can be assessed by cardiovascular magnetic resonance (CMR) imaging using quantitative perfusion ...
Jannike Nickander, Rebecka Steffen Johansson, Klara Lodin, Anton Wahrby, Daniel Loewenstein, Judith Bruchfeld, Michael Runold, Hui Xue, Peter Kellman, Henrik Engblom   +9 more
doaj   +1 more source

T1 Mapping MOLLI 5(3)3 Acquisition Scheme Yields High Accuracy in 1.5 T Cardiac Magnetic Resonance

Diagnostics, 2022
Objectives: To systematically compare two modified Look-Locker inversion recovery (MOLLI) T1 mapping sequences and their impact on (1) myocardial T1 values native, (2) post-contrast and (3) extracellular volume (ECV).
Patrick Krumm, Petros Martirosian, Alexander Brendel, Jens M. Kübler, Jan M. Brendel, Sebastian Gassenmaier, Arne Estler, Meinrad Gawaz, Konstantin Nikolaou, Simon Greulich   +9 more
doaj   +1 more source

Prognostic significance of non-infarcted myocardium correlated with microvascular impairment evaluated dynamically by native T1 mapping

Insights into Imaging, 2023
Key points Microvascular impairment correlated with native T1 of remote myocardium. Native T1 values of remote myocardium changed dynamically. Native30D T1 and LGE were joint independent predictors of MACE.
Bing-Hua Chen, Dong-Aolei An, Chong-Wen Wu, Ting Yue, Matthew Bautista, Erika Ouchi, Jian-Rong Xu, Jiani Hu, Yan Zhou, Jun Pu, Lian-Ming Wu   +10 more
doaj   +1 more source

The relative contributions of myocardial perfusion, blood volume and extracellular volume to native T1 and native T2 at rest and during adenosine stress in normal physiology

Journal of Cardiovascular Magnetic Resonance, 2019
Background Both ischemic and non-ischemic heart disease can cause disturbances in the myocardial blood volume (MBV), myocardial perfusion and the myocardial extracellular volume fraction (ECV). Recent studies suggest that native myocardial T1 mapping can
Jannike Nickander, Raquel Themudo, Simon Thalén, Andreas Sigfridsson, Hui Xue, Peter Kellman, Martin Ugander   +6 more
doaj   +1 more source