Purpose: To compare myocardial T1 against T2 and T2* in patients with thalassemia major (TM) for myocardial iron characterization.
Materials And Methods: A total of 106 TM patients (29 ± 10 years; 58 males) were studied on a 1.5 Tesla scanner using dedicated T1, T2*, and T2 relaxometry sequences. A single mid-ventricular short axis slice was acquired within a breath-hold.
Results: In patients with myocardial iron overload (T2* < 20 ms; n = 52), there were linear correlations between T2 and T2* (r = 0.82; P = 0.0), and between T1 and T2* (r = 0.83; P = 0.0). In patients with no myocardial iron (n = 54), T2* values were scattered with no significant correlation against T2 or T1. For all patients (n = 106) there was a strong linear correlation (r = 0.93; P = 0.0) between myocardial T1 and T2.
Conclusion: In patients with iron overload, myocardial T2 and T1 are correlated with T2*. In patients with low or normal myocardial iron concentration, other factors become dominant in affecting T2* values as shown by scattered T2* data. Myocardial T1 correlates linearly with T2 measurements in all patients suggesting that these two relaxation parameters avoid extrinsic magnetic field inhomogeneity effects and may potentially provide improved myocardial tissue characterization.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/jmri.24010 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High Salt Exacerbates Myocardial Dysfunction In Vitro and In Vivo by Promoting SIRT1/Nrf2-Mediated Ferroptosis.
Clin Exp Pharmacol Physiol
February 2025
Department of Nephropathy, Xi'an Central Hospital, Xi'an, China.
Myocardial dysfunction is a crucial determinant of the development of heart failure in salt-sensitive hypertension. Ferroptosis, a programmed iron-dependent cell death, has been increasingly recognised as an important contributor to the pathophysiology of various cardiovascular diseases. This study aims to investigate the role and underlying mechanism of ferroptosis in high-salt (HS)-induced myocardial damage.
View Article and Find Full Text PDFHMOX1-LDHB interaction promotes ferroptosis by inducing mitochondrial dysfunction in foamy macrophages during advanced atherosclerosis.
Dev Cell
December 2024
Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China; Heilongjiang Provincial Key Laboratory of Panvascular Disease, Harbin 150086, China; The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin 150081, China; State Key Laboratory of Frigid Zone Cardiovascular Diseases, Harbin 150080, China. Electronic address:
Advanced atherosclerosis is the pathological basis for acute cardiovascular events, with significant residual risk of recurrent clinical events despite contemporary treatment. The death of foamy macrophages is a main contributor to plaque progression, but the underlying mechanisms remain unclear. Bulk and single-cell RNA sequencing demonstrated that massive iron accumulation in advanced atherosclerosis promoted foamy macrophage ferroptosis, particularly in low expression of triggering receptor expressed on myeloid cells 2 (TREM2) foamy macrophages.
View Article and Find Full Text PDFFerrostatin-1 improves acute sepsis-induced cardiomyopathy via inhibiting neutrophil infiltration through impaired chemokine axis.
Front Cell Dev Biol
December 2024
Institute of Precision Medicine, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
Introduction: Sepsis-induced cardiomyopathy is a common complication of sepsis and is associated with higher mortality. To date, effective diagnostic and management strategies are still lacking. Recent studies suggest that ferroptosis plays a critical role in sepsis-induced cardiomyopathy and ferroptosis inhibitor Ferrostatin-1 (Fer-1) improved cardiac dysfunction and survival in lipopolysaccharide (LPS) induced endotoxemia.
View Article and Find Full Text PDFBudget Impact Analysis of Implementing Patient Blood Management in the Cardiovascular Surgery Department of a Turkish Private Hospital.
Clinicoecon Outcomes Res
December 2024
Demiroğlu Bilim University, Istanbul, Turkey.
Purpose: In cardiovascular surgeries, iron deficiency anemia and transfusion of blood products are associated with mortality and morbidity, prolonged hospital stay and poor patient outcomes. Patient blood management (PBM) is a patient-centered approach based on a 'three pillar' model that promotes optimum use of blood and blood products to improve outcomes. This study assessed the potential budget impact of implementing PBM in patients undergoing elective cardiovascular surgery in a private hospital in Turkey.
View Article and Find Full Text PDFEffect of iron status on myocardial infarction: A two-sample Mendelian randomization study.
Heliyon
December 2024
Department of Geriatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, City Nanjing, China.
Background: In observational studies, connections have been identified between iron status and myocardial infarction (MI). The significance of changes in iron status as either a risk factor or a result of MI remains unclear.
Methods: We obtained our instrumental variables from a meta-analysis of three GWASs in Iceland, the UK, and Denmark, which discovered 62 independent sequence variants across 56 loci linked to blood iron levels, ferritin, total iron binding capacity (TIBC), transferrin saturation (TSAT), and the Genetics of Iron Status (GIS) database for transferrin.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!