在正常T2的输血依赖β-thalassemia中评估早期机械功能障碍的T1映射和斑点跟踪回声心脏学

Federico Marchini1, Michele Malagù1, Federica Frascaro1

  • 1Cardiology Unit, Azienda Ospedaliero Universitaria di Ferrara, Via Aldo Moro 8, Ferrara 44124, Italy.

概括

在依赖输血的β-thalassemia (TDT) 患者中,正常的铁过载 (T2*>20毫秒),T1映射显示与心脏机制的相关性很弱. 早期心脏功能障碍在T1值下降的患者中并不比较普遍.

相关概念视频

Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation09:05

Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation

Speckle tracking echocardiography is an emerging diagnostic imaging technique for the quantitative assessment of global and regional myocardial performance. Standard view echocardiographic motion images are recorded and deformation parameters are subsequently measured by automated continuous frame-by-frame tracking and motion analysis of speckles within the B-mode images of the...
20.1K
Assessing Intracardiac Vortices with High Frame-Rate Echocardiography-Derived Blood Speckle Imaging in Newborns07:13

Assessing Intracardiac Vortices with High Frame-Rate Echocardiography-Derived Blood Speckle Imaging in Newborns

The present protocol uses echocardiography-derived blood speckle imaging technology to visualize intracardiac hemodynamics in newborns. The clinical utility of this technology is explored, the rotational body of fluid within the left ventricle (known as a vortex) is accessed, and its significance in understanding diastology is...
1.9K
Transthoracic Echocardiography to Assess Post-Resuscitation Left Ventricular Dysfunction After Acute Myocardial Infarction and Cardiac Arrest in Pigs08:19

Transthoracic Echocardiography to Assess Post-Resuscitation Left Ventricular Dysfunction After Acute Myocardial Infarction and Cardiac Arrest in Pigs

Transthoracic echocardiography is the first-line diagnostic test for post-resuscitation left ventricular dysfunction and structural changes in a pig model of cardiac...
3.4K
Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography07:11

Morphological and Functional Assessment of the Right Ventricle Using 3D Echocardiography

Here, we provide a step-by-step acquisition and analysis protocol for the 3D volumetric assessment of the right ventricle, mainly focusing on the practical aspects that maximize the feasibility of this...
3.3K
Magnetic Resonance Derived Myocardial Strain Assessment Using Feature Tracking07:21

Magnetic Resonance Derived Myocardial Strain Assessment Using Feature Tracking

An accurate and practical method to measure parameters like strain in myocardial tissue is of great clinical value, since it has been shown, that strain is a more sensitive and earlier marker for contractile dysfunction than the frequently used parameter EF.
14.8K
In Situ Mapping of the Mechanical Properties of Biofilms by Particle-tracking Microrheology12:58

In Situ Mapping of the Mechanical Properties of Biofilms by Particle-tracking Microrheology

Particle-tracking microrheology investigates the viscoelasticity of materials. Here, the technique is used to determine the viscoelasticity, creep compliance and effective crosslinking roles of different matrix components of a bacterial biofilm. The matrix consists of polymeric substances secreted by the bacteria and its components determine biofilm structure and mechanical...
10.2K