Myocardial Fat Imaging
نویسندگان
چکیده
The presence of intramyocardial fat may form a substrate for arrhythmias, and fibrofatty infiltration of the myocardium has been shown to be associated with sudden death. Therefore, noninvasive detection could have high prognostic value. Fat-water-separated imaging in the heart by MRI is a sensitive means of detecting intramyocardial fat and characterizing fibrofatty infiltration. It is also useful in characterizing fatty tumors and delineating epicardial and/or pericardial fat. Multi-echo methods for fat and water separation provide a sensitive means of detecting small concentrations of fat with positive contrast and have a number of advantages over conventional chemical-shift fat suppression. Furthermore, fat and water-separated imaging is useful in resolving artifacts that may arise due to the presence of fat. Examples of fat-water-separated imaging of the heart are presented for patients with ischemic and nonischemic cardiomyopathies, as well as general tissue classification.
منابع مشابه
Factors influencing the pattern and intensity of myocardial 18F-FDG uptake in oncologic PET-CT imaging
Introduction:Myocardial 18F-FDG uptake is highly variable in oncologic whole body 18F-FDG PET/CT studies, ranging from quite intense to minimal distribution. Intense or heterogeneous myocardial 18F-FDG uptake is undesirable as it may interfere with the visual or quantitative evaluation of tumoral invasion and metastases in pericardium, myocardiu...
متن کاملCharacterization of myocardial T1-mapping bias caused by intramyocardial fat in inversion recovery and saturation recovery techniques
BACKGROUND Quantitative measurement of T1 in the myocardium may be used to detect both focal and diffuse disease processes such as interstitial fibrosis or edema. A partial volume problem exists when a voxel in the myocardium also contains fat. Partial volume with fat occurs at tissue boundaries or within the myocardium in the case of lipomatous metaplasia of replacement fibrosis, which is comm...
متن کاملMulti-echo IDEAL Cardiac Water-Fat Imaging
Introduction In cardiac magnetic resonance imaging, separation of water and fat signals is important for improved visualization of enhancing myocardium and pericardial disease, as well as direct visualization of fat in pathologies such as arrythmogenic right ventricular cardiomyopathy (ARVC), fatty tumors, and fatty infiltration of chronic myocardial infarctions. Fat can appear similar to slow ...
متن کاملTranslation of Methdology used in Human Myocardial Imaging to a Sheep Model of Acute Myocardial Infarction
Background: Pre-clinical investigation of stem cells for repairing damaged myocardium predominantly used rodents, however large animals have cardiac circulation closely resembling the human heart. The aim of this study was to evaluate whether SPECT/CT myocardial perfusion imaging (MPI) could be used for assessing sheep myocardium following an acute myocardial infarction (MI) and response to int...
متن کاملSerial Myocardial Imaging after a Single Dose of Thallium-201
Although thallium-201 exercise scintigraphy has been established for the detection of myocardial ischemia and viability, little is known regarding the myocardial thallium-201 kinetics during angioplasty. Herein, we report a 77-year old man with angina pectoris, in whom serial myocardial imaging after a single dose of thallium-201 was helpful in identifying not only the culprit lesion and myocar...
متن کاملMyocardial Perfusion SPECT Imaging in Dextrocardia with Situs Inversus: A Case Report
Dextrocardia is a cardiac positional anomaly in which the heart is located in the right hemithorax with its base-to-apex axis directed to the right and caudad. Situs inversus is an autosomal recessive disorder that causes organs in the chest and abdomen to be positioned in a mirror image from their normal position. Dextrocardia may occur in isolation or as part of situs inversus. Similarly, sit...
متن کامل