There are several imaging options today to see the heart and its function. I will explain how MRI can be used for imaging the heart. Cardiac magnetic resonance imaging (MRI) is a noninvasive test that uses a combination of a large magnet, radiofrequencies and a computer to produce detailed images of a patient's heart as it is beating. An MRI is an effective tool for mapping the overall heart structure of patients and can use these images to search for aneurysms, tears , aorta bulging and damage caused by a heart attack, and other problems . It is derived from and based on the same basic principles as magnetic resonance imaging (MRI) but with optimization for use in the cardiovascular system. These optimizations are principally in the
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Cardiac synchronization: prospective triggering, gating or retrospective triggering is some of the option to help with the artifacts. To acquirer the most accurate image you can use triggering in combination with flow compensation, respiratory triggering or breath hold and regional saturation techniques. There are several things that can assist when having an MRI to produce a better Image. Electrocardiogram (ECG) leads will likely be placed on your chest to help the machine synchronize the image acquisition with the beating of your heart. A respiratory gating belt, a device that helps the computer know how you are breathing at any given time, may be placed around your abdomen. Additionally, a pulse monitor may be placed on your finger. ECG synchronization can be carried out in two ways prospective gating, retrospective gating. Prospective gating is when the R wave triggers MRI acquisitions the cardiac cycle will occur at the same time this is prospective gating. Cardiac synchronization limits the artifacts linked to the motion of the heart and blood flow, meaning you can see different phases of the cardiac cycle. In prospective Gating there is a lapse of time at the end of the diastole so that is missed in the imaging. In Retrospective gating you can get the entire cardiac cycle. Using ECG with each R wave, the phase encoding gradient changes. In retrospective the acquisition is continuous at the same time the ECG recording to reorganize the data during image
Cardiac synchronization: prospective triggering, gating or retrospective triggering is some of the option to help with the artifacts. To acquirer the most accurate image you can use triggering in combination with flow compensation, respiratory triggering or breath hold and regional saturation techniques. There are several things that can assist when having an MRI to produce a better Image. Electrocardiogram (ECG) leads will likely be placed on your chest to help the machine synchronize the image acquisition with the beating of your heart. A respiratory gating belt, a device that helps the computer know how you are breathing at any given time, may be placed around your abdomen. Additionally, a pulse monitor may be placed on your finger. ECG synchronization can be carried out in two ways prospective gating, retrospective gating. Prospective gating is when the R wave triggers MRI acquisitions the cardiac cycle will occur at the same time this is prospective gating. Cardiac synchronization limits the artifacts linked to the motion of the heart and blood flow, meaning you can see different phases of the cardiac cycle. In prospective Gating there is a lapse of time at the end of the diastole so that is missed in the imaging. In Retrospective gating you can get the entire cardiac cycle. Using ECG with each R wave, the phase encoding gradient changes. In retrospective the acquisition is continuous at the same time the ECG recording to reorganize the data during image