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Cardiovascular Magnetic Resonance Imaging by Anthony H. Aletras PhD (auth.), Raymond Y. Kwong MD, MPH

By Anthony H. Aletras PhD (auth.), Raymond Y. Kwong MD, MPH (eds.)

Cardiovascular Magnetic Resonance Imaging (CMR) is a quickly evolving instrument for cardiovascular prognosis, and is turning into more and more vital in guiding cardiovascular interventions. Cardiovascular Magnetic Resonance Imaging offers a cutting-edge compilation of specialist contributions to the sphere, every one reading basic and pathologic anatomy of the cardiovascular method as assessed by way of magnetic resonance imaging. useful thoughts reminiscent of myocardial perfusion imaging and evaluate of movement speed are emphasised, besides the fascinating parts of artherosclerosis plaque imaging and designated magnetic resonance imaging. This state-of-the-art quantity represents a multi-disciplinary method of the sector, with contributions from specialists in cardiology, radiology, physics, engineering, body structure and biochemistry, and provides new instructions in noninvasive imaging.

Contemporary and complete, Cardiovascular Magnetic Resonance Imaging is an important source for cardiologists and radiologists striving to steer the best way into the way forward for this significant field.

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IMAGE POSITIONING Unlike standard views of the thorax in the axial, sagittal, or coronal planes, cardiac MR images are generally obtained along the long and short axes of the heart. The ability to obtain views in any orientation without the limitations imposed by finding an adequate window for insonation is one of the main strengths of MRI over echocardiography. Similar to echocardiography, views in the left ventricular (LV) short axis, horizontal and vertical long axes, and through the LV outflow tract are typically obtained in a routine cardiac MR study and allow assessment of cardiac chamber morphology and function.

Optimizing spatial resolution in turn often comes at the cost of diminished signal-to-noise ratio (SNR), leading to another tradeoff to be considered. A cardiac MRI examination typically consists of the acquisition a fairly standard set of images with common methods and in common orientations, supplemented with “optional” imaging that is particularly useful for the specific clinical condition in question. Ideally, the examination should be monitored by a physician, who can help choose these optional imaging methods as well as optimize the choice of imaging parameters.

Note how the frequency of the sine becomes higher further away from zero (as expected because of the higher precessional speed caused by the progressively stronger field) and how the amplitude of the sine is modulated by how many disks of magnetization correspond to each row within our object. Because the sinusoidal waveforms from the different locations are separately drawn in Fig. 19A–E, it is easy for us to see the different frequencies generated by the precessing magnetization vectors seen in Fig.

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