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    Magnetic Resonance Imaging
    MRI has modest utility in patients with suspected ischemia in the acute setting.

    The principal limitations to this technique are equipment availability and the high level of expertise required of technologists and interpreting physicians. Access to the patient may be more difficult in the magnetic environment if the patient’s stability should deteriorate.

    However, cardiac MRI with delayed post contrast imaging and edema-weighted imaging provides definitive assessment of the size, distribution, and transmural extent of acute or remote myocardial infarction.

    Cine MRI has utility in demonstrating wall-motion abnormalities, which may accompany acute or chronic ischemic heart disease, and first-pass stress contrast-enhanced perfusion cardiac MRI can demonstrate myocardial perfusion abnormalities .

    MRI, like CT, can also identify non cardiac findings of chest pain, such as aortic dissection.

    Cardiac MR has been shown to be cost-effective in the workup of intermediate-risk chest pain patients in the emergency department .

    Although MR coronary angiography has not been established in hospital practice, both angiographic and phase-contrast flow continue to be developed for coronary artery assessment in research centers

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