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myocardial perfusion imaging : ウィキペディア英語版
myocardial perfusion imaging

Myocardial perfusion scan (also referred to as MPI) is a nuclear medicine procedure that illustrates the function of the heart muscle (myocardium).
It evaluates many heart conditions, such as coronary artery disease (CAD), hypertrophic cardiomyopathy and heart wall motion abnormalities. The function of the myocardium is also evaluated by calculating the left ventricular ejection fraction (LVEF) of the heart. This scan is done in conjunction with a cardiac stress test.
Planar techniques, such as conventional scintigraphy, are rarely used. Rather, SPECT is more common in the US. With multihead SPECT systems, imaging can often be completed in less than 10 minutes. With SPECT, interior and posterior abnormalities and small areas of infarction can be identified, as well as the occluded blood vessels and the mass of infarcted and viable myocardium.〔(Merck manuals > Radionuclide Imaging ) Last full review/revision May 2009 by Michael J. Shea, MD. Content last modified May 2009〕
==Major indications for a myocardial perfusion test==

* Diagnosis of CAD and various cardiac abnormalities.
* Identifying location and degree of CAD in patients with a history of CAD.
* Prognosis of patients who are at risk of having a myocardial or coronary incident (i.e. myocardial infarction, myocardial ischemia, coronary aneurysm, wall motion abnormalities).
*Assessment of viable myocardium in particular coronary artery territory following heart attacks to justify revascularization
* Post intervention revascularization (coronary artery bypass graft, angioplasty) evaluation of heart.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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