![myocardial perfusion imaging myocardial perfusion imaging](https://img.medscapestatic.com/pi/meds/ckb/39/26839tn.jpg)
There will be no benefit from revascularisation (see myocardial infarction for more details). Cardiac Magnetic Resonance Imaging ( CMR): Vasodilator CMR and vasodilator. In myocardial infarction, there is absent perfusion both when the heart is stressed and at rest (a fixed defect) and the myocytes are not viable. With hibernating myocardium, the myocardium shows decreased perfusion on both stress and resting phase (seen as a fixed defect) but the myocytes are viable and will benefit from revascularisation (see hibernating myocardium for more details). Subsequent myocardial perfusion imaging was performed using single photon emission computed tomography (SPECT) with reconstruction into tomographic orientations, polar display, and gated images following the administration of 3.
![myocardial perfusion imaging myocardial perfusion imaging](https://www.mic.ca/wp-content/uploads/2017/06/cardiac-studies-1.jpg)
These patients will significantly benefit from treatment. Myocardial ischaemia refers to a state in which there is decreased perfusion of the myocardium when stressed (such as during exertion) but normal perfusion during rest (seen as reversible perfusion defect). Stunned myocardium refers to a state in which there is wall dysfunction but the perfusion (resting and stress) is normal (see the main article on stunned myocardium for more details).
![myocardial perfusion imaging myocardial perfusion imaging](https://els-jbs-prod-cdn.jbs.elsevierhealth.com/cms/attachment/1e89bc8d-b334-48c6-84e8-49a4529b9c07/gr1.jpg)
Myocardial perfusion and viability assessment is important for many reasons: