حيدر قاسم حمود
Authors :
ABSTRACT : The purpose of this study was to review the uses of MR imaging in assessing IHD, including determine role of MR imaging in detection various aspect of myocardial infarction after late gadolinium enhancement, to evaluation of extent and size of fibrosis or scar after enhancement of late gadolinium and to assessment of myocardial viability prior to revascularization. Fifty patients were used in this study. Where the patients referred to Al-Furat Al-Awsat Teaching Hospital in al Najaf governorate in Iraq to receive cardiac magnetic resonance imaging examination for radiological diagnosis and preoperative and postoperative evaluation over nine months period (from 7th of January month 2020 to 15th of September 2020). Age ranged between 31 & 75 years (mean 57.7). Of the 50 cases, 35 were males (70%) and 15 were females (30%). The data was collected by data sheet, which include all variables such as patient age, gender duration of symptoms in addition to other complains to satisfy the study. Numbers of the patients were 50. All patients were diagnosed with ischemic heart disease. Distribution of studied sample according to age, gender, risk factors, number of diseased vessels, effected segment, percentage of scar transmurality, effected artery and viability status. Study patients age was ranging from 31 – 75 years where the mean was 57.76 years with a standard deviation (SD) of ± 11.7 years. The patient’s age between 54-64 years (38%) was the highest proportion. According to the gender, proportion of males was much greater than females (70% for males while 30% for female). While, Late gadolinium enhancement (Percentage of scar transmurality and segments) maximum rate was 34% of study patients showed > 75% enhancement. According to segment highest value was 34% of patients for antero-septal segment enhancement. In this study, the most common effected artery was Left anterior descending artery (LAD) was 64. In this study 46% viable tissue, while 54% non-viable. In conclusion, in measuring scar size, delayed-enhancement MR imaging is highly accurate and can detect the existence, position and level of myocardial scar. And the ability to test myocardial viability via a variety of various approaches and techniques. In addition to assessing cellular viability, these techniques may determine metabolic, functional, and morphological changes and characteristics of tissue. Key words : Cardiac magnetic resonance imaging, ischemic heart disease, myocardial infarction, myocardial viability

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