نتایج جستجو برای: coronary

تعداد نتایج: 194379  

Journal: :the journal of tehran university heart center 0
james min weill cornell medical college, new york presbyterian hospital, new york, ny, usa. fay lin weill cornell medical college, new york presbyterian hospital, new york, ny, usa. samuel wann wisconsin heart hospital, milwaukee, wi, usa.

cardiovascular disease remains the principal cause of death in the modernized world.   several novel noninvasive imaging techniques have been recently developed to improve diagnosis of cardiac and coronary disease.   of these advances, multidetector computed tomographic (mdct) angiography has evolved most dramatically to transform computed tomography from a single-slice trans-axial modality to ...

Journal: :the journal of tehran university heart center 0
homa kashani department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran. hojjat zeraati department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran. kazem mohammad department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran. hamidreza goodarzynejad tehran heart center, tehran university of medical sciences, tehran, iran. mahmood mahmoudi department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran. saeed sadeghian tehran heart center, tehran university of medical sciences, tehran, iran.

background: investigators frequently encounter continuous outcomes with plenty of values clumped at zero called semi-continuous outcomes. the gensini score, one of the most widely used scoring systems for expressing coronary angiographic results, is of this type. the aim of this study was to apply two statistical approaches based on the categorization and original scale of the gensini score to ...

Journal: :iranian journal of radiology 0
mahmoud beheshti monfared department of cardiovascular surgery, shahid modarres hospital, shahid beheshti university of medical sciences, tehran, iran hamid ghaderi department of cardiovascular surgery, shahid modarres hospital, shahid beheshti university of medical sciences, tehran, iran taraneh faghihi langroudi department of radiology, shahid modarres hospital, shahid beheshti university of medical sciences, tehran, iran seyedeh adeleh mirjafari brain and spinal injury research center (basir), tehran university of medical sciences, tehran, iran; brain and spinal injury research center (basir), imam khomeini hospital complex, keshavarz blvd., tehran, iran. tel: +98-2166581561 mahnoosh foroughi cardiovascular research center, department of cardiovascular surgery, shahid modarres hospital, shahid beheshti university of medical sciences, tehran, iran mohammad forozeshfard departmant of anesthesiology, semnan university of medical sciences, semnan, iran

origination of the right coronary artery (rca) from the left anterior descending (lad) artery is a case of single coronary artery. it is an extremely rare coronary artery abnormality and usually an incidental finding during coronary angiography. a 73-year-old man with a medical history of hypertension arrived with chest pain. medical therapy started for st elevated myocardial ischemia. during h...

Journal: :acta medica iranica 0
younes nozari department of cardiology, tehran heart center, tehran university of medical sciences, tehran, iran. nader jangi oskouei department of cardiology, imam khomeini hospital, tehran university of medical sciences, tehran, iran. zahra khazaeipour research deputy of imam khomeini hospital complex, brain and spinal injury repair research center, tehran university of medical sciences, tehran, iran.

coronary artery disease is one of the most common causes of mortality and morbidity across the world. its treatment includes medical treatment, coronary artery bypass graft (cabg) and percutaneous coronary intervention (pci). the purpose of this study was to investigate the effect of pci on echocardiographic findings of left ventricular (lv) systolic and diastolic function. 115 patients with co...

Percutaneous coronary intervention in the setting of coronary bifurcation lesions is associated with increased risk for complications. The goal of this manuscript is to review the currently available classifications for coronary artery bifurcation lesions with a guide to the use of specific coronary bifurcation techniques based on lesion characteristics

The acute occlusion of a coronary artery without the evidence of myocardial infarction might immediately affect both the diagnosis and treatment of coronary artery disease. We present the case with a sudden occlusion of the left main coronary artery without typical chest pain following an exercise tolerance test and rapid spontaneous reperfusion of the left main coronary artery.

Journal: :the journal of tehran university heart center 0
hosein vakili cardiovascular research center, modarres hospital, shaheed beheshti university of medical sciences, roxana sadeghi cardiovascular research center, modarres hospital, shaheed beheshti university of medical sciences, mohammad reza biranvand cardiovascular research center, modarres hospital, shaheed beheshti university of medical sciences, mohammad hasan namazi cardiovascular research center, modarres hospital, shaheed beheshti university of medical sciences, habibollah saadat cardiovascular research center, modarres hospital, shaheed beheshti university of medical sciences, morteza safi cardiovascular research center, modarres hospital, shaheed beheshti university of medical sciences,

coronary artery perforation is a rare, but potentially serious, complication of percutaneous coronary intervention and is associated with a high incidence of death, q-wave myocardial infarction, and emergency coronary bypass surgery. management is different but requires prompt recognition and treatment. we describe a case of coronary perforation only after guidewire removal and also review the ...

Journal: :journal of medical signals and sensors 0
maryam taghizadeh dehkordi saeed sadri alimohamad doosthoseini

coronary heart disease has been one of the main threats of human health. coronary angiography is taken as the “gold standard” for the assessment of coronary artery disease. but sometimes, the images are difficult to interpret visually because of the crossing and overlapping of the vessels in the angiograms. vessel extraction from x-ray angiograms has been a challenging problem for several years...

Introdution: Ischemic mitral regurgitation (IMR) remains one of the most complex and unresolved aspects of ischemic heart disease that the impact of percutaneous coronary intervention (PCI) on improvement of intensity of ischemic mitral regurgitation is not well clarified. Patients with coronary artery diseases and ischemic mitral regurgitation have a worse prognosis than the patients with coro...

Introduction: Coronary artery anomalies are rare clinical entities reported in 0.6% to 5.6% of diagnostic coronary angiographies. Anomalous origins of coronary arteries from distal segments are rarely reported. Presented herein is a coronary anomaly in which the circumflex artery (CX) originated as a continuation of the posterolateral branch of the right coronary artery (RCA) w...

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