background: polyethylene composites including boron can be used as an effective neutron shield. our investigation focuses on manufacturing borated polyethylene nano-composite. the purpose of this study is to design a radiation shield for use in both neutron and gamma fields. materials and methods: borated polyethylene shields containing 2%, and 5% weight percentage of boron nano-particles were ...

Multislice CT angiography represents one of the most exciting technological revolutions in cardiac imaging and it has been increasingly used in the diagnosis of coronary artery disease. Rapid improvements in multislice CT scanners over the last decade have allowed this technique to become a potentially effective alternative to invasive coronary angiography in patients with suspected coronary ar...

BACKGROUND Multi-slice computed tomography (MSCT) is a fast-growing technology that permits a non-invasive, yet reliable, assessment of coronary atherosclerosis. We sought to explore the diagnostic accuracy of MSCT angiography in the detection of significant stenosis of the left main coronary artery (LMCA) in a series of patients with an intermediate pre-test likelihood of coronary artery disea...

Abstract Introduction Stanford type A aortic dissection associated with ST–segment elevation myocardial infarction (STEMI) is a rare event high mortality rate. Emergency coronary angiography and antithrombotic therapy expose to greater risk of complications mortality. Case presentation: 57–year–old heavy smoker gentleman no previous medical history was admitted the emergency department due sudd...

Invasive coronary angiography and computed tomography (CT) coronary angiography directly visualise coronary anatomy but do not provide information about the presence of inducible myocardial ischaemia. Due to its excellent negative predictive value CT coronary angiography is a suitable test to exclude significant coronary artery disease. However, given its high rate of false positive results par...

Introduction: Differentiating between ischemic cardiomyopathy (ICM) and idiopathic dilated cardiomyopathy (IDCM) is important as coronary revascularization can improve prognosis in the ischemic subgroup. Due to inherent problems of coronary angiography in patients with depressed ejection fraction (EF) introducing a noninvasive tool to diagnose those who will benefit from angiography seems...

acute myocardial infarction (mi) during pregnancy is rare and mi due to prinzmetal's angina is much rarer. we present a 35-year-old, obese, multigravida, and pre-eclamptic woman, who developed acute anterior wall mi at the 30th week of gestation. on coronary angiography, the second obtuse marginal branch was totally occluded and the right coronary artery (rca) was normal. three days later, she ...

The investigation and treatment of coronary disease impose a significant burden on health service resources. Catheter coronary angiography remains the gold standard for the investigation of suspected coronary disease. Given the invasive nature and high costs of invasive coronary angiography, there is an increased interest in noninvasive methods to image the lumen of the coronary arteries. Recen...