نتایج جستجو برای: myocardial perfusion
تعداد نتایج: 195008 فیلتر نتایج به سال:
Correspondence to: Dr Constantinos Anagnostopoulos, Royal Brompton Hospital, Sydney St, London SW3 6NP, UK; c.anagnostopoulos@ rbh.nthames.nhs.uk . . . . . . . . . . . . . . . . . . . . . . . 1 BACKGROUND Radionuclide myocardial perfusion imaging uses an intravenous radiopharmaceutical to image myocardial perfusion during stimulation of the perfusion system and at rest. The images are acquired ...
INTRODUCTION AND OBJECTIVES After a myocardial infarction, damage to the microcirculation indicates a worse prognosis. We compared the usefulness of the quantitative analysis of myocardial contrast echocardiography with intravenous injection of contrast (MCE-iv) with intracoronary injection (MCE-ic) for analyzing coronary perfusion. PATIENTS AND METHOD We studied 42 patients with a first ST-e...
BACKGROUND Transmyocardial laser revascularization (TMR) has been shown to improve refractory angina not amenable to conventional coronary interventions. However, the mechanism of action remains controversial, because improved myocardial perfusion has not been consistently demonstrated. We hypothesized that TMR relieves angina by causing myocardial sympathetic denervation. METHODS AND RESULTS...
OBJECTIVE The purpose of this study was to examine the relation between the coronary CT angiographic findings of calcified and noncalcified plaque burden and stenosis severity and the myocardial perfusion imaging finding of ischemia. MATERIALS AND METHODS Seventy-two patients (41 men, 31 women; mean age, 56 years) underwent coronary CT angiography and stress-rest SPECT myocardial perfusion im...
Myocardial contrast echocardiography is a new method for evaluating myocardial perfusion. However, it relies on the marriage of two evolving technologies; ultrasound contrast agents and ultrasound imaging instrumentation. To date, these technologies have only been available to a limited number of researchers throughout the world. Within the next 12 months, both agents and specialised ultrasound...
introduction: it seems that demographic and clinical features of patients referred for myocardial perfusion scintigraphy (mps) is different among populations and healthcare settings. the purpose of the current study is to evaluate the clinical features and risk factors of patients referred for myocardial perfusion scintigraphy to a military hospital. methods: as a cross-sectional study, the cli...
conclusions the coronary sinus flow per minute is the most accurate parameter among the three echocardiographic parameters mentioned above for the assessment of significant stenosis of the coronary artery. results flow (ml/minute), flow/lvm (ml/minuteg) and lv (d-s) mass a-l all correlated significantly with the percentage of stenosis (r = -0.64, p < 0.001; r = -0.47, p < 0.001; r = -0.56, p < ...
Coronary artery bypass graft (CABG) surgery is a common treatment for patients with coronary artery disease. A potential complication of CABG is myocardial ischemia or infarction. In this thesis, a method — based on laser Doppler flowmetry (LDF) — for detection of intraand postoperative ischemia by myocardial perfusion monitoring is evaluated. LDF is sensitive to motion artifacts. In previous s...
AIMS We analyzed the usefulness of quantitative intravenous myocardial contrast echocardiography to study microvasculature perfusion after infarction in comparison with intracoronary myocardial contrast echocardiography. METHODS AND RESULTS Thirty-two patients with a first ST elevation myocardial infarction, single-vessel disease and an open artery (TIMI 3) were studied before discharge. Myoc...
OBJECTIVE Segmentation with scatter and photopeak window data using attenuation correction (SSPAC) method can provide a patient-specific non-uniform attenuation coefficient map only by using photopeak and scatter images without X-ray computed tomography (CT). The purpose of this study is to evaluate the performance of attenuation correction (AC) by the SSPAC method on normal myocardial perfusio...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید