background: atherosclerosis of the peripheral arteries occurs in 12% of individuals at 65 years of age or older. at least 28% of these patients suffer from coronary heart diseases and 10% of them are afflicted with cerebrovascular diseases. to calculate the agreement between two diagnostic tests for peripheral arterial disease (pad), namely ankle brachial index (abi) and ultrasound duplex scann...

Late complications following endovascular aneurysm repair indicate the need for long-term surveillance. Clinical trials involving endoluminal stent grafts have typically used computed tomography angiography as the main imaging modality for surveillance. However, computed tomography angiography exposes the patient to higher levels of ionizing radiation, nephrotoxic agents, and increased cost com...

Hypokalemia FIGURE 3-16 Comparison of duplex ultrasound with arteriography. A total of 102 consecutive patients with both duplex ultrasound scanning of the renal arteries and renal arteriography were prospectively studied. All patients in this study had difficult-to-control hypertension, unexplained azotemia, or associated peripheral vascular disease, giving them a high pretest likelihood of re...

OBJECTIVE The purpose of this study was to compare duplex ultrasound scanning and computed tomographic (CT) angiography for postoperative imaging and surveillance after endovascular repair of abdominal aortic aneurysm (AAA). METHODS One hundred consecutive patients with AAA underwent endovascular (Medtronic AneuRx, stent graft) aneurysm repair and were imaged with both CT angiography and dupl...

INTRODUCTION Duplex ultrasound facilitates bedside diagnosis and hence timely patient care. Its uptake has been hampered by training and accreditation issues. We have developed an assessment tool for Duplex arterial stenosis measurement for both simulator and patient based training. METHODS A novel assessment tool: duplex ultrasound assessment of technical skills was developed. A modified dup...

BACKGROUND AND PURPOSE Adventitial vasa vasorum and plaque vascularization have been established as predictors of unstable atheromasic lesions in cerebro- and cardiovascular patients. Ultrasound contrast agents provide reliable information on tissue perfusion and microcirculation. We used contrast ultrasound duplex scanning to identify carotid plaque vascularization. METHODS Contrast carotid ...

arotid endarterectomy (CEA) reduces the risk for stroke in selected patients with symptomatic and asymptomatic carotid atherosclerosis. Because of its observed benefit and the prevalence of carotid bifurcation atherosclerosis, CEA is the most commonly performed vascular reconstructive procedure. In general, the benefit of CEA is related to the degree of stenosis, although in two national trials...

An arteriovenous fistula is an abnormal connection between the arterial and venous systems. In the literature, there are well-described ultrasound findings of iatrogenic arteriovenous fistula as a potential complication from percutaneous transarterial or transvenous procedures. The most important sign is direct visualization of the fistula in the place of the access site. It is necessary to loo...

BACKGROUND Non-recurrent inferior laryngeal nerve (NRILN) is usually discovered during thyroid surgery. It is often associated with vascular abnormalities that can be detected with magnetic resonance imaging (MRI) or duplex ultrasound scan. The aim of this study was to compare the diagnostic sensitivity of ultrasonography with MRI to identify the vascular abnormalities associated to NRILN. PA...

Deep venous thrombosis of the lower extremity poses a diagnostic challenge. Clinical signs and symptoms are often misleading, and sensitive and specific tests are essential for diagnosis. The cost, patient discomfort and risk of morbidity associated with contrast venography have led to the development of noninvasive diagnostic techniques such as Doppler ultrasound, impedance plethysmography and...