OBJECTIVES This cross-sectional study aimed to individually and cumulatively compare sensitivity and specificity of the (1) ankle brachial index and (2) pulse volume waveform analysis recorded by the same automated device, with the presence or absence of peripheral arterial disease being verified by ultrasound duplex scan. METHODS Patients (n=205) referred for lower limb arterial assessment u...

BACKGROUND Although duplex ultrasound surveillance of patients after carotid endarterectomy (CEA) is routinely performed, the use of this policy has been questioned. We evaluated the cost-effectiveness of this strategy. METHODS Using a decision-analytic Markov model that depicts the natural history of patients after CEA, we compared a strategy of duplex ultrasound surveillance to a strategy o...

OBJECTIVE To determine cost-effectiveness of surveillance with duplex ultrasound for thromboembolic disease in individuals with acute traumatic spinal cord injury at admission to rehabilitation. DESIGN In this retrospective sequential case series study, individuals with traumatic spinal cord injury admitted to our rehabilitation facility between July 1, 1988, and December 31, 1998, were ident...

Background and Purpose: Data from recent multicenter carotid endarterectomy trials have questioned the validity and reliability of Doppler ultrasound in the assessment of carotid stenosis. Methods: We prospectively analyzed 45 patients undergoing carotid angiography to compare the North American Symptomatic Carotid Endarterectomy Trial (NASCET) and European Carotid Surgery Trial (ECST) methods ...

OBJECTIVE To evaluate transcutaneous duplex ultrasound in the assessment of internal thoracic artery to coronary artery grafts. SETTING Regional cardiothoracic centre. METHODS Prospective duplex ultrasound evaluation of 83 consecutive patients undergoing left internal thoracic artery to coronary artery grafts, together with combined angiographic and duplex ultrasound evaluation of 17 patien...

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...

A detailed protocol for the performance and interpretation of duplex ultrasound evaluation of hemodialysis access is described.

BACKGROUND AND PURPOSE To evaluate the potential of a new dynamic MRA sequence (DynAngio) based on arterial spin labeling for the assessment of intracranial collateral flow. METHODS Twelve patients with unilateral internal carotid artery obstruction were investigated. Different patterns of collateral flow were compared between DynAngio, transcranial color-coded duplex ultrasound, and time-of-...