OBJECTIVES To define velocity criteria by ultrasonography for the detection of hemodynamically significant (>60%) renal artery in-stent restenosis (ISR). BACKGROUND The restenosis rate after renal artery stenting ranges between 10% and 20%. While duplex ultrasound criteria have been validated for native renal artery stenosis, there are no uniformly accepted validated criteria for stented rena...

Until recently, arteriography has been the method of choice for diagnosing traumatic aneurysms and for follow-up after transcatheter coil embolization [1-3]. Duplex sonography can now playa complementary role in the diagnosis and followup of these lesions. Serial duplex sonographic examinations provide a noninvasive method of monitoring the cessation of flow within the aneurysms and their resol...

PURPOSE The purpose of this article was to assess a number of hematologic and fibrinolytic assays at the time of diagnosis of deep vein thrombosis (DVT) and at several intervals over a period of 6 months afterward and to correlate these results with the results of serial duplex scanning. METHODS Thirty-five patients (average age 61, range 18 to 82) with acute symptomatic DVT confirmed by dupl...

Duplex ultrasound is an evolving technology that allows the assessment of volumetric blood flow in the carotid and vertebral arteries during a range of interventions along the spectrum of health and chronic disease. Duplex ultrasound can provide high-resolution diameter and velocity information in real-time and is noninvasive with minimal risks or contraindications. However, this ultrasound app...

Noninvasive testing for renovascular disease is required to identify patients who may benefit from revascularization procedures without exposing an unnecessary amount of patients to the risks of catheter angiography. All available methods of diagnosing renal artery stenosis have significant limitations. We compared a new technique, contrast-enhanced magnetic resonance angiography, with an estab...

A 61-year-old lady received a cadaveric renal transplant in March 1996. On the seventh post-operative day, a renal allograft biopsy was performed under ultrasound guidance. The patient developed severe haematuria requiring a 2-U blood transfusion. Duplex scanning demonstrated a pseudoaneurysm (2.532.9 cm) at the upper pole of the kidney (Figure 1). Arteriography demonstrated two pseudoaneurysms...