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PURPOSE To compare retrospectively the safety and efficacy of yttrium-90 ((90)Y) radioembolization with the safety and efficacy of chemoembolization in patients with unresectable hepatocellular carcinoma (HCC). MATERIALS AND METHODS Survival and complication rates were evaluated for patients with HCC who underwent chemoembolization or radioembolization at(More)
BACKGROUND The leading cause of failure of a prosthetic arteriovenous hemodialysis-access graft is venous anastomotic stenosis. Balloon angioplasty, the first-line therapy, has a tendency to lead to subsequent recoil and restenosis; however, no other therapies have yet proved to be more effective. This study was designed to compare conventional balloon(More)
PURPOSE To test the effect of temporary caval filtration on pulmonary emboli when a mechanical thrombolytic device is used to treat venous thrombosis and to test the effects of a modified device on caval patency at 30-day follow-up. MATERIALS AND METHODS In a canine model of iliocaval subacute thrombosis, mechanical thrombolysis was performed with use of(More)
PURPOSE To propose a new method to estimate lung mean dose (LMD) using technetium-99m labeled macroaggregated albumin ((99m)Tc-MAA) single photon emission CT (SPECT)/CT for (90)Yttrium radioembolization of liver tumors and to compare the LMD estimated using SPECT/CT with clinical estimates of LMD using planar gamma scintigraphy (PS). METHODS AND MATERIALS(More)
To retrospectively evaluate the role of the Amplatzer Vascular Plug (AVP) in proximal splenic artery embolization (SAE) compared with coils. Forty patients had proximal SAE performed with AVP(s) or coils as the primary embolic agent for splenic artery steal syndrome (n = 23), trauma (n = 5), portal hypertension (n = 5), bleeding due to pancreatic pathology(More)
PURPOSE To determine if the Arrow-Trerotola Percutaneous Thrombolytic Device (PTD) causes damage to normal vein valves. MATERIALS AND METHODS Ten lateral saphenous veins in five dogs were studied with descending venography with use of a wedge balloon catheter positioned above 48 valves (demonstrating 51 valves) before and after five antegrade passes each(More)
PURPOSE To elucidate the factors that contribute to cuff retention during traction removal of tunneled catheters, as well as to determine the risk of complication associated with polyester cuff retention. MATERIALS AND METHODS A total of 428 tunneled, cuffed catheters were removed with traction and local anesthesia. Polyester cuff retention was recorded(More)
OBJECTIVE To present the outcomes of active surveillance (AS) for renal angiomyolipomas (AMLs) and to assess the clinical features predicting delayed intervention of this treatment option. PATIENTS AND METHODS We retrospectively reviewed the outcomes of patients diagnosed with AMLs on computed tomography (CT) who were managed with AS at our institution.(More)
C-arm cone-beam computed tomography (CBCT) is a relatively new imaging technology that uses a conical-shaped radiation beam and a 2-dimensional flat-panel detector to produce 3-dimensional volumetric datasets with excellent spatial resolution. Recently, this technology has been implemented in angiographic units across the country. This imaging modality is(More)
The present study was undertaken to assess the technical feasibility of transfemoral hepatic artery catheterization in rats and to describe the imaging techniques that can be used on tumors in rats. A total of 106 N1-S1 cells were inoculated into the left lobes of 74 rats. In 17, transfemoral angiography was attempted. Tumor volumes for 2 weeks before(More)