Journal of vascular and interventional radiology : JVIR
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J Vasc Interv Radiol · Feb 2007
The natural history of tunneled hemodialysis catheters removed or exchanged: a single-institution experience.
To track the natural history of tunneled hemodialysis catheters requiring removal or exchange at a single institution. ⋯ Approximately one third of tunneled dialysis catheters are removed for infection, one third for other working access, and one third for poor function. Catheters usually remain in the patient for a median of 2 months. Fibrin sheaths associated with hemodialysis catheters are very common. Thrombus formation around the sheath is frequent.
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J Vasc Interv Radiol · Jan 2007
Functional MR imaging assessment of tumor response after 90Y microsphere treatment in patients with unresectable hepatocellular carcinoma.
To assess the utility of functional contrast medium-enhanced and diffusion-weighted magnetic resonance (MR) imaging in the assessment of early (1 month) response of unresectable hepatocellular carcinoma (HCC) to a single treatment with yttrium-90-labeled microspheres. ⋯ Early after treatment with (90)Y microspheres, tumors demonstrated a decrease in enhancement and an increase in ADC, without a statistically significant change in tumor size. These MR findings are useful in the early posttreatment period for assessing treatment response.
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J Vasc Interv Radiol · Jan 2007
Comparative StudyTransarterial versus transhepatic portal vein embolization to induce selective hepatic hypertrophy: a comparative study in swine.
Portal vein embolization (PVE) is used to induce liver hypertrophy for surgical candidates with marginal future liver remnant (FLR) volumes. We compared the feasibility, safety, and effectiveness of a transarterial approach for PVE (TA-PVE) with those of a transhepatic approach for PVE (TH-PVE) in a swine model. ⋯ Transarterial portal vein embolization is feasible, safe, and effective for inducing future liver remnant hypertrophy in swine and may represent an improvement over previously reported transhepatic portal vein embolization methods.
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J Vasc Interv Radiol · Dec 2006
Case ReportsStereotactic technique of catheter placement in the stump of the superior vena cava in children with impaired venous access.
The long-term survival of children with irreversible intestinal failure is often dependent on adequate central venous access for the administration of parenteral nutrition. In children with occlusion of major central thoracic veins, innovative techniques to establish venous access have been described in the literature. The present report describes an innovative stereotactic technique of catheter insertion in children with occluded internal jugular and brachiocephalic veins. The catheter is inserted percutaneously from the neck into the distal patent stump of the superior vena cava communicating with the right atrium.
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J Vasc Interv Radiol · Dec 2006
Analysis of simulated angiographic procedures: part 1--capture and presentation of audio and video recordings.
To assess different methods of recording angiographic simulations and to determine how such recordings might be used for training and research. ⋯ The capture, editing, presentation, and distribution of synchronized multichannel audio and video recordings holds great promise for angiography training and simulation research. To achieve this potential, technical challenges will need to be met, and content will need to be tailored to suit the needs of trainees and researchers.