Cardiovascular and interventional radiology
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Cardiovasc Intervent Radiol · Sep 1998
Case ReportsEntrapment of J-tip guidewires by Venatech and stainless-steel Greenfield vena cava filters during central venous catheter placement: percutaneous management in four patients.
We present four patients in whom bedside placement of a central venous catheter was complicated by entrapment of a J-tip guidewire by a previously placed vena cava (VC) filter. Two Venatech filters were fragmented and displaced into the superior VC or brachiocephalic vein during attempted withdrawal of the entrapped wire. Two stainless-steel Greenfield filters remained in place and intact. Fluoroscopically guided extraction of both wires entrapped by Greenfield filters was successfully performed in the angiography suite.
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Cardiovasc Intervent Radiol · Jul 1998
Clinical TrialEmbolization of bronchial arteries of anomalous origin.
To highlight the importance of detecting bronchial arteries of anomalous origin in patients with massive or recurrent hemoptysis. ⋯ In cases of hemorrhage when the cause is not easily identified, or in cases of recurrence in spite of accurate embolization of pathological arteries, the presence of bronchial arteries of anomalous origin should be considered. Embolization is more difficult in these cases and there is an increased risk of complications.
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Cardiovasc Intervent Radiol · May 1998
Transcatheter arterial embolization for malignant osseous and soft tissue sarcomas. II. Clinical results.
To evaluate the clinical effects of transcatheter arterial embolization (TAE) on malignant bone and soft tissue tumors. ⋯ TAE could be an effective treatment for pain control and local control of malignant bone and soft-tissue tumors.
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Cardiovasc Intervent Radiol · May 1998
Comparative StudyDetermination of stent stenosis: an in vivo experimental comparison of intravascular ultrasound and angiography with histology.
To compare intravascular ultrasound (IVUS) and angiography with histology in determining the degree of stent stenosis in an in vivo experiment. ⋯ Under experimental conditions, IVUS was not superior to angiography in determining the degree of stent stenosis in long-segment stenoses of iliac artery stents, when measurements were correlated with histology. Angiography is sufficient for following the patency of iliac artery stents.
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Cardiovasc Intervent Radiol · May 1998
Radiation exposure to interventional radiologists during manual-injection digital subtraction angiography.
We investigated the relationship between the amount of radiation exposure to the operator during table-side manual-injection angiographic procedures including digital subtraction angiography (DSA) and the operator's position, as well as a simple means to decrease radiation exposure. ⋯ Manual-injection DSA is the largest contributor to radiation exposure received by the interventional radiologist, therefore, the use of a power injector is always recommended when performing DSA. When manual-injection DSA is necessary, radiologists should position themselves as far away from the patient as possible.