Magnetic Resonance-Guided Percutaneous Angioplasty of Femoral and Popliteal Artery Stenoses Using Real-Time Imaging and Intra-arterial Contrast-Enhanced Magnetic Resonance Angiography
| Autor: | Christian Paetzel, Maike Bachthaler, Okka W. Hamer, Piotr M. Kasprzak, Markus Lenhart, A. Stehr, Stefan Feuerbach, Wolfgang R. Nitz, Niels Zorger, Markus Völk, T. Herold |
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| Rok vydání: | 2005 |
| Předmět: |
Gadolinium DTPA
Male Interventional therapy medicine.medical_specialty medicine.medical_treatment Contrast Media Arterial Occlusive Diseases Real time imaging Constriction Pathologic Radiology Interventional Magnetic resonance angiography Percutaneous angioplasty Triiodobenzoic Acids medicine.artery Angioplasty Catheterization Peripheral medicine Intra arterial Humans Popliteal Artery Radiology Nuclear Medicine and imaging Aged Aged 80 and over medicine.diagnostic_test business.industry Angiography Digital Subtraction Magnetic resonance imaging General Medicine Middle Aged Image Enhancement Magnetic Resonance Imaging Popliteal artery Femoral Artery Radiographic Image Enhancement Female Radiology business Angioplasty Balloon Magnetic Resonance Angiography |
| Zdroj: | Investigative Radiology. 40:257-262 |
| ISSN: | 0020-9996 |
| DOI: | 10.1097/01.rli.0000159876.09033.2e |
| Popis: | The aim of this study was to demonstrate the possibility of performing magnetic resonance (MR)-guided interventional therapy for femoral and popliteal artery stenoses with commercially available materials supported by MR real-time imaging and intra-arterial MR angiography.A total of 15 patients suffering from symptomatic arterial occlusive disease of the lower limbs with 19 stenoses were included. Interventional intra-arterial digital subtraction angiography was performed before and after angioplasty on each patient as standard of reference. MR images were acquired on a 1.5-T MR scanner. A fast-low-angle shot (FLASH) 3D sequence was applied for a contrast enhanced MR-angiography (ceMRA). A total of 5 mL of diluted gadodiamide was injected via the arterial access. Maximum intensity projections (MIPs) were used as roadmaps and localizers for the interactive positioning of a continuously running 2D-FLASH sequence with a temporal solution of 2 images/second. The lesion was crossed by a balloon-catheter, which was mounted on a guidewire. The visibility was provided by the radiopaque markers on the balloon and was improved by injection of 1 mL of gadolinium into the balloon. Postinterventional control was performed by intra-arterial MR angiography and catheter angiography.Stenoses were localized by intra-arterial MR angiography. The guidewire/balloon combination was visible, and the balloon was placed correctly to cover the entire stenoses. Balloon dilation reduced the degree of stenosis by approximately 57% on average. No complications were observed.MR-guided balloon dilation of femoral and popliteal artery stenoses supported by real-time MR imaging and intra-arterial MR angiography is feasible with commercially available materials. |
| Databáze: | OpenAIRE |
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