Paetzel, Christian and Zorger, Niels and Bachthaler, Maike and Hamer, Okka W. and Stehr, Alexander and Feuerbach, Stefan and Lenhart, Markus and Voelk, Markus and Herold, Thomas and Kasprzak, Piotr and Nitz, Wolfgang R. (2005) Magnetic resonance-guided percutaneous angioplasty of femoral and popliteal artery stenoses using real-time imaging and intra-arterial contrast-enhanced magnetic resonance angiography. INVESTIGATIVE RADIOLOGY, 40 (5). pp. 257-262. ISSN 0020-9996, 1536-0210
Full text not available from this repository. (Request a copy)Abstract
Objective: 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. Materials and Methods: 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 road-maps 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 I mL of gadolinium into the balloon. Postinterventional control was performed by intra-arterial MR angiography and catheter angiography. Results: 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. Conclusion: MR-guided balloon dilation of femoral and poplitcal artery stenoses supported by real-time MR imaging and intra-arterial MR angiography is feasible with commercially available materials.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DIGITAL-SUBTRACTION-ANGIOGRAPHY; MR-ANGIOGRAPHY; FEASIBILITY; AGENT; MR-guided; MR angiography; intra-arterial; angioplasty |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Abteilung für Gefäßchirurgie Medicine > Lehrstuhl für Röntgendiagnostik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 May 2021 09:13 |
| Last Modified: | 14 May 2021 09:13 |
| URI: | https://pred.uni-regensburg.de/id/eprint/36178 |
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