Stefan Puchner

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OBJECTIVE The purpose of this study was to compare CT angiography (CTA) and MR angiography (MRA) for the detectability of 75% and 95% stenoses in phantoms using six different stents. MATERIALS AND METHODS Six different stents (Expander, Hemobahn, SelfX, Smart, Symphony, and Wallstent) were inserted into tubes filled with contrast agent (ioversol or(More)
BACKGROUND It is not known whether high-risk plaque, as detected by coronary computed tomography angiography (CTA), permits improved early diagnosis of acute coronary syndromes (ACS) independently to the presence of significant coronary artery disease (CAD) in patients with acute chest pain. OBJECTIVES The primary aim of this study was to determine(More)
PURPOSE To present the 24-month radiological follow-up data for patients with pararenal aortic pathologies treated with chimney and periscope grafts during endovascular repair. METHODS Between January 2008 and December 2011, 124 high-risk patients with complex pararenal aortic pathologies were treated using the chimney technique at 2 European vascular and(More)
OBJECTIVES The hypothesis that endovascular treatment with covered stents has equal risks but higher efficacy than bare-metal stents (BMS) in long femoropopliteal artery disease was tested. BACKGROUND Although endovascular treatment of short superficial femoral artery lesions revealed excellent results, efficacy in long lesions remains unsatisfactory. (More)
PURPOSE To report a meta-analysis of results from endovascular aneurysm repair (EVAR) of inflammatory aortic aneurysms (IAA). METHODS A comprehensive literature review was performed to identify all studies reporting the results of EVAR in patients with IAA. To be included in the analysis, an article had to provide a minimum follow-up of 6 months,(More)
Two medulloblastoma variants were recently added to the WHO classification of CNS tumours. We retrospectively analysed the imaging findings of 37 classic and 27 cases of variant medulloblastomas to identify imaging characteristics that might suggest a particular MB subtype. Sixty-four patients from three institutions were included. Location, tumour margins,(More)
PURPOSE To compare the diagnostic performance (detection, local staging) of multiphasic 64-detector row computed tomography (CT) with that of gadobenate dimeglumine-enhanced 3.0-T magnetic resonance (MR) imaging in patients suspected of having pancreatic cancer. MATERIALS AND METHODS The institutional review board approved this prospective study, and all(More)
The hypothesis that covered stents are superior to bare-metal stents (BMS) in long femoropopliteal artery disease was tested. The one-year results of the VIASTAR trial revealed a patency benefit of covered stents in the treatment-per-protocol (TPP) analysis only. A prospective, randomized, single-blind, multicenter study evaluated 141 patients with(More)
BACKGROUND AND PURPOSE The noninvasive identification of plaque types prone to cause symptomatic disease is of great interest to improve the effectiveness of surgical or interventional management. The purpose of the present prospective pilot study was to evaluate the association between the results of imaging-the novel sonography technique B-flow imaging(More)
By subjecting selected split wafers to a specifically adapted measure-stress-measure (MSM) procedure, we analyze negative bias temperature stress (NBTS) and recovery characteristics of PMOS devices with respect to the impact of hydrogen. We control the hydrogen incorporation within the gate oxide during Back End of Line (BEOL) fabrication by varying the(More)