Alexander Wressnegger

ORCID: 0000-0002-4257-8025
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About
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Research Areas
  • Radiation Dose and Imaging
  • Advanced X-ray and CT Imaging
  • Aortic aneurysm repair treatments
  • Vascular Procedures and Complications
  • Aortic Disease and Treatment Approaches
  • Peripheral Artery Disease Management
  • Spinal Fractures and Fixation Techniques
  • Moyamoya disease diagnosis and treatment
  • Adrenal and Paraganglionic Tumors
  • Electrical and Bioimpedance Tomography
  • Coronary Interventions and Diagnostics
  • Cerebrovascular and Carotid Artery Diseases
  • Pituitary Gland Disorders and Treatments
  • Meningioma and schwannoma management
  • Digital Radiography and Breast Imaging
  • Intracranial Aneurysms: Treatment and Complications
  • Venous Thromboembolism Diagnosis and Management
  • Infectious Aortic and Vascular Conditions

Medical University of Vienna
2015-2022

The aim of this study was to assess the objective and subjective image characteristics monoenergetic images (MEI[+]), using a noise-optimized algorithm at different kiloelectron volts (keV) compared polyenergetic (PEI), in patients with pancreatic ductal adenocarcinoma (PDAC). This retrospective, institutional review board-approved included 45 (18 male, 27 female; mean age 66 years; range, 42–96 years) PDAC who had undergone dual-energy CT (DECT) abdomen for staging. One standard (PEI) five...

10.1007/s00330-019-06116-9 article EN cc-by European Radiology 2019-03-19

To assess a single-phase, dual-energy computed tomography (DECT) with split-bolus technique and reconstruction of virtual non-enhanced images for the detection endoleaks after endovascular aneurysm repair (EVAR). Fifty patients referred routine follow-up post-EVAR CT history at least one examination using our standard biphasic (arterial venous phase) protocol (which was used as reference standard) were included in this prospective trial. An in-patient comparison an analysis previously...

10.1007/s00330-016-4480-6 article EN cc-by European Radiology 2016-07-19

To compare bridging stent graft (BSG) implantation in downward oriented branches branched endovascular aortic repair (bEVAR), using a commercially available steerable sheath from an exclusively femoral access (TFA) with traditional upper extremity (UEA).In retrospective cohort study, 7 patients 19 the TFA received BSG insertion Medtronic Heli FX access, and 10 32 UEA brachial approach. Technical success, total intervention time, fluoroscopy branch cannulation complication rate were...

10.1007/s00270-022-03064-8 article EN cc-by CardioVascular and Interventional Radiology 2022-04-07

Introduction: Temporal bone paragangliomas are rare tumors with high vascularization and usually benign entity. A variety of modalities, including gross total resection, subtotal conventional or stereotactic radiotherapy gamma-knife, embolization, wait-and-scan strategy can be considered. The aim this study was to compare long-term outcomes different primary treatment modalities in temporal paragangliomas. Materials Methods: Patients treated between 1976 2018 at a tertiary referral center...

10.3390/cancers13205083 article EN Cancers 2021-10-11

Self-expanding nitinol stents must be oversized at least by a minimal amount to ensure contact with the vessel wall and prevent migration. Once stent is deployed it exerts continuous force upon vascular wall, termed chronic outward (COF). Animal studies have found an increased neointimal hyperplasia in high oversizing thus COF. Data about correlation between COF humans are currently lacking. The objective of BIOFLEX-COF trial prospectively investigate differences formation intimal 1 2 years...

10.1186/s13063-017-2338-0 article EN cc-by Trials 2017-12-01

Objectives The purpose of this study was to investigate the impact a 150kV spectral filtration chest imaging protocol (Sn150kVp) combined with advanced modeled iterative reconstruction (ADMIRE) on radiation dose and image quality in patients after lung-transplantation. Methods This included 102 who had unenhanced chest-CT examinations available both, second-generation dual-source CT (DSCT) using standard (100kVp, filtered-back-projection) and, third-generation DSCT Sn150kVp ADMIRE....

10.1371/journal.pone.0228376 article EN cc-by PLoS ONE 2020-02-05
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