Franca Wagner

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OBJECTIVE In susceptibility-weighted imaging (SWI) in the normal brain, cortical veins appear hypointense due to paramagnetic properties of deoxy-hemoglobin. Global cerebral anoxia decreases cerebral oxygen metabolism, thereby increasing oxy-hemoglobin levels in cerebral veins. We hypothesized that a lower cerebral oxygen extraction fraction in comatose(More)
A 36-year-old woman with unremarkable medical history was referred to our emergency department in November, 2012, with a 10-day history of right-sided pulsating neck pain radiating into the shoulder. The pain started spontaneously and did not respond to analgesics. 4 days after the onset of pain, the patient had numbness on her right side, extending from(More)
OBJECTIVE Cochlear implants (CIs) are standard treatment for postlingually deafened individuals and prelingually deafened children. This human cadaver study evaluated diagnostic usefulness, image quality and artifacts in 1.5T and 3T magnetic resonance (MR) brain scans after CI with a removable magnet. METHODS Three criteria (diagnostic usefulness, image(More)
OBJECTIVES Metal artefacts present challenges to both radiologists and clinicians during post-operative imaging. Such artefacts reduce the diagnostic effectiveness of CT scans and mask findings that could be vital for patient management. Thus, a powerful artefact reduction tool is necessary when imaging patients with metal implants. Our aim was to test the(More)
INTRODUCTION We report the first findings of functional magnetic resonance imaging of the auditory cortex in a young woman with a bilateral cochleovestibular deficit as first manifestation of Brown-Vialetto-Van Leare syndrome. The patient had no open speech discrimination, even with hearing aids, and is depending on lip reading for communication. METHODS(More)
OBJECTIVE To evaluate signal intensity of the inner ear using 3D-CISS imaging and correlated signal characteristics in patients with vestibular schwannoma to neuro-otological symptoms. METHODS Sixty patients with unilateral vestibular schwannoma were retrospectively reviewed. All patients had had initial and follow-up magnetic resonance imaging (MRI).(More)
ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland. Department ofOtorhinolaryngology, Head andNeck Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. Institute for Surgical Technologies and Biomechanics, University of Bern, Bern, Switzerland. Department Neurology, Inselspital, Bern(More)
Heterogeneity is a key feature of malignancy associated with adverse tumor biology. Texture analysis with different imaging modalities has been shown to reflect tumor heterogeneity. The current study analyzed and compared pre-treatment (contrast-enhanced) ceCT and positron emission tomography/computed tomography (PET/CT) tumor heterogeneity using the(More)
PURPOSE Postoperative radiographic examinations are the gold standard in maxillofacial surgery, except in orbital reconstruction. Therefore, the purpose of this study was to estimate the frequency of implant malposition and revision operation after orbital repair. MATERIALS AND METHODS This retrospective cohort study was conducted in a level I trauma(More)