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)
Bony variations in the anterior ethmoids may, if severe, play an important role in the development of chronic sinusitis and present the surgeon with added risks during operation. We have, therefore, analysed 390 preoperative CT examinations of the sinuses performed in the coronary plane with respect to the frequency of bone variations. Concha bullosa,(More)
OBJECTIVE The aim of this retrospective cohort study was to investigate the role of sinus pneumatization and residual ridge resorption in maxillary bone loss in 400 computed tomography (CT) scans. MATERIALS AND METHODS In 200 dentate and 200 edentulous patients, both sinuses were analysed using CT scans. The image analysis sequence consisted of manual(More)
OBJECTIVE The aim of this study was to evaluate the anatomical feasibility of palatal sinus floor augmentation. MATERIAL AND METHODS In 100 men and 100 women, both sinuses were analyzed using computed tomography. The patients were divided into four anatomical groups according to the remaining alveolar bone height: group 1 (0 ≤ × < 4), group 2 (4 ≤ × < 8),(More)
Objectives: Biventricular repair of double outlet right ventricle non-committed ventricular septal defect (DORVncVSD) is usually achieved by a VSD rerouting to the aorta. This technique can be limited by the presence of tricuspid chordae and by the pulmonary artery to tricuspid valve distance. Furthermore, there is an important risk of late subaortic(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)
Major problems associated with the use of a bone lid for osteoplastic surgery of the maxillary sinus, as first described by Lindorf, are the possibility of postoperative dislocation of the bony fragment into the sinus (floating bone), as well as inflammatory resorption or fracture of the very thin removed trap door fragment. We describe a technique that(More)
A 63-year-old man with right hemiparesis was found (on MRI) to have an expansive intramedullary tumorous lesion at the C2-C3 level. After complete neurosurgical tumor resection, the tumor was histologically categorized as an intermediate grade of intramedullary melanocytoma, an uncommon neoplasm. Based on this peculiar case and review of the literature,(More)