Nina Eriksson Bylund

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BACKGROUND The aim was to study the epidemiology of abdominal aortic aneurysm (AAA) repair in Sweden. METHODS Primary AAA repairs registered in the Swedish Vascular Registry between 1994 and 2005 were studied. Mortality data were obtained from the national population registry, and age- and sex-specific populations for each calendar year from Statistics(More)
OBJECTIVES/HYPOTHESIS To develop a clinical prognostic model to identify Bell's palsy patients with risk for nonrecovery at 12 months. STUDY DESIGN Data from a prospective, randomized, double-blind, placebo-controlled, multicenter study. METHODS There were 829 patients with Bell's palsy randomized in a factorial fashion to treatment with prednisolone or(More)
A method for detecting and reducing reverberation artifacts in ultrasound image sequences is described. A reverberation artifact localization map is produced using local Rf-bandwidth estimation. To reduce the artifacts an ideal 3D (2D + time) Wiener filter function is computed by using the reverberation map to interactively produce an estimate of the noise(More)
The aim of this work is to evaluate the wide range frequency estimation as a tool for segmentation of contrast echocardio-graphic images and improvement of image quality. By this approach not only the fundamental component of the signal spectra is utilized, but also the harmonics. We found that no distinct areas of homogeneous local frequency could be(More)
Radiofrequency (RF) generated thermal brain lesions are widely used in functional neurosurgery. The size, shape and development of the lesions depends on system parameter settings and the electrode configuration. Difficulties in studying the effect of these factors in vivo stimulated us to develop an in vitro system for standardized comparison between(More)
OBJECTIVE To study whether prednisolone reduces sequelae in Bell's palsy. DESIGN Prospective, randomized, double-blind, placebo-controlled, multicenter trial with 12 months of follow-up. SETTING Seventeen referral centers. PATIENTS In all, 829 patients aged 18 to 75 years. INTERVENTIONS Randomization within 72 hours in a factorial fashion to placebo(More)
One of the most common artifacts in ultrasound imaging is reverberations. These are multiple reflection echoes that register as coming from a deeper region than the depth of the interface that are causing them, and result in ghost echoes in the ultrasound image. A method to reduce these unwanted artifacts using a three dimensional (2D + time) Wiener filter(More)
One of the most frequently occuring artifacts in ultrasound imaging is reverberations. These are multiple reflection echoes that result in ghost echoes in the ultrasound image. A method for reducing these unwanted artifacts using a three-dimensional (3D) Wiener filter is presented. The Wiener filter is a global filter and produces an estimate of the(More)
OBJECTIVES To study the development of synkinesis in Bell's palsy. Frequency, severity, gender aspects and predictors were analysed. DESIGN Data from the randomised controlled Scandinavian Bell's palsy trial including 829 patients. MAIN OUTCOME MEASURES Frequency and severity of synkinesis at 12 months were the main outcome measures. Mean Sunnybrook(More)
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