BACKGROUND AND PURPOSE Image quality and diagnostic reliability of T2-weighted MR images of the cervical spine are often impaired by several kinds of artifacts, even in cooperative patients. The aim of this study was to evaluate if BLADE sequences might solve these problems in a routine patient collective. MATERIALS AND METHODS TSE and BLADE sequences were compared in 60 patients for T2-weigh...

PURPOSE To investigate effects of metal artifacts on the dose calculation accuracy of three dose calculation algorithms on CT and cone-beam CT images. METHODS A phantom with and without metal objects was scanned using CT simulator and on-board kV CBCT. Conformal 5-field treatment plans with identical physical and dosimetric parameters were created in the Eclipse™ treatment planning system for...

Streaking artifacts on computed tomography (CT) images are caused by high density materials such as hip prosthesis, surgical clips and dental fillings. The artifacts can lead to compromised clinical outcome due to the inability to differentiate tumor volume and the uncertainties in dose calculation. The goals of our study are to evaluate how GE’s smart metal artifact reduction (MAR) algorithm i...

Dealing with complex palaeogeographical histories is a problem of major importance in biogeographical studies. Since the superposition of palaeogeographical events may produce multiple changes in species range distributions, highly complex patterns of animal and plant distributions are to be expected (Nelson & Platnick, 1981; Brown & Gibson, 1983; Myers & Institut de Recherche pour le Développe...

Bergès, L. (Corresponding author, [email protected]) & Avon, C. ([email protected]): Irstea, UR EMAX, 3275 Route de Cézanne, CS 40061, 13182 Aix-en-Provence Cedex 5, FR Chevalier, R. ([email protected]): Irstea, UR EFNO, Domaine des Barres, 45290 Nogent-sur-Vernisson, France Author-produced version of the article published in Applied Vegetation Science, 2013, 16, 3, 470-...

Homogenization of interlocking masonry structures using a generalized differential expansion technique I. Stefanou, J. Sulem and I. Vardoulakis a Department of Applied Mathematics and Physics National Technical University of Athens Zografou Campus, Greece e-mail: [email protected], web page: http://geolab.mechan.ntua.gr/ (Corresponding author) b UR Navier, CERMES, Ecole des Ponts ParisTe...

Purpose To determine if metal artifact reduction can minimize magnetic susceptibility artifacts in the orbits for an eye plaque brachytherapy patient with metallic dental braces. Material and methods A 62-year-old female patient with a choroidal melanoma in the right eye received a 1.5 T magnetic resonance imaging (MRI) simulation for 3D eye plaque brachytherapy planning. The protocol include...

BACKGROUND AND PURPOSE Combination of high-resolution C-arm CT and novel metal artifact reduction software may contribute to the assessment of aneurysms treated with stent-assisted coil embolization. This study aimed to evaluate the efficacy of a novel Metal Artifact Reduction prototype software combined with the currently available high spatial-resolution C-arm CT prototype implementation by u...

introduction: vertical root fracture (vrf) is common in endodontically treated teeth. conventional and digital radiographies have limitations for detection of vrfs. cone-beam computed tomography (cbct) offers greater detection accuracy of vrfs in comparison with conventional radiography. this study compared the effects of metal artifacts on detection of vrfs by using two cbct systems. methods a...

1 INRA, UR 629, Ecologie des Forêts Méditerranéennes, Domaine Saint Paul, Site Agroparc, F-84914 Avignon Cedex 9, France; [email protected] (J.-L.D.); [email protected] (E.R.); [email protected] (V.P.) 2 ONF, Département RDI-Pôle Nancy 11 rue de l’île de Corse 54000 Nancy, France; [email protected] * Correspondence; [email protected]; Tel.: +3...