Stefano Barbero

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This article reports on our experience treating vertebral fractures with percutaneous vertebroplasty. A clinical and imaging follow-up designed to identify the early (especially pulmonary embolism of bone cement) and late complications of the technique is proposed. On the basis of the current guidelines, 101 patients were selected: 64 osteoporotic and 37(More)
The purpose of this study was to compare exposure of patient and operator to ionising radiation during percutaneous vertebroplasty performed under combined computed tomography (CT) and fluoroscopic guidance or fluoroscopic guidance alone. With the collaboration of our physics department, we measured exposure on ten patients undergoing vertebroplasty with(More)
PURPOSE The aim of this study is to assess the effectiveness and safety of the use of Vasoseal ES collagen plug in heavily anticoagulated patients with high risk of complications at the vascular access site who had undergone vascular radiological intervention. MATERIALS AND METHODS Between January 2002 and March 2003 180 consecutive transfemoral arterial(More)
PURPOSE For many years, poor vascularization of the short rectal stump has been considered the main cause of leakage. The purpose of this study was to evaluate the vascularization of the rectal stump after total mesorectal excision. METHODS We studied the iliac vascularization on 28 volunteers with healthy rectum to have an anatomic basis. Then, we(More)
In this paper we study the action of the Binomial and Invert (interpolated) operators on the set of linear recurrent sequences. We prove that these operators preserve this set, and we determine how they change the characteristic polynomials. We show that these operators, with the aid of two other elementary operators (essentially the left and right shifts),(More)
This study retrospectively analysed the results of biopsies obtained during percutaneous vertebroplasty (PVP) in patients with presumed osteoporotic vertebral compression fractures, with a view to highlighting the importance of coaxial biopsy in determining the aetiology of vertebral fractures and planning subsequent treatment. Between November 2003 and(More)
In this paper we study the action of a generalization of the Binomial interpolated operator on the set of linear recurrent sequences. We find how the zeros of characteristic polynomials are changed and we prove that a subset of these operators form a group, with respect to a well–defined composition law. Furthermore, we study a vast class of linear(More)
This paper shows how the study of colored compositions of integers reveals some unexpected and original connection with the Invert operator. The Invert operator becomes an important tool to solve the problem of directly counting the number of colored compositions for any coloration. The interesting consequences arising from this relationship also give an(More)