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Search Results: 1 - 10 of 18532 matches for " Alberto Biggi "
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Correlation between delayed-enhancement magnetic resonance and nitrate myocardial Tc-99m tetrofosmin scintigraphy in myocardial infarction: a case report
Mauro Feola, Gian Rosso, Alberto Biggi, Stephane Chauvie, Giovanni Leonardi, Franca Margaria, Maurizio Grosso, Valeria Ferrero
Journal of Medical Case Reports , 2007, DOI: 10.1186/1752-1947-1-120
Abstract: We describe a case of a 71-year-old man admitted for ischemic-like chest pain in which DE-MRI and post-nitrate 99mTc-tetrofosmin myocardial scintigraphy equally contributed to the diagnosis of previous lateral myocardial infarction.In this patient with coronary artery disease, the absence of uptake of tracer at myocardial scintigraphy appeared to be closely correlated to DE-MRI data. Cardiologists can use SPECT or DE-MRI to obtain similar information about myocardial viability.Delayed-enhancement magnetic resonance imaging (DE-MRI) is a highly accurate method for the non-invasive estimation of infarct size and location in acute or chronic myocardial infarction [1-3]. Cardiac MRI can also be used to detect the chronic consequence of myocardial infarction using its high degree of image definition [4]. It has recently been proposed as an alternative tool for the assessment of myocardial necrosis. Diagnostic methods for assessing myocardial viability, such as positron-emission tomography, single-photon-emission computed tomography (SPECT) and dobutamine echocardiography all have demonstrated limits in identifying the transmural extension of necrosis and/or viability of the ventricular wall [5-7].Previous studies [1,8,9] have documented the comparable efficacy of myocardial SPECT (using either thallium 201 or 99mTc-tetrofosmin) and DE-MRI in the evaluation of the presence, location, and transmural extension of myocardial necrosis. Furthermore, DE-MRI is a diagnostic method that is characterized by superior spatial resolution and the absence of ionizing radiation.In this case report we describe the case of a man with a previous lateral myocardial infarction, in which MRI showed a DE in the lateral wall according to the result of post-nitrate 99mTc-tetrofosmin imaging.A 71-year-old man was admitted for ischemic-like chest pain occurring 10 days prior to the hospital admission. The ECG showed ST-T segment elevation without a q wave in the infero-lateral leads (figure 1) tha
Autologous chondrocyte implantation for focal cartilage defects in athletes: histology and second-look arthroscopy
A. Scorrano,F. Biggi,G. Turi
Journal of Orthopaedics and Traumatology , 2004, DOI: 10.1007/PL00021718
Abstract: Macroscopic and histologic evaluations showed repair tissue with the characteristics of normal cartilage.
Periprosthetic fractures of the femur: the stability of the implant dictates the type of treatment
Francesco Biggi,Stefano Di Fabio,Corrado D’Antimo,Silvia Trevisani
Journal of Orthopaedics and Traumatology , 2010, DOI: 10.1007/s10195-010-0085-z
DEXA evaluation of total hip arthroplasty with neck-preserving technique: 4-year follow-up
F. Biggi,F. Franchin,R. Lovato,F. Pipino
Journal of Orthopaedics and Traumatology , 2004, DOI: 10.1007/s10195-004-0063-4
Abstract: Periprosthetic bone remodeling, and its evaluation, are the keys of long-term survival of cementless total hip arthroplasty. Dual energy X-ray absorptiometry (DEXA) is the most accurate method to measure bone mineral density, evaluating the effects of bone-prosthesis interactions. We studied, 4 years after implantation, 10 patients who underwent total hip arthroplasty with the CFP prosthetic stem and TOP acetabular cup (Waldemar Link, Hamburg, Germany). Our results demonstrate minimal periprosthetic bone loss compared to that normally observed with conventional stems. A few cases exhibited an increase in BMD. We believe that primary stability, prosthetic design, preservation of natural neck anteversion and off-set, better function related to muscle lever arm, and physiological bone loading with natural stress distribution are the keys of this succesful mini-invasive total hip replacement system.
Planck-LFI: Design and Performance of the 4 Kelvin Reference Load Unit
Luca Valenziano,Francesco Cuttaia,Adriano De Rosa,Luca Terenzi,Alberto Brighenti,GianPaolo Cazzola,Anna Garbesi,Sergio Mariotti,Giordano Orsi,Luca Pagan,Francesco Cavaliere,Roberto Lapini,Matteo Biggi,Enzo Panagin,Battaglia Paola,Chris Butler,Marco Bersanelli,Ocleto D'Arcangelo,Steve Levin,Nazzareno Mandolesi,Aniello Mennella,Gianluca Morgante,Gabriele Morigi,Maura Sandri,Alessandro Simonetto,Maurizio Tomasi,Fabrizio Villa,Marco Frailis,Samuele Galeotta,Anna Gregorio,Rodrigo Leonardi,Stuart Lowe,Michele Maris,Peter Meinhold,Luis Mendes,Luca Stringhetti,Andrea Zonca,Andrea Zacchei
Physics , 2010, DOI: 10.1088/1748-0221/4/12/T12006
Abstract: The LFI radiometers use a pseudo-correlation design where the signal from the sky is continuously compared with a stable reference signal, provided by a cryogenic reference load system. The reference unit is composed by small pyramidal horns, one for each radiometer, 22 in total, facing small absorbing targets, made of a commercial resin ECCOSORB CR (TM), cooled to approximately 4.5 K. Horns and targets are separated by a small gap to allow thermal decoupling. Target and horn design is optimized for each of the LFI bands, centered at 70, 44 and 30 GHz. Pyramidal horns are either machined inside the radiometer 20K module or connected via external electro-formed bended waveguides. The requirement of high stability of the reference signal imposed a careful design for the radiometric and thermal properties of the loads. Materials used for the manufacturing have been characterized for thermal, RF and mechanical properties. We describe in this paper the design and the performance of the reference system.
Italian intersociety consensus statement on antithrombotic prophylaxis in hip and knee replacement and in femoral neck fracture surgery
F. Randelli,F. Biggi,G. Della Rocca,P. Grossi,D. Imberti,R. Landolfi,G. Palareti,D. Prisco
Journal of Orthopaedics and Traumatology , 2011, DOI: 10.1007/s10195-010-0125-8
Abstract: Anticoagulant prophylaxis for preventing venous thromboembolism (VTE) is a worldwide established procedure in hip and knee replacement surgery, as well as in the treatment of femoral neck fractures (FNF). Different guidelines are available in the literature, with quite different recommendations. None of them is a multidisciplinary effort as the one presented. The Italian Society for Studies on Haemostasis and Thrombosis (SISET), the Italian Society of Orthopaedics and Traumatology (SIOT), the association of Orthopaedists and Traumatologists of Italian Hospitals (OTODI), together with the Italian Society of Anesthesia, Analgesia, Resuscitation, and Intensive Care (SIAARTI) have set down easy and quick suggestions for VTE prophylaxis in hip and knee surgery as well as in FNF treatment. This inter-society consensus statement aims at simplifying the grading system reported in the literature, and its goal is to benefit its clinical application. Special focus is given to fragile patients, those with high bleeding risk, and those receiving chronic antiplatelet (APT) and vitamin K antagonists treatment. A special chapter is dedicated to regional anaesthesia and VTE prophylaxis.
II Italian intersociety consensus statement on antithrombotic prophylaxis in orthopaedics and traumatology
F. Randelli,E. Romanini,F. Biggi,G. Danelli,G. Della Rocca,N. R. Laurora,D. Imberti,G. Palareti,D. Prisco
Journal of Orthopaedics and Traumatology , 2013, DOI: 10.1007/s10195-012-0214-y
Abstract: Pharmacological prophylaxis for preventing venous thromboembolism (VTE) is a worldwide established procedure in hip and knee replacement surgery, as well as in the treatment of femoral neck fractures, but few data exist in other fields of orthopaedics and traumatology. Thus, no guidelines or recommendations are available in the literature except for a limited number of weak statements about knee arthroscopy and lower limb fractures. In any case, none of them are a multidisciplinary effort as the one here presented. The Italian Society for Studies on Haemostasis and Thrombosis (SISET), the Italian Society of Orthopaedics and Traumatology (SIOT), the Association of Orthopaedic Traumatology of Italian Hospitals (OTODI), together with the Italian Society of Anesthesia, Analgesia, Resuscitation and Intensive Care (SIAARTI) and the Italian Society of General Medicine (SIMG) have set down easy and quick suggestions for VTE prophylaxis in a number of surgical conditions for which only scarce evidence is available. This inter-society consensus statement aims at simplifying the approach to VTE prophylaxis in the single patient with the goal to improve its clinical application.
Landfill Liner Failure: an Open Question for Landfill Risk Analysis  [PDF]
Alberto Pivato
Journal of Environmental Protection (JEP) , 2011, DOI: 10.4236/jep.2011.23032
Abstract: The European Union Landfill regulations (1999/31/EC) are based on the premise that technological barrier systems can fully contain all landfill leachate produced during waste degradation, and thus provide complete protection to groundwater. The long-term durability of containment systems are to date unproven as landfill liner systems have only been used for about 30 years. Many recent studies have drawn attention to some of the deficiencies associated with artificial lining systems, particularly synthetic membrane systems. Consequently, failure modes of landfill liners need to be quantified and analysed. A probabilistic approach, which is usually performed for complex technological systems such as nuclear reactors, chemical plants and spacecrafts, can be applied usefully to the evaluation of landfill liner integrity and to clarify the failure issue (reliability) of liners currently applied. This approach can be suitably included into risk analysis to manage the landfill aftercare period.
Some Numerical Curiosities about the Universe  [PDF]
Alberto Coe
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.611169
Abstract: We try briefly the relationship between numbers and some aspects of physical reality. By means of a simple set of mathematical and physical tools what we wanted to find was dimensionless numbers that could fit with a particular symmetry. In this paper we describe a small sheaf of numerical results.
Sport Coaches Learn to Coach in Hong Kong  [PDF]
Alberto Cruz
Advances in Physical Education (APE) , 2017, DOI: 10.4236/ape.2017.74036
Abstract: Sport coaching is dynamic and complex. Sport coaches must develop a range of skills and knowledge to coach competently. Studies have shown that school sport coaches learn to coach through many different situations. School sport coaches seem to learn to coach through life experiences in various learning situations. To date, few studies have investigated the process by which school sport coaches in Hong Kong learn how to coach. Therefore, the present study examined the learning situations in which school sport coaches learn to coach and the factors that influence their coaching practice, using Moon’s generic view of learning.Twelve sport coaches with a minimum of one year’s experienceof coaching in schools were recruited in this study. Snowball sampling was employed to maximise variation of the sample. Two semistructured interviews were conducted to gather information concerning their sporting experiences, career paths, learning-to-coach processes, and coaching practice in schools. Deductive content analysis was used to organise and categorise the data. The trustworthiness of the study was established using peer debriefing and member checking.Findings indicated that school sport coaches learn to coach through formal coaching education courses and informal learning settings: mentoring and exchanging ideas with other coaches and physical education teachers. Sport coaches also reported that their past sporting and coaching experience helped their coaching practice. Number of participants, school equipment and facilities, and weather were major factors that influence the practice of school sport coaches.The findings of the study have implications for the training of sport coaches with respect to their specific learning needs and knowledge of how to coach in Hong Kong’s school system. Learning strategies should be provided to address different learning situations coaches might encounter and the factors that influence practice to
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