1,721,734 research outputs found
Computed Tomography - Clinical Applications
No full textComputed Tomography (CT), and in particular multi-detector-row computed tomography (MDCT), is a powerful non-invasive imaging tool with a number of advantages over the others non- invasive imaging techniques. CT has evolved into an indispensable imaging method in clinical routine. It was the first method to non-invasively acquire images of the inside of the human body that were not biased by superimposition of distinct anatomical structures. The first generation of CT scanners developed in the 1970s and numerous innovations have improved the utility and application field of the CT, such as the introduction of helical systems that allowed the development of the "volumetric CT" concept. In this book we want to explore the applications of CT from medical imaging to other fields like physics, archeology and computer aided diagnosis. Recently interesting technical, anthropomorphic, forensic and archeological as well as paleontological applications of computed tomography have been developed. These applications further strengthen the method as a generic diagnostic tool for non- destructive material testing and three-dimensional visualization beyond its medical use
Effects of animal welfare measures on milk sheep and goat quality and dairy production in Sardinia
Full text linkThis paper will explore how the massive application of animal welfare on the sheep sector in Sardinia has been implemented both from the point of view of the effectiveness and efficiency of the interventions of the EU measure which has made it possible to evaluate the results, both through an analysis of the perception consumers have of the concept of animal welfare on the sheep sector. Wide space has been given to the deepening of the concept of animal welfare is as ethical concept, whether scientific, both as a Community definition. After having extensively analyzed the Community legislation governing the implementation of animal welfare in Europe, have been taken into account the data of the experience gathered in Sardinia by the sheep sector in recent 10 years. Therefore, the present research aims to: (1) highlight the features of this complex and significant policy, which has undergone a few changes over the years; (2) examine the multiple and profound reasons to the source of that policy; (3) see if any ambitious objectives were achieved at the end of the second implementation period in 2015 and (4) identify whether and how the implementation of measures on animal welfare has been instrumental in pushing the livestock industry toward a more modern and rational; (5) try to outline future perspectives from the results achieved. Nevertheless, the current market trends will be examined again to categorize new perspectives in a bi-dimensional reality opportunities and weaknesses to overcome. To describe some prospects in the sixth chapter were analyzed the opinions of stakeholders, to examine in depth the critical remarks on the necessity of the measure and on the advisability of commercial exploitation, and consumers, to analyze in the context of product demand any propensity to purchase products resulting from the respect of animal welfare. Research has shown on an economic basis that the existence of a measure that guarantees public good "welfare of sheep" is still fully justified. Application analytics measure demonstrates the high value and the results achieved through this valuable policy designed and implemented by the region of Sardinia. The future financial situation is the first tough step ahead. The amount and manner of access to financial resources by farmers could drastically change, consider new emergencies facing Europe and the profound change in the global scenario. Whatever the future scenario, the opportunity must be grasped today. On the basis of the new legislation on the CMO, more organizational innovations are possible to improve the Organization of producers and organizing inter-professional and learn to use new tools to plan production and regulate supply, as established in particular for the milk
Digital subtraction angiography for the analysis of supra-aortic vessels: What is its role nowadays?
No full textThe transdisciplinary essence of neuroradiology: An elective affinity and the fil rouge of our profession
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A comparison between NASCET and ECST methods in the study of carotids: evaluation using Multi-Detector-Row CT angiography
No full textPurpose: NASCET and ECST systems to quantify carotid artery stenosis use percent diameter ratios from conventional angiography. With the use of Multi-Detector-Row CT scanners it is possible to easily measure plaque area and residual lumen in order to calculate carotid stenosis degree. Our purpose was to compare NASCET and ECST techniques in the measurement of carotid stenosis degree by using MDCTA. Methods and material: From February 2007 to October 2007, 83 non-consecutive patients (68 males; 15 females) were studied using Multi-Detector-Row CT. Each patient was assessed by two experienced radiologists for stenosis degree by using both NASCET and ECST methods. Statistic analysis was performed to determine the entity of correlation (method of Pearson) between NASCET and ECST. The Cohen kappa test and Bland-Altman analysis were applied to assess the level of inter- and intra-observer agreement. Results: The correlation Pearson coefficient between NASCET and ECST was 0.962 (p < 0.01). Intra-observer agreement in the NASCET evaluation, by using Cohen statistic was 0.844 and 0.825. Intra-observer agreement in the ECST evaluation was 0.871 and 0.836. Inter-observer agreement in the NASCET and ECTS were 0.822 and 0.834, respectively. Agreement analysis by using Bland-Altman plots showed a good intra-\inter-observer agreement for the NASCET and an optimal intra-\inter-observer agreement for the ECST. Conclusions: Results of our study suggest that NASCET and ECST methods show a strength correlation according to quadratic regression. Intra-observer agreement results high for both NASCET and ECS
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