1,721,007 research outputs found
Magnetic Resonance Imaging in the staging and restaging of esophageal carcinoma after presurgical radiation and chemotherapy, utilizing spine coil and opacification of the esophageal lumen.
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Retroperitoneal nodular fasciitis: magnetic resonance imaging (MRI) and pathological features
No full textreference to its peculiar radiological and pathological features is described. Only a few cases of pelvic nodular fasciitis are reported in the English literature and at the best of our knowledge, this is the first case of retroperitoneal origin. This report discusses the role of MRI in the characterization of soft tissue masses. No specific MRI findings of nodular fasciitis were identified and MRI doesn't add any contribution to the differential diagnosis between benign and malignant lesions. As a consequence, the histopathological examination is necessary for a definitive diagnosis
Magnetic Resonance Imaging in the staging and restaging of esophageal carcinoma after presurgical radiation and chemotherapy, utilizing spine coil and opacification of the esophageal lumen.
No full textA Lagrangian fluid–structure interaction approach for the simulation of airbag deployment
No full textThe numerical simulation of airbags is receiving an increasing attention for the remarkable advantages in terms of cost, efficiency, flexibility and amount of data that can be extracted from the analysis. This work proposes an advanced fluid–structure interaction (FSI) numerical technique for the simulation of airbag deployment. The fluid subproblem, described by weakly compressible Navier–Stokes equations, is solved exploiting the advanced features of the Particle Finite Element Method (PFEM) while the solid subproblem is addressed using standard Finite Element method. A domain decomposition approach with a special treatment of the fluid–structure interface conditions has been implemented to couple fluid and structural solvers allowing for non-conforming meshes at the interface and different time step size in the two subdomains. A peculiar feature of the proposed methodology is the explicit time integration, mandatory for the solution of very fast dynamics problems, like the airbag deployment: an explicit fluid solver is coupled explicitly with an explicit structural solver. The proposed technique is first tested on a inflation of a balloon, showing very good agreements and then it has been applied to the real case of airbag deployment
Magnetic resonance with fat-saturation sequences in studying the upper abdomen: the normal semeiological aspects].
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