Defect production and annealing in ion-implanted amorphous silicon.
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Biomedical subjects
Publications and source records attributed to F Priolo.
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Pelvic fractures, although accounting for only 2-3% of all traumatic skeletal lesions, are extremely important due to the frequent sequelae and complications that can cause the death of the patient. Moreover, their incidence is increasing due to road accidents, sport and work injuries. X-ray examinations, if correctly performed, allow the degree of residual stability of the pelvic ring to be assessed; they allow both the recognition of the mechanisms of injury and the evaluation of bone lesions. The X-ray examination can provide the orthopedist all the necessary information for the correct treatment planning, employing an external setting or, when the lesion is unstable, an open-field setting. The authors, after considering the major types of pelvic ring fractures, classified on the basis of the mechanisms of injury, suggest the best radiologic protocol, in their opinion, for the pelvic fractures whose diagnosis is based on X-ray examinations. In these cases, CT is less useful than in the study of acetabular fractures; it rarely provides additional information and thus remains a supplemental exam to X-rays.
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The authors have studied the anatomical-radiographic correlations in 55 patients with osteoid osteoma. On the basis of the results gathered we feel able to state that the variability of radiologic features of osteoid osteoma (nidus surrounded by a zone of sclerosis) depends on the site of the lesion and on the advanced stage of the neoplastic tissue.
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The clinico-radiologic and histopathologic features of 40 osteoid osteomas and 12 osteoblastomas are compared. The authors conclude there are no significant differences between these two tumors except for the size of the neoplastic area and the degree of evolution of the neoplastic tissue.
The authors examined 52 miners affected by Raynaud's phenomenon caused by vibrating instruments, mainly checking the involvement of the osteoarticular system. They found, in the articulation of the upper limbs, in addition to generic signs of arthrosis, zones of bone reabsorption (vacuoles), especially as regard the wrist and hands, and irregularities of the tufts. The authors consider these lesions as important feature of the technopathy.
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