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William C. Schoenborn DVM Erik R. Wisner DVM Philip P. Kass DVM PhD Margaret Dale 《Veterinary radiology & ultrasound》2003,44(2):185-195
Sixty-two cats with sinonasal disease were evaluated with computed tomography. Findings that may lead to a computed tomographic diagnosis of nasal neoplasia versus rhinitis included osteolysis of the paranasal bones, moderate to severe turbinate destruction, lysis of the nasal septum, the presence of a homogenous space occupying mass, and extension of the disease process into the orbit or facial soft tissues. These findings were not pathognomonic for neoplasia and may be associated with severe rhinitis; therefore, nasal biopsy was recommended. When compared with parallel radiographic studies, computed tomography was not more sensitive than radiographs at detecting the presence of nasal cavity abnormalities in cats with referable clinical signs but was more sensitive at localizing these changes and determining the extent of disease. 相似文献
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William C. Schoenborn DVM Mark C. Rick DVM William J. Hornof DVM MS 《Veterinary radiology & ultrasound》2002,43(6):541-544
A 6-year-old Thoroughbred gelding presented with a left forelimb lameness. The results of lameness examination, radiography, nuclear scintigraphy, and computed tomography are presented. Based on the diagnostic imaging, subchondral fractures and osteochondritis dissecans lesions of the proximal articular surface of the proximal phalanx were diagnosed. A brief discussion of osteochondritis dissecans is presented. 相似文献
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A complete mapping of the proteins in the small ribosomal subunit of Escherichia coli 总被引:17,自引:0,他引:17
M S Capel D M Engelman B R Freeborn M Kjeldgaard J A Langer V Ramakrishnan D G Schindler D K Schneider B P Schoenborn I Y Sillers 《Science (New York, N.Y.)》1987,238(4832):1403-1406
The relative positions of the centers of mass of the 21 proteins of the 30S ribosomal subunit from Escherichia coli have been determined by triangulation using neutron scattering data. The resulting map of the quaternary structure of the small ribosomal subunit is presented, and comparisons are made with structural data from other sources. 相似文献
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