1.Cervical Tuberculous Lymphadenitis: MR Features.
Ho Chul KIM ; Sang Hoon BAE ; Yul LEE ; Kil Woo LEE ; So Yeon CHO ; Kyu Sun KIM ; Saang Joe LEE
Journal of the Korean Radiological Society 1995;33(4):521-525
PURPOSE: To characterize the magnetic resonance (MR) imaging features of cervical tuberculous lymphadenitis. MATERIALS AND METHODS: The cervical MR images of 14 patients with pathologically or clinically proven cervical tuberculous lymphadenitis were retrospectively analyzed. T1- and T2-weighted or proton density images and contrast enhanced MR images were obtained in all patients. RESULTS: Most patient had multiple (n=12), unilateral lesions (n=l0), 8 mm to 45 mm in size, round (n=46) or ovoid (n=46) in shape and all with smooth and well-defined margins mostly at internal jugular chain(N2: 41, N3: 2, N4: 21 ). The signal intensities of the most lymph nodes were isointense or slightly hyperintense on T1 -weighted images, and hyperintense (all) with variable homogeneity on T2-weighted and/or proton density images. After contrast enhancement most showed characteristic thin peripheral rim enhancement (n=71). CONCLUSION: The characteristic MR features of cervical tuberculous lymphadenitis would be multiple, unilateral enlarged lymph nodes which show iso or slightly increased signal intensity on T1 -weighted image, high signal intensity on T2-weighted and/or proton density image and peripheral rim enhancement.
Humans
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Lymph Nodes
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Protons
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Retrospective Studies
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Tuberculosis, Lymph Node*
2.Diagnostic Accuracy and Usefulness of Three Dimensional Image of Helical CT in Maxillofacial Fractures.
Saang Joe LEE ; Ho Chul KIM ; Sang Hoon BAE ; Dae Young YOON ; Moon Hae CHOI ; Young Choon KIM
Journal of the Korean Radiological Society 1997;36(4):575-578
PURPOSE: The purpose of this study is to compare the diagnostic accuracy and usefelness of three dimensional CT, plain radiography and two-dimensional axial CT in cases of maxillofacial fracture. MATERIALS AND METHODS: Plain radiography, two dimensional axial CT, and three dimensional helical CT images of eighty-two maxillofacial fractures in 45 patients were retrospectively analyzed according to detectability of fracture and displacement. The diagnostic accuracy of each modality was analysed using the Ridit method. RESULTS: Two- and three-dimensional CT were superior to plain radiography in evaluating fracture and displacement (p=0.001, 0.039), though the type of CT used did not cause significantly variation in the accuracy with which fracture and diferrent were diagnosed. CONCLUSION: Three dimensional helical CT is useful not only in the detection of fracture but in the evaluation of displaced maxillofacial fractures, especially if these are multiple and the complex.
Humans
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Imaging, Three-Dimensional*
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Radiography
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Retrospective Studies
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Tomography, Spiral Computed*