AJR. American journal of roentgenology
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AJR Am J Roentgenol · Nov 1992
Comparative StudyRelapsing-remitting multiple sclerosis: sequential enhanced MR imaging vs clinical findings in determining disease activity.
Sequential MR imaging frequently shows disease activity (clinically silent new brain lesions) in subgroups of patients with multiple sclerosis and therefore is valuable in monitoring the effects of treatment. Monitoring of disease activity in patients being treated for relapsing-remitting multiple sclerosis will increase in importance as new and safe therapies are developed. We studied sequential enhanced MR images of patients with early relapsing-remitting multiple sclerosis to define the MR features that indicate disease activity in this subgroup of patients and to compare MR imaging and clinical findings for this purpose. ⋯ Our results suggest that contrast-enhanced MR imaging is more sensitive than clinical monitoring for detecting new disease activity in patients with relapsing-remitting multiple sclerosis and that MR imaging might be useful in the evaluation of therapeutic regimens.
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AJR Am J Roentgenol · Oct 1992
Diagnostic and therapeutic use of chest sonography: value in critically ill patients.
Portable chest radiography, used for critically ill patients, often fails to depict thoracic disease clearly. Chest sonography allows good characterization of pleural diseases, mediastinal lesions, and pulmonary consolidations, and provides accurate and safe guidance for interventional procedures. Accordingly, we evaluated its usefulness in the diagnosis and management of critically ill patients. ⋯ Chest sonography is a useful diagnostic tool for critically ill patients with chest diseases. This technique can be particularly helpful when CT is not available or when critically ill patients cannot be moved.
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AJR Am J Roentgenol · Sep 1992
ReviewNeoplastic diseases affecting the central skull base: CT and MR imaging.
Modern imaging techniques play a vital role in the diagnostic evaluation and follow-up of patients with neoplastic disease affecting the skull base. Many of these lesions have a high rate of recurrence if surgical removal is not complete. ⋯ Although these lesions are not common in clinical radiologic practice, the radiologist must be prepared to offer a reasonable differential diagnosis and a full evaluation of the extent of disease. This review presents some of the more commonly encountered tumors that can affect the skull base and describes their radiologic features, with emphasis on CT and MR imaging.
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AJR Am J Roentgenol · Sep 1992
Comparative StudyMembranous obstruction of the inferior vena cava: comparison of findings at sonography, CT, and venography.
Membranous or segmental obstruction of the inferior vena cava is one of the common causes of chronic Budd-Chiari syndrome. In this study, the venographic findings are compared with the results of sonography and CT in order to ascertain their role in the management of these cases. ⋯ Sonography was superior to CT in delineating pathologic venous anatomy of the inferior vena cava and hepatic veins whereas CT was better in evaluating hepatic cirrhosis and tumor. We believe that these techniques are useful complements to venography in the diagnosis and management of these cases.