RESUMEN
Direct sagittal CT air-contrast arthrography can provide useful diagnostic information in the evaluation of disorders of the temporomandibular joint. The technique for the performance of this examination is practical and efficient, using a specifically designed head-holder, which is described. This technique effectively complements the clinical and imaging work-up of jaw dysfunction.
Asunto(s)
Luxaciones Articulares/diagnóstico , Imagen por Resonancia Magnética , Neumorradiografía , Síndrome de la Disfunción de Articulación Temporomandibular/diagnóstico , Articulación Temporomandibular/lesiones , Tomografía Computarizada por Rayos X , Adulto , Artrografía/métodos , Femenino , Humanos , Masculino , Persona de Mediana EdadRESUMEN
Indium-111-labeled leukocyte scans were performed on 39 patients with suspected musculoskeletal infections to assess the usefulness of this study in detecting bone and joint infections. Results of these scans, as well as results of technetium-99m bone scans, were correlated with the patients' final diagnoses. The indium scan had an overall sensitivity of 77%, a specificity of 69%, and an accuracy of 72%. In 10 patients with a duration of symptoms of six weeks or less, the sensitivity was 100% and the specificity was 75%. In 29 patients with symptoms of greater than six weeks, the sensitivity and specificity were lower at 50% and 71% respectively. Technetium-99m bone scans were performed on 23 patients; sensitivity for infection was 100% while specificity was 60%. Our results suggest that the indium-111 leukocyte scan is a useful adjunct in the diagnosis of acute musculoskeletal infections, but may be inconclusive in chronic infections.
Asunto(s)
Enfermedades Óseas/diagnóstico por imagen , Hidroxiquinolinas , Radioisótopos de Indio , Infecciones/diagnóstico por imagen , Enfermedades Musculares/diagnóstico por imagen , Compuestos Organometálicos , Oxiquinolina , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Femenino , Humanos , Leucocitos , Masculino , Persona de Mediana Edad , Oxiquinolina/análogos & derivados , CintigrafíaRESUMEN
Inflammation of the middle ear cleft is a disease of great interest from both clinical and radiologic points of view. The attic floor (tympanic diaphragm), the tympanic isthmus, and the aditus ad antrum play important roles in inflammatory processes of the middle ear cleft. The anatomy of the temporal bone at this level was examined by studying microdissections of 250 fresh temporal bones and reviewing over 1,000 high-resolution computed tomography (CT) scans of the temporal bones. The pertinent anatomy is described, and the role of the tympanic diaphragm and isthmus in determining the degree to which middle ear disease may progress is stressed. The appearances on CT scans of chronic otomastoiditis, tympanosclerosis, cholesterol granuloma, attic retraction pocket, and acquired cholesteatoma are reviewed and illustrated.