RESUMEN
The distance between the orbits and their individual dimensions are important in the diagnosis of craniofacial anomalies. Most observers rely on standard radiographs for measuring the bony interorbital distance. Tomography of the skull base and orbital computed tomography (CT) can also be used. This article describes the normal range of the bony interorbital distance and other useful orbital linear and angular measurements as determined from a series of CT scans of the orbits in 400 adults who had CT for other purposes. The normal interorbital distance measured at the posterior border of the frontal processes of the maxilla on nonrotated scans, in the plane of the optic nerve, ranges from 2.29 to 3.21 cm (average, 2.67 cm) in men and 2.29 to 3.20 cm (average, 2.56 cm) in women. The widest interorbital distance lies behind the posterior poles of the globes. This ranges from 3.16 to 4.10 cm (average, 3.37 cm) in men and 2.93 to 3.67 cm (average, 3.20 cm) in women.
Asunto(s)
Órbita/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Adolescente , Adulto , Anciano , Femenino , Humanos , Hipertelorismo/diagnóstico por imagen , Masculino , Disostosis Mandibulofacial/diagnóstico por imagen , Microftalmía/diagnóstico por imagen , Persona de Mediana Edad , Órbita/anatomía & histología , Valores de ReferenciaAsunto(s)
Bilis , Iminoácidos , Peritonitis/diagnóstico por imagen , Tecnecio , Anciano , Humanos , Masculino , Peritonitis/etiología , Cintigrafía , Disofenina de Tecnecio Tc 99mRESUMEN
Computed tomography (CT) has been in clinical use for nearly a decade. The capabilities and potentials of this tool in evaluating disease of various organs are continuously being explored. A number of articles have been published focusing on its clinical applications in hepatic disorders and comparing its efficacy with other imaging modalities. This review presents hepatic CT findings and their utility in clinical practice.
Asunto(s)
Hepatopatías/diagnóstico por imagen , Hígado/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Medios de Contraste , Reacciones Falso Negativas , Reacciones Falso Positivas , Humanos , Ictericia/etiología , Hepatopatías/diagnóstico , Neoplasias Hepáticas/diagnóstico por imagen , UltrasonografíaRESUMEN
The authors present 2 cases of intestinal perforation which were not associated with free intraperitoneal air detectable on abdominal radiographs. Computed tomography demonstrated evidence of intraperitoneal leakage of orally administered contrast material and thereby provided the correct diagnosis.
Asunto(s)
Perforación Intestinal/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Anciano , Extravasación de Materiales Terapéuticos y Diagnósticos , Femenino , Humanos , Persona de Mediana Edad , Cavidad Peritoneal/diagnóstico por imagenRESUMEN
After repair work was performed on a magnetic resonance (MR) imager, images of the brain were obtained from a patient with an acoustic neuroma on the left side. On the images, the tumor appeared to be on the right side. The reversal occurred due to a reversal of gradient wire connections. To prevent such an event after MR imager repair, a phantom with side markers should be imaged.