RESUMEN
Multiphase CTA offers several important advantages over the traditional single-phase CTA technique in acute ischemic stroke, including improved detection of large-vessel occlusion, improved characterization of collateral status, improved tolerance of patient motion and poor hemodynamics, and higher interrater reliability. These benefits are gleaned at little additional cost in terms of time, risk to the patient, and capital expense. Existing data suggest that there are important benefits to using multiphase CTA in lieu of single-phase CTA in the initial vessel assessment of patients with acute stroke.
Asunto(s)
Angiografía Cerebral/métodos , Angiografía por Tomografía Computarizada/métodos , Accidente Cerebrovascular/diagnóstico por imagen , Anciano , Circulación Colateral , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los ResultadosRESUMEN
Gastrointestinal stromal tumors (GISTs) account for the majority of gastrointestinal mesenchymal tumors. Recent advances in treatment using the molecular targeting agent imatinib mesylate have shown startling response rates and variegated imaging findings. We present the various imaging appearances of GIST on computed tomography (CT) and magnetic resonance imaging (MRI), both before and after treatment.
Asunto(s)
Antineoplásicos/uso terapéutico , Tumores del Estroma Gastrointestinal/tratamiento farmacológico , Tumores del Estroma Gastrointestinal/patología , Imagen por Resonancia Magnética , Evaluación de Resultado en la Atención de Salud/métodos , Piperazinas/uso terapéutico , Pirimidinas/uso terapéutico , Tomografía Computarizada por Rayos X , Benzamidas , Medios de Contraste , Progresión de la Enfermedad , Tumores del Estroma Gastrointestinal/diagnóstico por imagen , Humanos , Mesilato de Imatinib , Recurrencia Local de Neoplasia , Valor Predictivo de las PruebasRESUMEN
The association of adrenal pheochromocytoma and brown fat has been described in the pathology literature and scantily in the radiology literature. We present a case of diffuse collection of brown fat in both perinephric spaces associated with left adrenal pheochromocytoma, and describe the computed tomography and magnetic resonance imaging findings.
Asunto(s)
Tejido Adiposo Pardo/patología , Neoplasias de las Glándulas Suprarrenales/diagnóstico , Feocromocitoma/diagnóstico , Tejido Adiposo Pardo/diagnóstico por imagen , Neoplasias de las Glándulas Suprarrenales/diagnóstico por imagen , Adulto , Medios de Contraste , Diagnóstico Diferencial , Femenino , Estudios de Seguimiento , Humanos , Aumento de la Imagen , Imagen por Resonancia Magnética , Feocromocitoma/diagnóstico por imagen , Intensificación de Imagen Radiográfica , Tomografía Computarizada por Rayos XRESUMEN
A 90-year-old woman was admitted for progressively increasing lower abdominal pain. There was no history of prior surgery, and physical examination was non-specific. The supine abdominal radiograph revealed an abnormal collection of air over the right obturator foramen. Computed tomography showed a right obturator hernia with incarcerated bowel in the hernial sac, and a right sciatic hernia containing the right ovary. The anatomy of obturator and inguinal hernias is reviewed, and the use of various imaging modalities in evaluation of abdominal hernias is discussed.