Radiology Key

Multidetector CT (MDCT) is the imaging method of choice for the diagnosis of intra-abdominal injury following blunt abdominal trauma. Treatment is directed by characterization of the precise nature of the…

Peritoneal Cavity Anatomy The various recesses and spaces of the peritoneal cavity are easiest to recognize on CT when ascites is present. Identifying the precise compartment that an abnormality is…

Biliary Tree Primary imaging of the biliary tree depends increasingly on CT, ultrasonography, magnetic resonance imaging, and magnetic resonance cholangiopancreatography, and with diminishing reliance on invasive endoscopic retrograde cholangiopancreatography. Multidetector…

Technical Considerations In general, the pleura and chest wall are adequately evaluated with routine thoracic CT techniques. Contrast medium infusion is helpful in showing pleural thickening and in allowing its…

Aortic Abnormalities Computed tomography (CT) is commonly used to diagnose abnormalities of the aorta or its branches when they are suspected clinically or because of radiographic abnormalities. Congenital Anomalies Congenital…

Lymph Node Groups Mediastinal lymph nodes are generally classified by location. Most descriptive systems are based on a modification of Rouvière’s classification of lymph node groups. The names used in…

Despite marked advances in limiting image times for magnetic resonance imaging, CT remains the primary modality for most indications for imaging the abdomen and pelvis. The technology of multidetector CT…

Computed tomography (CT) is commonly used in patients suspected of having a mediastinal mass or vascular abnormality (e.g., an aortic aneurysm). In general, CT is performed in two situations. First,…