Dental multisection CT for the placement of oral implants: technique and applications.

Dental computed tomography (CT) is a diagnostic examination for the preoperative evaluation of patients who will undergo placement of oral implants. It can be performed with multidetector CT or more recently with cone-beam CT. The growing older population and the consequent development of edentulism have increased the number of imaging studies performed for preoperative evaluation of dental implantation.

[Amebiasis. The technology of the 80's. I. Ultrasound, computerized tomography and magnetic resonance: have they helped improve the diagnosis of hepatic abscess?].

A complete change in the diagnosis of amebic liver abscess has been accomplished since the introduction of new imaging modalities. Ultrasound is today the ideal screening procedure because of it's greater availability, high accuracy and low cost. Computed Tomography is more sensitive and specific and also has greater capacity in the differential diagnosis of intrahepatic and extrahepatic lesions; it is recommended when there is a difficult diagnosis or when there is no response to medical treatment.

[Secondary sclerosing cholangitis. Radiologic diagnosis and anatomoclinical correlation. Report of a case].

Radiological diagnosis of secondary sclerosing cholangits was made in a patient who presented changes in morphology of the biliary tree in two consecutive post-operatory T-tube cholangiograms. The main change was a diffuse narrowness of the intrahepatic branches. Anatomical changes in post mortem examination had a good correlation with radiological images.

[Pancreatic phlegmon].

Seven patients with severe pancreatic inflamation secondary to acute pancreatitis are reported. Symptoms, laboratory data and radiologia findings suggested the diagnosis of phlegmon of the pancreas. The ultrasonography of the pancreas was useful for discriminating pancreatic pseudocyst from this entity.