Pituitary Microadenomas Evaluated by Multislice Dynamic CT

抄録

Multislice dynamic CT (MSDCT) is a new technology with a short scanning time. MSDCT in various scanning directions can be obtained using the multidetector-row CT with a multiplanar reformatting (MPR) technique. We evaluated the preliminary results of sagittal and coronal MSDCT reconstructed by MPR (MSDCT-MPR) in 15 patients with pathologically confirmed pituitary microadenomas. The maximum contrast between the normal anterior pituitary gland and the adenoma occurred approximately 50 seconds after the start of the injection of the contrast media. Microadenomas were depicted as less enhanced areas relative to normal pituitary tissue. In two patients, cavernous sinus invasion of the tumor was clearly detected. Early enhancement of the microadenoma was not identified. This development of the MSDCT-MPR technique provided necessary information for surgery. This is the first report, to our knowledge, of the MSDCT-MPR technique being used to demonstrate pituitary microadenomas.