Technologic advances in computed tomography.
Technologic improvements in CT continue. As always, emphasis in the past year has been on reducing scan times. Units employing slip-ring technology are now available. This technology makes possible spiral scanning, which promises to further reduce the effects of image-degrading patient motion, as well as opening new possibilities for quantitative and dynamic CT studies. These applications are discussed here and an update on the advances on cine-CT and the Dynamic Spatial Reconstructor unit is provided. Three-dimensional reconstructions obtained at very short scan times promise to be of particular benefit for scanning the bronchial tree. Finally, patient doses of radiation in CT are discussed.
Villafana
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Department of Diagnostic Imaging, Temple University Hospital, Philadelphia, PA 19140.
D015519:Bone Density; D002933:Cineradiography; D006801:Humans; D007091:Image Processing, Computer-Assisted; D011829:Radiation Dosage; D013679:Technology, Radiologic; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods; D014978:Xenon
D014978:Xenon