From single slices to volume imaging: (r)evolution in computed tomography

  • A. F. Kopp
  • K. Klingenbeck-Regn
  • B. Ohnesorge
  • C. D. Claussen


Since its clinical introduction in 1991, volumetric CT scanning using spiral or helical scanners has resulted in a revolution for diagnostic imaging. In addition to new applications for CT, such as CT angiography and the assessment of patients with renal colic, many routine applications such as the detection of lung and liver lesions have substantially improved. Helical CT has improved over the past eight years with faster gantry rotation, more powerful X-ray tubes, and improved interpolation algorithms [7,14]. However, in practice the spiral data sets from monoslice systems suffered from a considerable mismatch between the transverse (in plane) and the longitudinal (axial) spatial resolution. In other words the isotropic 3-dimensional voxel could not be realized apart from some very specialized cases [12]. Similarly, in routine practice a number of limitations still remained which prevented the scanning protocol to be fully adapted to the diagnostic needs [5].


Single Slice Volume Coverage Slice Width Spiral Scanning Somatom Volume Zoom 


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Copyright information

© Springer-Verlag Wien 2001

Authors and Affiliations

  • A. F. Kopp
    • 1
  • K. Klingenbeck-Regn
    • 2
  • B. Ohnesorge
    • 2
  • C. D. Claussen
    • 1
  1. 1.Department of Diagnostic RadiologyEberhard-Karls-University TübingenGermany
  2. 2.Medical EngineeringSiemens AGForchheimGermany

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