Dosimetric characteristics of a 16-slice computed tomography scanner

  title={Dosimetric characteristics of a 16-slice computed tomography scanner},
  author={Nicholas Theocharopoulos and Kostas Perisinakis and John Damilakis and Spyros K Karampekios and Nicholas C. Gourtsoyiannis},
  journal={European Radiology},
Standard CT dose measurements were performed on a Siemens Sensation 16 scanner. CT dose indices, free-in-air (CTDIF) and weighted (CTDIW), were measured in all available axial and helical beam collimations of the head and body scanning modes. The effect of tube current, high voltage, rotation time, beam collimation and pitch on the CT doses was investigated. CT doses increased as a power function of high voltage. The kVp exponent n varied with beam collimation from 2.7 to 3.1 for CTDIW, and… CONTINUE READING
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