Relationship between noise, dose, and pitch in cardiac multi-detector row CT.

  title={Relationship between noise, dose, and pitch in cardiac multi-detector row CT.},
  author={Andrew N. Primak and Cynthia H. McCollough and Michael R. Bruesewitz and Jie Zhang and Joel G. Fletcher},
  journal={Radiographics : a review publication of the Radiological Society of North America, Inc},
  volume={26 6},
In spiral computed tomography (CT), dose is always inversely proportional to pitch. However, the relationship between noise and pitch (and hence noise and dose) depends on the scanner type (single vs multi-detector row) and reconstruction mode (cardiac vs noncardiac). In single detector row spiral CT, noise is independent of pitch. Conversely, in noncardiac multi-detector row CT, noise depends on pitch because the spiral interpolation algorithm makes use of redundant data from different… CONTINUE READING

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