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In vivo analysis of single, pre- and postprocessing quantitative CT techniques
1From the Mallinckrodt Institute of Radiology, Washington University Medical School, St. Louis, Missouri 63110.
Investigative Radiology
|January 1, 1988
Abstract:
Measurements of bone mineral using single and dual-energy quantitative computed tomography (CT) are examined in vivo in 108 vertebral bodies scanned on a Siemens DRH scanner. Pre and postprocessing dual-energy techniques are compared. In the range of clinically useful kilovoltage, the choice of beam energy does not make a significant difference to the single-energy bone mineral measurement. Postprocessing dual-energy measurement in vivo shows a statistically significant decrease in the amount of mineral measured compared to single-energy measurements, whereas the preprocessing measurement shows a significant increase.