Sources of error in lung densitometry with CT.

  title={Sources of error in lung densitometry with CT.},
  author={Berend C. Stoel and Henri A. Vrooman and J. G. Stolk and Johan H. C. Reiber},
  journal={Investigative radiology},
  volume={34 4},
RATIONALE AND OBJECTIVES To determine and analyze the most important error sources in lung CT densitometry in vivo. METHODS The authors examined the influences of CT acquisition errors, physiologic changes, and image segmentation errors on lung densitometry. Among others, spatial dependency and long-term reproducibility of the density measurements of blood and air were examined over a period of 4 years in a group of 28 patients with pulmonary emphysema. These results were related to the… CONTINUE READING