Respiratory regularity gated 4D CT acquisition: concepts and proof of principle

  title={Respiratory regularity gated 4D CT acquisition: concepts and proof of principle},
  author={Paul J. Keall and Subrahmanya S Vedam and Reni George and Jeffrey F. Williamson},
  journal={Australasian Physics & Engineering Sciences in Medicine},
Four-dimensional CT images are generally sorted through a post-acquisition procedure correlating images with a time-synchronized external respiration signal. The patient’s ability to maintain reproducible respiration is the limiting factor during 4D CT, where artifacts occur in approximately 85% of scans with current technology. To reduce these artifacts and their subsequent effects during radiotherapy planning, a method for improved 4D CT image acquisition that relies on gating 4D CT… CONTINUE READING


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