Pulmonary perfusion: respiratory-triggered three-dimensional MR imaging with arterial spin tagging--preliminary results in healthy volunteers.

@article{Roberts1999PulmonaryPR,
  title={Pulmonary perfusion: respiratory-triggered three-dimensional MR imaging with arterial spin tagging--preliminary results in healthy volunteers.},
  author={David M. Roberts and Warren B. Gefter and J A Hirsch and Rahim R. Rizi and Lawrence Dougherty and Robert E. Lenkinski and John S. Leigh and Mitchell D. Schnall},
  journal={Radiology},
  year={1999},
  volume={212 3},
  pages={890-5}
}
The authors used a spin-tagging method of magnetic resonance perfusion imaging to measure pulmonary perfusion in eight healthy volunteers with use of a respiratory-triggered three-dimensional pulse sequence. The average signal intensity (SI) decrease upon arterial labeling was 24%. The perfusion SI increased by 21% after exercise (P = .02). Focal blood flow abnormalities were observed in a patient with chronic obstructive pulmonary disease. 

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