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CHORUS

Collaborative Hypertext of Radiology


Respiratory system

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lung ventilation agents


  • Xe-133
    • most commonly used

  • Xe-127
    • t = 36.4 days; photons @ 172, 203, 375 keV
    • can image V after Q

  • Kr-81m
    • very expensive
    • t = 13 sec; photon 190 keV
    • can repeat V in each projection

  • Tc-99m DTPA aerosol
    • can image V in mult. projections
    • image Q after V
    • 1 mCi ==> 50-75 mrad to lung

  • V/Q imaging


Charles E. Kahn, Jr., MD  -  2 February 1995
Last updated:  1 October 2013


 

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Biello-Siegel criteria

 

Copyright © 2013, Charles E. Kahn, Jr.