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Cine CT During Coughing for Assessment of Tracheomalacia: Preliminary Experience with 64-MDCT

Phillip M. Boiselle1, Karen S. Lee1, Shezhang Lin1 and Vassilios Raptopoulos1

1 All authors: Center for Airway Imaging, Department of Radiology, Harvard Medical School, Beth Israel Deaconess Medical Center, 330 Brookline Ave., Boston, MA 02215.


Figure 1
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  		Fig. 1 —Changes in cross-sectional area of trachea lumen during repeated coughing. Graph shows sequential reductions in cross-sectional area lumen of trachea during coughing at four contiguous levels of analysis, with approximately 75% reduction in cross-sectional area lumen. Note relative consistency in tracheal lumen diameter changes over repeated coughing episodes, with only mild degrees of variation in maximal and minimal tracheal lumen diameter. L1-L4 = consecutive levels 1 through 4, with L1 at approximately midaortic arch level and L4 at approximately carinal level.

 

Figure 2
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  		Fig. 2A —Tracheomalacia elicited by coughing maneuver in 70-year-old woman. Inspiratory image at level of aortic arch shows normal caliber of airway lumen.

 

Figure 3
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  		Fig. 2B —Tracheomalacia elicited by coughing maneuver in 70-year-old woman. Image during coughing at similar level shows near complete collapse of airway lumen, consistent with tracheomalacia.

 

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