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Coronal Reformations of Volumetric Expiratory High-Resolution CT of the Lung

Mizuki Nishino1, Masaomi Kuroki, Phillip M. Boiselle, John F. Copeland, Vassilios Raptopoulos and Hiroto Hatabu

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



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  		Fig. 1. —79-year-old man with history of bronchiectasis and cardiac pacemaker. End-expiratory coronal reformatted image of volumetric expiratory high-resolution CT scan shows prominent beam-hardening artifact caused by cardiac pacemaker lead, resulting in diagnostically limiting image degradation in lower lung areas.

 


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  		Fig. 2A. —70-year-old man with history of asthma and hemoptysis. End-inspiratory coronal reformatted image from volumetric high-resolution CT scan shows appearance of lung filled with air throughout.

 


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  		Fig. 2B. —70-year-old man with history of asthma and hemoptysis. End-expiratory coronal reformatted image from volumetric expiratory high-resolution CT scan shows segmental air trapping (arrows) in right lower lobe with clear borders. Note multiple areas of mosaic air trapping throughout lung.

 


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  		Fig. 3A. —66-year-old man with clinical diagnosis of nonspecific interstitial pneumonia. End-expiratory coronal reformatted image at level of tracheal bifurcation shows multiple areas of air trapping in segmental and lobular distribution with clear borders. Note honeycombing in right upper lobes with subpleural distribution.

 


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  		Fig. 3B. —66-year-old man with clinical diagnosis of nonspecific interstitial pneumonia. End-expiratory coronal reformatted image from high-resolution CT scan obtained at level of posterior lung parenchyma shows multiple areas of segmental air trapping. Borders are especially clearly demarcated in superior, inferior, and lateral directions.

 

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