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Comparison of Quality of Multiplanar Reconstructions and Direct Coronal Multidetector CT Scans of the Lung

Osamu Honda1, Takeshi Johkoh1, Shuji Yamamoto2, Mitsuhiro Koyama1, Noriyuki Tomiyama1, Takenori Kozuka1, Seiki Hamada1, Naoki Mihara1, Hironobu Nakamura1 and Nestor L. Müller3

1 Department of Radiology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
2 Department of Radiology, Osaka University Hospital, Osaka, 565-0871, Japan.
3 Department of Radiology, Vancouver Hospital and Health Sciences Centre and University of British Columbia, 855 W. 12th Ave., Vancouver, B. C. V5Z 1M9, Canada.



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  		Fig. 1A. —Lung of 68-year-old male cadaver. Direct coronal thin-section multidetector CT image of lung with 0.5-mm collimation and pitch of 6:1 clearly shows interlobular septum (arrowhead), central and peripheral bronchovascular bundles, and major fissure (arrow).

 


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  		Fig. 1B. —Lung of 68-year-old male cadaver. Coronal multiplanar reconstruction image from 0.5-mm-collimation data sets with 0.3-mm overlapping reconstruction shows image quality similar to that of A.

 


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  		Fig. 1C. —Lung of 68-year-old male cadaver. Coronal multiplanar reconstruction image from 0.5-mm-collimation data set without overlapping reconstruction shows image quality similar to that of B.

 


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  		Fig. 1D. —Lung of 68-year-old male cadaver. On coronal multiplanar reconstruction image from 1-mm-collimation data set with 0.5-mm overlapping reconstruction, interlobular septum (arrowhead) is ambiguous compared with direct coronal thin-section CT image (A) and coronal multiplanar reconstruction images from 0.5-mm-collimation data set with (B) and without (C) 0.3-mm overlapping reconstruction.

 


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  		Fig. 1E. —Lung of 68-year-old male cadaver. Coronal multiplanar reconstruction image from 2-mm-collimation data set with 1-mm overlapping reconstruction shows considerable noise. Interlobular septum, central and peripheral bronchovascular bundles, and major fissure (arrow) are ambiguous.

 

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