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Conventional High-Resolution CT Versus Helical High-Resolution MDCT in the Detection of Bronchiectasis

Jonathan D. Dodd1, Carolina A. Souza1 and Nestor L. Müller1

1 All authors: Department of Radiology, Vancouver General Hospital, 855 W. 12th Ave., Vancouver, British Columbia, Canada V6K 1R4.


Figure 1
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  		Fig. 1A —67-year-old man suspected clinically of bronchiectasis. Conventional high-resolution CT (HRCT) images show no evidence of bronchiectasis in right upper lobe.

 

Figure 2
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  		Fig. 1B —67-year-old man suspected clinically of bronchiectasis. Conventional high-resolution CT (HRCT) images show no evidence of bronchiectasis in right upper lobe.

 

Figure 3
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  		Fig. 1C —67-year-old man suspected clinically of bronchiectasis. Conventional high-resolution CT (HRCT) images show no evidence of bronchiectasis in right upper lobe.

 

Figure 4
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  		Fig. 1D —67-year-old man suspected clinically of bronchiectasis. Corresponding MDCT images at level of B. At this level, bronchiectasis (arrow) in D and E abuts the costal margin in F. This resulted in a false-negative conventional HRCT scan.

 

Figure 5
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  		Fig. 1E —67-year-old man suspected clinically of bronchiectasis. Corresponding MDCT images at level of B. At this level, bronchiectasis (arrow) in D and E abuts the costal margin in F. This resulted in a false-negative conventional HRCT scan.

 

Figure 6
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  		Fig. 1F —67-year-old man suspected clinically of bronchiectasis. Corresponding MDCT images at level of B. At this level, bronchiectasis (arrow) in D and E abuts the costal margin in F. This resulted in a false-negative conventional HRCT scan.

 

Figure 7
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  		Fig. 2A —53-year-old man suspected clinically of bronchiectasis. In conventional high-resolution CT (HRCT), image because branching points of vessels are in between slices, their relationships to accompanying bronchi are not clearly seen. Both observers scored the bronchus (arrow) as bronchiectasis in right middle lobe.

 

Figure 8
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  		Fig. 2B —53-year-old man suspected clinically of bronchiectasis. Corresponding MDCT images show the vessel branching before its accompanying bronchus (arrow), resulting in an "apparent" increased bronchoarterial diameter ratio. This resulted in a false-positive HRCT scan.

 

Figure 9
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  		Fig. 2C —53-year-old man suspected clinically of bronchiectasis. Corresponding MDCT images show the vessel branching before its accompanying bronchus (arrow), resulting in an "apparent" increased bronchoarterial diameter ratio. This resulted in a false-positive HRCT scan.

 

Figure 10
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  		Fig. 2D —53-year-old man suspected clinically of bronchiectasis. Corresponding MDCT images show the vessel branching before its accompanying bronchus (arrow), resulting in an "apparent" increased bronchoarterial diameter ratio. This resulted in a false-positive HRCT scan.

 

Figure 11
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  		Fig. 2E —53-year-old man suspected clinically of bronchiectasis. Corresponding MDCT images show the vessel branching before its accompanying bronchus (arrow), resulting in an "apparent" increased bronchoarterial diameter ratio. This resulted in a false-positive HRCT scan.

 

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