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European Radiology

, Volume 8, Issue 4, pp 609–614 | Cite as

Pulmonary nodules: detection with low-dose vs conventional-dose spiral CT

  • M. Gartenschläger
  • F. Schweden
  • K. Gast
  • T. Westermeier
  • H.-U. Kauczor
  • H. von Zitzewitz
  • M. Thelen
Chest radiology, Original article

Abstract.

The purpose of the study was the evaluation of low-dose spiral CT in the detection and assessment of contours of pulmonary nodules. In a prospective investigation 71 consecutive chest CT examinations were acquired both at 30 and 200 mA. Films were interpreted independently by two radiologists. According to the size, nodules were divided into four categories: ≤ 3, 4–5, 6–10, and > 10 mm; nodule shape was registered. With both protocols, 240 nodules were detected. The correlation coefficient for both methods was 0.89. Discrepancies were found most frequently in nodules near to pulmonary vessels. Nodule size estimation did not differ more than one size category. Eight spiculated nodules were identified by both techniques. Low-dose spiral CT of the chest has a high sensitivity in the detection of pulmonary nodules. If clinical circumstances require dose minimization, low-dose spiral CT may be advocated as an alternative screening method to conventional dose spiral CT.

Key words: Lung Nodule CT Technology 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • M. Gartenschläger
    • 1
  • F. Schweden
    • 1
  • K. Gast
    • 1
  • T. Westermeier
    • 2
  • H.-U. Kauczor
    • 1
  • H. von Zitzewitz
    • 1
  • M. Thelen
    • 1
  1. 1.Department of Diagnostic Radiology, J. Gutenberg University, University Hospital, Langenbeckstrasse 1, D-55 131 Mainz, GermanyDE
  2. 2.Medical Statistics and Documentation, J. Gutenberg University, University Hospital, Langenbeckstrasse 1, D-55 131 Mainz, GermanyDE

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