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Published online before print September 19, 2002, 10.1148/radiol.2252011568

(Radiology 2002;225:575.)

A more recent version of this article appeared on November 1, 2002
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© RSNA, 2002

Technical Developments

PET Diagnostic Accuracy: Improvement with In-Line PET-CT System: Initial Results1

Thomas F. Hany, MD, Hans C. Steinert, MD, Gerhard W. Goerres, MD, Alfred Buck, MD and Gustav K. von Schulthess, MD, PhD

1 From the Department of Medical Radiology, Division of Nuclear Medicine, University Hospital Zurich, Rämistrasse 100, 8091 Zurich, Switzerland. Received September 21, 2001; revision requested December 3; final revision received March 14, 2002; accepted April 10. Supported in part by GE Medical Systems, Buc, France, and the Radium Foundation, University of Zurich, Switzerland. Address correspondence to T.F.H. (e-mail: thomas.hany@dmr.usz.ch).

The authors describe the initial application for tumor staging with an in-line system with a positron emission tomographic (PET) scanner and a multi–detector row helical computed tomographic (CT) scanner combined in one machine. Fifty-three patients underwent imaging with four CT tube currents and PET emission and transmission data acquisition. Stepwise analysis of coregistered images revealed a significant (P < .05, McNemar test) improvement in lesion classification between PET images alone and coregistered images from the PET-CT examination.

© RSNA, 2002

Index terms: Computed tomography (CT), helical, 20.12115, 60.12115, 70.12115 • Data fusion, 20.12115, 20.12163, 60.12115, 60.12163, 70.12115, 70.12163 • Images, fusion, 20.12115, 20.12163, 60.12115, 60.12163, 70.12115, 70.12163




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