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Can PET/CT Replace Separate Diagnostic CT for Cancer Imaging? Optimizing CT Protocols for Imaging Cancers of the Chest and Abdomen

¹ Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany; and ² Department of Nuclear Medicine, University Hospital Essen, Essen, Germany

Correspondence: For correspondence or reprints contact: Gerald Antoch, MD, Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstrasse 55, D-45122 Essen, Germany. E-mail: gerald.antoch{at}uni-essen.de

Stage-adapted treatment in oncology relies on correct tumor staging for patients with malignant diseases. To ensure accurate assessment of the tumor stage in thoracic and abdominal diseases by PET/CT, both CT and PET need to be optimized. In this setting, different malignant diseases require customized imaging protocols. Although in the clinical setting of therapy assessment, PET/CT with integration of low-dose, nonenhanced CT may be sufficient, tumor staging may require a more sophisticated CT protocol. This review focuses on potential CT protocols for imaging cancers of the chest and abdomen. Examples of CT protocols are presented and discussed for non–small cell lung cancer, breast cancer, colorectal cancer, gastrointestinal stromal tumors, and interventional liver therapy.

Key Words: PET/CT • contrast material • imaging protocols • chest • abdomen

COPYRIGHT © 2006 by the Society of Nuclear Medicine, Inc.

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