CT Attenuation Correction in PET/CT Image Fusion
نویسنده
چکیده
This paper presents the results of evaluating the use of X-ray CT data for attenuation correction of PET data. This method of attenuation correction is intended for use with a combined volume-imaging PET/CT scanner for oncology. We discuss four possible methods of scaling the attenuation map from the CT energies to the required PET attenuation map at 511 keV. Results are presented on the testing of these methods by phantom studies with regions of different densities. We show that the hybrid method and hybrid dual-energy method provide better results for the reconstructed PET emission scan for bone structure and/or CT contract.
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