Comparative Assessment of Different Energy Mapping Methods in CT-based Attenuation Correction in PET/CT Systems Using Whole Body XCAT Phantom

AbstractThis paper presents the result of assessing different attenuation correction methods for PET data according to CT data (CTAC). These methods are intended for use with a combined PET/CT scanner. We discuss five possible methods of energy mapping from the CT energies to the required 511keV. CT images are obtained using a computerized whole body phantom, 4DXCAT, which is simulation of physically and anatomically of human body