الفهرس 
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Abstract
PET/CT is superior to PET and CT alone, and/or magnetic resonance
imaging (MRI), in the diagnosis and treatment of various primary or
metastatic cancers.
Dual modality PET/CT scanning provides accurately fused
morphologic (CT) and functional (PET) data sets. A very small tumor is well
detected by PET but can be missed by CT. On the other hand, a large tumor
with minimal functional deviations may be seen on a CT image, but may not
be detected by PET. In both situations, PET/CT would localize the tumor
accurately. Thus, PET/CT is a more accurate test than either of its individual
components.
PET/CT has advantages over other imaging methods; it can
differentiate benign from malignant lesions, staging and restaging tumors,
detect functional changes before there is any change in clinical or
radiological size of a mass, better in identifying cancer that has spread,
making up treatment plan and monitoring tumor response, distinguish viable
metabolically active tissue from scars, and it is indicated for restaging in
patients with suspected recurrent and metastatic disease.
Key words :
PET CT - Hepatitis C Virus - Aflatoxin B .