Clinical Diagnosis of Various Cancer Patients using PET/CT Fusion Imaging Techniques

Many types of cancers begin because of out of control growth of abnormal body cells and it is named for the site where it get started and spread. Growing rate of these cells is different and they are diagnosed as well as treated differently. Positron Emission Tomography (PET-Radio tracer) and Computed Tomography (CT) are two different diagnostic modalities in which PET provides, functional and physiological computer generated images obtained from a detection of photon annihilated radionuclide 18F-FDG (Fluro deoxy glucose- radioactive tracer), i.e., distributed in tissues, decays in the body to release positrons where as CT provides morphological, anatomical information that uses X-ray beam which helps in determing site with extent of malignancies. Thus, combined PET/CT modality provides metabolic functions and anatomical functions in single detection of whole body. This paper describes various image processing application techniques that are introduced and developed to minimize artifacts and enhance the required feathers for correct diagnosing which will help the radiologist as well as the physician to decide the way of treatment with medications for curing cancer patients