Comparative Analysis Of PET/CT Vs. CT Scan On The Diagnosis Of Non-small Cell Lung Cancer

[Objective]To explore the diagnostic value of dual-modality positron emission tomographic -computed tomographic (PET/CT) imaging, as compared with that of CT alone on the diagnosis of non-small cell lung cancer (NSCLC) and metastasis. [Materials and Methods]During 2003 to December 2005, 56 cases of non-small cell lung cancer were proved by surgery, biopsy, pathology or follow-up. Metastsis tumor, tumors after chemo-therapy or radio-therapy or after operation were not included. All cases were examined by PET/CT and CT. All those patients underwent conventional thoracic CT before PET/CT imaging, and when necessary enhanced CT and high resolution CT of local pulmonary lesion is available. Abdominal and head CT scan was adopted when there was corresponding symptom in the patients. 56 cases were proved to be NSCLC (including 15 adenocarcinoma, 28 squamous carcinoma, 5 adenosquamous carcinoma, 8 large cell carcinoma). There were two diagnostic groups (group A and groud B). Two doctors specified in image attend in every group. Parts of the primary focus or metastasis focus were certified by operation, acupuncture or biopsy by bronchus celoscope. Parts of them were certified by follow-up or examination of the cell of hydrothorax. In group A, CT scan images were checked and data of CT scan image...