The Comparison of Computed Tomography Perfusion, Contrast Enhanced Computed Tomography and Positron Emission Tomography/Computed Tomography for detection of Primary XXXX .

@entity1 @entity5 @entity419 @entity418
OBJECTIVE: The purpose of this study was to investigate the efficiency of computed tomographic perfusion (CTP), contrast enhanced computed tomography (CECT) and @entity419 position emission tomography (PET/CT) in the diagnosis of @entity418 . SUBJECTS AND METHODS: This prospective study consisted of 33 @entity1 with pathologically confirmed @entity418 of which and 2 had esophageal abscess. All the @entity1 underwent CTP, CECT and PET/CT imaging and the imaging findings were evaluated. Sensitivity, specificity, positive predictive and negative predictive values were calculated for each of the three imaging modalities relative to the histological diagnosis. RESULTS: Thirty three @entity5 were visualized on CTP; on CECT:29, on PET/CT:27. Six @entity5 were stage 1 and the two and four @entity5 missed by CECT and PET/CT, respectively. The significant differences were between the CTP and CECT (p:0.02), and CTP and PET/CT (p:0.04), for stage 1 @entity5 were found. Sensitivity, specificity, positive predictive. Corresponding values for and negative predictive value of CTP were 100%,100%,100% and 100% respectively. Corresponding values for CECT were 93.94%, 0%, 93.94% and 0% respectively, and those of PET/CT were 87.88%, 0%, 93.55% and 0% respectively. Hence the sensitivity, specificity, positive predictive and negative predictive values of CTP were better than those of CECT and PET/CT. CONCLUSION: The CTP had an advantage over CECT and PET/CT in the detecting small lesions. The CTP was valuable especially in stage 1 @entity5 .
