PET-CT中诊断性CT的必要性与临床应用  

Necessity and clinical application of diagnostic CT in PET-CT scanner

作　　者：季仲友[1] 

机构地区：[1]福建医科大学附属协和医院放射诊疗中心PET/CT室,福州350001

出　　处：《国外医学（放射医学核医学分册）》2005年第5期197-200,共4页Foreign Medical Sciences(Section of Radiation Medicine and Nuclear Medicine)

摘　　要：PET在肿瘤的诊断、分期、再分期、疗效监测及心肌存活评价等方面具有重要价值,但也存在18F-氟代脱氧葡萄糖(18F-FDG)PET的假阳性、假阴性诊断,导致特异性不高。诊断性CT的应用,尤其是CT增强扫描、三维技术、CT血管造影、CT灌注、CT仿真内窥镜的应用,使PET-CT影像中的PET与CT影像达到优势互补,成为复合影像诊断技术,在临床应用中提高了PET-CT诊断的敏感性、特异性和准确性。PET scanning has a definite clinical impact on diagnosis, initial staging, restaging, monitoring therapeutic effects of malignancies, and on assessment of myocardial viability. Whereas, PET scans has false positive diagnosis and false negative diagnosis of malignant lesions, It leads to reduce specifity in PET imaging. Application of diagnostic CT, especially applying contrast enhanced CT scans, three dimensional technique, CTA（CT angiography）, CT perfusion and CT virtual endoscopy can realize dominance complementation with PET and CT, PET-CT imaging diagnosis combines with PET and CT diagnostic technique, It improves sensitivity, specifity, and accuracy in clinical application of PET-CT scanner.

关 键 词：正电子发射体层显像 计算机体层成像 临床肿瘤学 诊断 18F-氟代脱氧葡萄糖 

分 类 号：R730.4[医药卫生—肿瘤]