CAJ | 학술논문

目的：研究影响PET/CT图像质量的因素，以充分理解获得高质量PET/CT图像的必要条件，指导临床工作。方法回顾性分析2013年7月～2014年7月我院1229例受检者的PET/CT扫描图像，并对影响图像质量的因素进行分类。结果影响PET/CT图像质量的因素有：①检查前的准备；②检查过程中患者自身的移位、呼吸运动伪影和高密度物质伪影、尿液污染；③采集时间和注射示踪剂的剂量；④注射技术；⑤不常见的生理性摄取（包括棕色脂肪摄取）。结论规范PET/CT扫描技术能提高PET/CT图像质量，为医生做出正确的诊断提供依据。
목적：연구영향PET/CT도상질량적인소，이충분리해획득고질량PET/CT도상적필요조건，지도림상공작。방법회고성분석2013년7월～2014년7월아원1229례수검자적PET/CT소묘도상，병대영향도상질량적인소진행분류。결과영향PET/CT도상질량적인소유：①검사전적준비；②검사과정중환자자신적이위、호흡운동위영화고밀도물질위영、뇨액오염；③채집시간화주사시종제적제량；④주사기술；⑤불상견적생이성섭취（포괄종색지방섭취）。결론규범PET/CT소묘기술능제고PET/CT도상질량，위의생주출정학적진단제공의거。
0bjective To study the influencing factors of PET/CT (Positron Emission Tomography/Computed Tomography) image quality so as to have an all-round understanding of the necessary conditions for acquisition of high-quality PET/CT images and provide guidance for clinical practices. Methods PET/CT images were retrospectively analyzed in 1229 patients who had been examined in July 2013 to July 2014 in the hospital. Additionally, the influencing factors of image quality were classified. Results The influencing factors of PET/CT image quality could be classified as five categories: a. pre-examination preparations; b. patients’position movement, respiratory motion artifacts and high-density material artifacts and urine pollution; c. the acquisition time and the injected tracer dose; d. The tracer injection technology; e. The infrequent physiological uptakes including brown fat uptakes. Conclusion Standardization of the PET/CT scanning technology could improve the quality of PET/CT images and provide foundation for doctors to make a correct diagnosis.