CAJ | 학술논문

目的探讨双源CT单能谱成像技术在正确评估金属(不锈钢)植入物周围组织CT值中的应用.方法对含有金属植入物的水模体使用双源CT双能量扫描,采用双能量扫描程序,一次性扫描采集2个不同能量(80 kV及140 kV)的数据,采用单能谱成像技术对所得原始数据进行处理,得到融合后图像.对金属植入物周围的水进行CT值测量和统计分析.结果 3种图像(80 kVCT图像、140 kV CT图像、能谱融合图像)中,能谱融合图像的质量最高,140 kV CT图像次之,80 kVCT图像最差.用SAS9.1软件分别比较80 kV CT图像和140 kV CT图像与能谱融合图像沿着金属植入物右侧方向0.1、0.5、1.0、1.5、2.0、2.5、3.0 cm的CT值,结果发现它们之间的差异基本上都有统计学意义.结论双源CT单能谱成像技术改善了金属植入物植入后CT检查的图像质量.
목적 탐토쌍원CT단능보성상기술재정학평고금속(불수강)식입물주위조직CT치중적응용.방법 대함유금속식입물적수모체사용쌍원CT쌍능량소묘,채용쌍능량소묘정서,일차성소묘채집2개불동능량(80 kV급140 kV)적수거,채용단능보성상기술대소득원시수거진행처리,득도융합후도상.대금속식입물주위적수진행CT치측량화통계분석.결과 3충도상(80 kVCT도상、140 kV CT도상、능보융합도상)중,능보융합도상적질량최고,140 kV CT도상차지,80 kVCT도상최차.용SAS9.1연건분별비교80 kV CT도상화140 kV CT도상여능보융합도상연착금속식입물우측방향0.1、0.5、1.0、1.5、2.0、2.5、3.0 cm적CT치,결과발현타문지간적차이기본상도유통계학의의.결론 쌍원CT단능보성상기술개선료금속식입물식입후CT검사적도상질량.
Objective To evaluate monoenergetic imaging of dual energy CT in the visualization of metal implants(stainless steel implants).Methods Two different data(80 and 140 kV)ofwater phantom which contained metal implants were collected in one-time scanning using dual-energy scanning sequence.Monoenergetic technique which two different imaging at 80 kV and 140 kV were used for subtraction to removing metal artifacts was applied to generate the new imaging.The CT value of water surrounding metal implants were measured and compared.Results In the three images (80 kV,140 kV,spectrum image fusion),the latter quality is the highest and the 80 kV scanning images' quality was the worst.The difference between CT values of 80 kV images (140 kV images) and energy spectrum images along the right direction 0.1,0.5,1,1.5,2.0,2.5,3.0 cm of the metal basically was significant assessed by the SAS9.1 software.Conclusions Dual energy CT can effectively reduce artifacts of metal implants and will provide high image quality in the area with metal implants.