CAJ | 학술논문

目的：定量评价双源双能量 CT 非线性融合图像处理技术对肺动脉图像质量影响。方法回顾性分析27例肺动脉栓塞患者100 kV(A 组)、140 kV(B 组)、非线性融合(C 组)3组图像,分别测量3组图像中肺动脉栓子的 CT 值、标准差及邻近血管 CT值,并计算对比噪声比(CNR)及信噪比(SNR),进行统计学分析。结果对27例肺栓塞患者栓子定量分析结果显示,3组间栓子CT 值比较差异无统计学意义(P >0.05)；从噪声、CNR、SNR 3方面比较发现,C 组与 A 组、B 组差异均有统计学意义(P <0.05)。结论非线性融合技术在提高图像信噪比方面具有一定优势,可用于临床可疑肺栓塞患者 CT 肺动脉成像的检查中。
목적：정량평개쌍원쌍능량 CT 비선성융합도상처리기술대폐동맥도상질량영향。방법회고성분석27례폐동맥전새환자100 kV(A 조)、140 kV(B 조)、비선성융합(C 조)3조도상,분별측량3조도상중폐동맥전자적 CT 치、표준차급린근혈관 CT치,병계산대비조성비(CNR)급신조비(SNR),진행통계학분석。결과대27례폐전새환자전자정량분석결과현시,3조간전자CT 치비교차이무통계학의의(P >0.05)；종조성、CNR、SNR 3방면비교발현,C 조여 A 조、B 조차이균유통계학의의(P <0.05)。결론비선성융합기술재제고도상신조비방면구유일정우세,가용우림상가의폐전새환자 CT 폐동맥성상적검사중。
Objective To evaluate the effect of non-linear blending function for dual-energy CT on image of pulmonary angiogra-phy.Methods 27 patients underwent dual energy CT pulmonary angiography(CTPA).Data obtained with 100 kVp,140kVp,and non-linear blending were divided into group A,B,and C respectively.CT value of emboli were measured.Corresponding signal to noise ratio(SNR )and contrast to noise ratio(CNR)were calculated.One-way Anova analysis and Friedman test were used to ana-lyze statistical significance among these values.Results On quantitative analysis of 27 patients,there was no statistical difference for CT value of CTPA among the three groups(P >0.05).For the noise,CNR and SNR,there were statistically significant among the three groups(P <0.05).Conclusion The non-linear blending function has certain advantages in improved image signal-to-noise ratio and it can be used in CT pulmonary angiography examination for patients suspected pulmonary embolism clinically .