目的 探讨FORCE CT实时迭代ADMIRE重建技术在肝脏CT扫描中的应用价值。方法 临床疑肝病患者50例,行FORCE CT肝脏平扫后,分别采用FBP重建和ADMIRE-1~5级重建,比较6组图像的平均CT值、噪声、SNR、CNR及图像质量的主观评分及诊断效能等。结果 比较6组图像显示,肝实质平均CT值无统计学差异(P>0.05);噪声、SNR、CNR及主观评分间均有差异(P<0.05),ADMIRE-5重建噪声最小、SNR、CNR最大。图像主观评分ADMIRE-1和ADMIRE-5图像评分低于FBP,ADMIRE-2~4高于FBP,绝对评分最高为ADMIRE-3重建,但六种重建图像对病变诊断效能一致。结论 肝脏CT平扫结合FORCE CT 实时迭代ADMIRE重建技术能有效降低图像噪声及提高图像质量,具有潜在降低扫描剂量的作用。

Objective: To discuss the value of ADMIRE reconstruction technique in the liver plain CT scan by the comparison of displays to the liver separately by ADMIRE and traditional FBP reconstructions after DSCT scan. Methods: 48 patients who were clinically doubted to have hepatic lesions were scanned by DSCT in liver, then six groups of images for FBP and ADMIRE 1-5 on the average CT value, noise, signal to noise ratio ( SNR ), contrast to noise ratio (CNR) and subjective scoring on image quality were compared. Results: 6 groups of images were compared,and the average CT value of liver parenchyma has no statistical differences (P>0.05);The differences were statistically significant (P<0.05)on noise, SNR, CNR and subjective scoring,ADMIRE5 reconstruction has the least noise and the largest SNR and CNR.For the images of ADMIRE1 and ADMIRE5, the image subjective scoring is lower than that by FBP; for the images of ADMIRE2 and ADMIRE4, the image subjective scoring is higher than that by FBP; and ADMIRE-3 has the highest score.But for the rate of lesion detection, all the images were the same. Conclusion: ADMIRE reconstruction strength 3 makes the best image quality.ADMIRE reconstruction can decrease noise and improve SNR and CNR,as well as have a potential effect decreasing the scan dose.