摘要
目的:探讨自动管电流调节(CARE Dose 4D)联合智能最佳kV(CARE kV)技术在眼眶CT检查中的临床应用价值。方法:将行眼眶CT检查的70例患者分为两组,A组(35例)采用CARE Dose 4D扫描技术,B组(35例)采用CARE kV联合CARE Dose 4D扫描技术。比较A、B两组图像质量(平均CT值、噪声SD、SNR、CNR、图像质量主观评分)、患者所接受的辐射剂量及病变检出率。结果:A、B两组辐射剂量差异有统计学意义(P<0.05),B组[(0.59±1.55)mSv]较A组[(0.71±1.84)mSv]ED较少约15.9%。两组平均CT值、噪声SD、SNR、CNR、图像质量评分及病变检出率差异均无统计学意义(P>0.05)。结论:联合CARE kV与CARE Dose 4D技术行眼眶CT扫描,在保证图像质量的同时,可有效降低辐射剂量。
To explore the clinical application value of CARE Dose 4D （tube current regulation technique） combined with CARE kV （the smart kV scanning technology）in orbital CT scan,expecting to reduce the radiation dose. Methods：70 patients underwent plain orbital CT scan,they were randomly divided into two groups according to chronologi-cal sequence.In group A （n=35 cases）,applied CARE Dose 4D technique was used only;In group B （n=35 cases）,applied both CARE Dose 4D and CARE kV technique was used.Comparison of radiation dose and image quality （based on average CT values,Noise SD,SNR,CNR and quality score）between the two groups were made.Results：The difference of radiation dose between the two groups was statistically significant （P〈0.05）;ED of group B was less than those of group A by a-round 16.9%.There were no significant differences between the two groups in average CT values,SD,SNR and CNR （P〉0.05）;Also the image quality score and lesion detection rate demonstrated no significant difference among the two groups. Conclusion：On the premise of obtaining good quality of image for diagnosis,CARE kV combined with CARE Dose 4D tech-nology can be applied in orbital CT scan,which will reduce about 15.9% radiation dose.
出处
《放射学实践》
2014年第9期1035-1038,共4页
Radiologic Practice
