| 马文灿,陶晓飞,丁智超,等.低剂量自适应迭代重建技术在颅面部联合外伤 CT检查中应用[J].安徽医药,2023,27(7):1349-1353. |
| 低剂量自适应迭代重建技术在颅面部联合外伤 CT检查中应用 |
| Application of low-dose adaptive iterative reconstruction technique in combined craniofacial trauma CT examinations |
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| DOI：10.3969/j.issn.1009-6469.2023.07.016 |
| 中文关键词: 头部损伤，闭合性 头部损伤，穿透性 体层摄影术， X线计算机( CT) 自适应迭代重建技术 低剂量 颅面部联合外伤 |
| 英文关键词: Head injuries, closed Head injuries,penetrating Tomography,X-ray computed(CT) Adaptive iterative reconstruction technique Low dose Combined craniofacial trauma |
| 基金项目:承德市科学技术课题项目( 202109A181) |
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| 中文摘要: |
| 目的探讨低剂量自适应迭代重建技术在颅面部联合外伤 CT检查中应用。方法选取 2019年 2月至 2021年 12月承德市中心医院收治的 180例颅面部联合外伤病人，均行常规剂量 CT扫描［常规组，最佳噪声指数( noise index，NI)结合 30%自适应迭代重建］在复查 CT(与初次扫描间隔 <24 h)中按照随机数字表法将病人按照 1∶1∶1均分为 A组(n=60，NI25结合 40%自适应迭代重建)、 B，组( n=60，NI30结合 50%自适应迭代重建)、 C组( n=60，NI35结合 60%自适应迭代重建)均使用同一设备进行扫描。比较各组扫描时间、受检者剂量容积指数( CT dose index of volume，CTDIvol)、扫描长度( length，L，)、剂量长度乘积(dose length product，DLP)、有效剂量( effective dose，ED)、对比信噪比( compare signal-to-noise ratio，CNR)、信噪比( signal-tonoise ratio，SNR)、图像质量主观评价效果。结果扫描时间: C组A组>B组>C组，两两比较均差异有统计学意义( P<0.05)； SNR:常规组 >A组>B组>C组，两两比较均差异有统计学意义( P<0.05)； A组( 98.33%)、 B组( 96.67%)满意率与常规组( 100.00%)比较，差异无统计学意义( P>0.008)； C组满意率( 88.33%)低于常规组( 100.00%)(P<0.008)。结论 CT扫描中， NI30结合 50%自适应迭代重建能满足高质量图像和低辐射剂量的双重要求，可作为颅面部联合外伤的一个最佳诊断参数组合。 |
| 英文摘要: |
| Objective To investigate the application of low-dose adaptive iterative reconstruction techniques in combined craniofacial trauma CT examinations.Methods A total of 180 patients with combined craniofacial trauma who were treated in Chengde Central Hospital from February 2019 to December 2021 were selected and underwent conventional dose CT scans [(conventional group, optimal noiseindex (NI) combined with 30 % adaptive iterative reconstruction)], in the re-examination CT (with an interval of less than 24 h from the initial scan), the patients were equally divided into group A (n=60, NI25 combined with 40 % adaptive iterative reconstruction), group B (n= 60, NI30 combined with 50 % adaptive iterative reconstruction), group C (n=60, NI35 combined with 60 % adaptive iterative reconstruction), all were scanned with the same equipment. The scan time, subject dose volume index (CTDIvol), scan length (L), dose length product (DLP), effective dose (ED), contrast signal-to-noise ratio (CNR), signal-to-noise ratio (SNR), subjective evaluation of image quality were compared.Results Scanning time: group C < group A and routine group < group B, the difference was statistically significant (P < 0.05); CTDIvol, DLP, ED: routine group > group A > group B > group C, the difference between the two comparisons was statistically significant (P<0.05); SNR: conventional group > group A > group B > group C, the difference was statistically significant (P < 0.05); Group A(98.33 %), Compared with the conventional group (100.00 %), the satisfaction rate of group B (96.67 %) was not significantly different (P> 0.008); the satisfaction rate of group C (88.33 %) was lower than that of the conventional group (100.00 %) (P<0.008).Conclusion In CT scanning, NI30 combined with 50 % adaptive iterative reconstruction can meet the dual requirements of high quality image and low radiation dose, and can be used as an optimal combination of diagnostic parameters for craniofacial combined trauma. |
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