基于低剂量CT扫描策略行胸腹主动脉及肾动脉3D建模打印的可行性研究  

Feasibility Study of 3D Modeling and Printing of Thoracoabdominal Aorta and Renal Artery Based on Low Dose CT Scanning Strategy

作　　者：李冠 黄伟[1] 曹志强 王昊鹏 王金宝 董杰[2] LI Guan;HUANG Wei;CAO Zhiqiang;WANG Haopeng;WANG Jinbao;DONG Jie(Department of Medical Imaging,General Hospital of Eastern Theater Command,Nanjing Jiangsu 210002,China;Department of Urinary Surgery,General Hospital of Eastern Theater Command,Nanjing Jiangsu 210002,China;Severe Trauma Treatment Laboratory,General Hospital of Northern Theater Command,Shenyang Liaoning 110016,China;Department of Radiology,General Hospital of Northern Theater Command,Shenyang Liaoning 110016,China)

机构地区：[1]东部战区总医院(原南京军区南京总医院)医学影像科,江苏南京210002 [2]东部战区总医院原南京军区南京总医院泌尿外科,江苏南京210002 [3]北部战区总医院重症(战)创伤救治中心实验室,辽宁沈阳110016 [4]北部战区总医院放射诊断科,辽宁沈阳110016

出　　处：《中国医疗设备》2020年第5期101-104,共4页China Medical Devices

摘　　要：目的探讨低剂量CT扫描技术行胸腹主动脉及肾动脉3D建模打印的可行性。方法将40例临床拟行胸腹主动脉及肾动脉3D建模打印的患者,随机分为两组,每组20例。A组(低剂量)采用KV assist联合自动管电流调制技术及自适应统计迭代重建。B组(常规剂量)采用120 kVp,250 mA及滤波反投影重建。两组对比剂均采用320 mgI/mL。将两组的CTDICOM数据传至3D打印工作站行胸腹主动脉及肾动脉3D建模打印。比较两组患者的一般临床资料、CT剂量加权指数(CTDIvol)、剂量长度乘积(DLP)及有效辐射剂量(ED)。对两组的胸腹主动脉及肾动脉3D建模打印质量进行主观评价。结果两组患者的一般临床资料差异无统计学意义(P>0.05)。A组的CTDIvol、DLP及ED均低于B组(P<0.05)。A组ED值[(9.38±3.27)mSv]较B组ED值[(15.19±3.01)mSv]减少约38.2%。两组胸腹主动脉及肾动脉3D建模打印结果主观评分差异无统计学意义(P=0.752)。结论在行胸腹主动脉及肾动脉3D建模打印时,低剂量CT扫描技术生成的CT DICOM数据可在保证3D建模打印质量的情况下显著降低患者所受的辐射剂量。Objective To explore the feasibility of low-dose CT scanning for 3 D modeling and printing of thoracoabdominal aorta and renal artery.Methods A total of 40 patients with clinically planned underwent thoracoabdominal aortic and renal artery 3 D modeling print were randomly divided into two groups,20 in each group.In A group(low-dose protocol),KV assist combined with automatic tube current modulation technology and adaptive statistical iterative reconstruction were adopted.In B group(conventional dose protocol),120 kVp,250 mA and filtering back projection reconstruction were adopted.The contrast agent 320 mgI/mL was used in two groups.The CT DICOM data of the two groups were transmitted to the 3 D printing workstation for 3 D modeling printing of the thoracoabdominal aorta and renal artery.The clinical information,CTDIvol,DLP and ED were compared between the two groups.The subjective evaluation of thoracoabdominal aortic and renal artery 3 D modeling printing were completed.Results There was no significant difference in general clinical data between the two groups(P>0.05).The CTDIvol,DLP and ED in A group were lower than those in B group(P<0.05).The ED of A group[(9.38±3.27)mSv]was less than that of B group[(15.19±3.01)mSv]by approximately 38.2%(P<0.05).There was no difference in the subjective score between the two groups in thoracoabdominal aortic and renal artery 3 D modeling printing(P=0.752).Conclusion In 3 D modeling printing of thoracoabdominal aortic and renal artery,the data of CT DICOM generated by low-dose CT scanning technology can significantly reduce the radiation dose of patients while ensuring the quality of 3 D model printing.

关 键 词：3D建模打印 胸腹主动脉及肾动脉 低剂量CT 自适应统计迭代重建 

分 类 号：R318[医药卫生—生物医学工程] R814.42[医药卫生—基础医学]