摘要
目的对比电影体积渲染技术(cinematic volume rendering technique,CVRT)与最大密度投影(maximum intensity projection,MIP)在腰骶丛神经鞘瘤成像中的可视化表现差异,并基于结果进一步探讨CVRT在术前肿瘤评估、制订治疗方案和减少术中损伤中的临床应用潜力。材料与方法回顾性分析33例腰骶丛神经鞘瘤患者的临床及影像资料,所有患者均进行了增强后的三维快速自旋回波短时翻转恢复序列成像(three-dimensional fast spin-echo short-time flip recovery sequence imaging,3D-STIR-SPACE)检查。以3D-STIR-SPACE图像作为原始图像,分别进行MIP和CVRT处理。两位研究者使用4点李克特量表法来评估的MIP图像和CVRT图像的整体图像质量(overall image quality,OIQ),腰骶丛神经(lumbosacral plexus,LSP)与肿瘤显示清晰度(Sharpness),LSP与肿瘤空间位置分辨率(Resolution)及图像诊断置信度(diagnostic confidence level,DCL)。采用非参数Wilcoxon符号秩和检验对MIP和CVRT图像的影像表现得分进行统计分析。使用组内相关系数(intra-class correlation coefficient,ICC)分别评估CVRT和MIP两种方法在判断肿瘤的大小、位置,以及其和LSP的关系方面时与手术结果的一致性。结果与MIP图像相比,CVRT图像得到了优秀的图像质量、LSP与肿瘤显示清晰度和空间位置分辨率,以及非常高的DCL,两组间差异均具有统计学意义(P<0.05)。在一致性分析方面,CVRT图像也展现了高于MIP图像的研究者间ICC值(CVRT:ICC=0.929~0.957;MIP:ICC=0.878~0.922)。基于CVRT图像在肿瘤大小、位置及与LSP关系方面分析得出的结果与手术结果的一致性不低于MIP图像分析所得的结果(CVRT vs.MIP,ICC值:0.988 vs.0.969、1.000 vs.1.000、0.943 vs.0.807)。结论与MIP对比,CVRT可以更清晰地展示肿瘤与腰骶丛神经的解剖关系,可以为临床诊断和治疗提供更多的影像学信息。
Objective:To comparatively analyze the visualization differences between cinematic volume rendering technique(CVRT)and maximum intensity projection(MIP)in imaging lumbosacral plexus nerve sheath tumors,and further explore the clinical potential of CVRT in preoperative tumor assessment,treatment planning,and intraoperative injury reduction.Materials and Methods:Retrospective analysis of 33 patients with lumbosacral plexus nerve sheath tumors,and all of them underwent three-dimensional fast spin echo short-time flip recovery sequence imaging(3D-STIR-SPACE)after enhancement.3D-STIR-SPACE images were used as the original images,and were processed by maximum density projection MIP and CVRT,respectively.Overall image quality(OIQ),lumbosacral plexus(LSP)versus tumor display sharpness,LSP versus tumor spatial location resolution,and image diagnostic confidence level(DCL)of MIP and CVRT images were evaluated using a 4-point scale by two investigators.The performance scores of MIP and CVRT images were statistically analyzed using the non-parametric Wilcoxon signed rank test.The intra-class correlation coefficient(ICC)was used to assess the agreement between the two methods,CVRT and MIP,respectively,and the surgical results in determining the size and location of the tumor and its relationship with the LSP.Results:Compared with MIP images,CVRT images obtained superior image quality,LSP with tumor display clarity and spatial location resolution,and very high diagnostic confidence,and both were significantly different(P<0.05).In the consistency analysis,CVRT images exhibited ICC values that were comparable to those of MIP images(CVRT:ICC=0.929 to 0.957;MIP:ICC=0.878 to 0.922).The consistency between the results derived from CVRT image analysis and the surgical outcomes was at least equivalent to or better than that obtained from MIP image analysis(CVRT vs.MIP,ICC values:0.988 vs.0.969,1.000 vs.1.000,0.943 vs.0.807).Conclusions:Compared with MIP,CVRT provides a clearer depiction of the anatomical relationship between the tumor and the lumbosacral plexus nerve,providing more imaging information for clinical diagnosis and treatment.
作者
刘晨晨
冉云彩
陈锐
王梦珠
来阳
张勇
程敬亮
白洁
LIU Chenchen;RAN Yuncai;CHEN Rui;WANG Mengzhu;LAI Yang;ZHANG Yong;CHENG Jingliang;BAI Jie(Department of MRI,the First Affiliated Hospital of Zhengzhou University,Zhengzhou 450002,China;Siemens Healthineers Ltd.,Beijing 100102,China)
出处
《磁共振成像》
北大核心
2025年第7期47-51,57,共6页
Chinese Journal of Magnetic Resonance Imaging
基金
河南省高等学校重点科研项目(编号:23B320010)。
关键词
电影体积渲染技术
腰骶丛神经鞘瘤
最大密度投影
磁共振成像
cinematic volume rendering technique
lumbosacral plexus nerve sheath tumors
maximum intensity projection
magnetic resonance imaging
