两种回波扩散加权成像方法在鞍区病变磁共振成像扫描中的应用价值比较  

Application value comparison of two echo diffusionweighted imaging methods in MRI scanning of sellar lesions

作　　者：刘逵 徐帆 Liu Kui;Xu Fan(Department of Radiology,Henan Xinhe Hospital,Xinyang 465200,China)

机构地区：[1]河南信合医院放射科,信阳465200

出　　处：《实用医技杂志》2024年第6期419-422,共4页Journal of Practical Medical Techniques

摘　　要：目的探讨分段读出平面回波扩散加权成像(RESOLVEDWI)与刀锋技术快速梯度自旋回波扩散加权成像(TGSEBLADEDWI)用于鞍区病变扫描图像质量差异。方法本研究为回顾性研究,纳入我院2020年1月至2022年6月收治鞍区病变患者83例,均在常规核磁基础上行RESOLVEDWI与TGSEBLADEDWI扫描,比较2种回波扩散加权成像用于鞍区病变扫描图像质量主客观评价指标,并分析主观指标评价一致性。结果2名放射学专业人员对于RESOLVEDWI与TGSEBLADEDWI扫描图像质量主观评分具有高度一致性,Kappa值分别为0.73~1.00,0.72~0.98。TGSEBLADEDWI扫描鞍区正常结构、磁敏感伪影、失真变形、清晰度及整体图像质量主观评分均高于RESOLVEDWI(Z=-3.035、-5.035、-6.117、-5.361、-4.587、-3.358、-4.035、-5.125,P均<0.001)。TGSEBLADEDWI扫描鞍区病变最大纵径和最大横径均显著少于RESOLVEDWI(t=3.608、4.702,P均<0.001)。结论相较于RESOLVEDWI,TGSEBLADEDWI可有效改善鞍区病变扫描图像质量,在减少失真变形、提高图像清晰度、准确显示病变及周围正常结构方面具有明显优势。Objective To investigate the application differences of readout segmentation of long variable echo trains and turbo gradient and spin echo BLADE diffusion weighted imaging in scanning of sellar lesions.Methods Eightythree patients with sellar lesions were retrospectively chosen in the period from January 2020 to June 2022 in our hospital and the segmented readout plane and the knifeedge technique were scanned by fast gradient spin echo diffusion weighted imaging on the basis of conventional MR.The subjective and objective evaluation indexes of image quality of sellar lesions using two kinds of echo diffusion weighted imaging were compared and then the consistency of subjective indexes was analyzed.Results There was high degree of consistency in the subjective scores of the scanning image quality of the segmented readout plane and the blade technique between two professional radiologists,with Kappa values of 0.73,1.00 and 0.72,0.98,respectively.The subjective scores of normal structure,sensitivity artifact,distortion,sharpness and overall image quality in the sellar region scanned by turbo gradient and spin echo BLADE diffusion weighted imaging with blade technique were significantly higher than those of readout segmentation of long variable echo trains diffusion weighted imaging(Z=-3.035,-5.035,-6.117,-5.361,-4.587,-3.358,-4.035,-5.125,all P<0.001).The maximum longitudinal and transverse diameters of sellar lesions detected by turbo gradient and spin echo BLADE diffusion weighted imaging were significantly less than those detected by readout segmentation of long variable echo trains diffusion weighted imaging(t=3.608、4.702,all P<0.001).Conclusion Compared with readout segmentation of long variable echo trains,turbo gradient and spin echo BLADE diffusion weighted imaging in scanning of sellar lesions can effectively improve the scanning image quality of sellar lesions,and has obvious advantages in reducing distortion,improving image sharpness,and accurately displaying the lesions and surrounding normal structure

关 键 词：磁共振成像 蝶鞍 弥散加权成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R739.4[医药卫生—诊断学]