自主研发高分辨盆腔专用线圈在3.0 T磁共振设备成像价值的评估  

The application value of self-developed high-resolution pelvic-specific coil in 3.0 T MRI equipment

作　　者：王晓[1] 郑福玲[1] 陆晓平 李娟[1] 张鹏[1] 刘梦超 金川 张宏宇 王天娇 王沄[1] 薛华丹[1] WANG Xiao;ZHENG Fuling;LU Xiaoping;LI Juan;ZHANG Peng;LIU Mengchao;JIN Chuan;ZHANG Hongyu;WANG Tianjiao;WANG Yun;XUE Huadan(Department of Radiology,Peking Union Medical College Hospital,Chinese Academy of Medical Science and Peking Union Medical College,Beijing 100032,China)

机构地区：[1]中国医学科学院北京协和医学院北京协和医院放射科,北京100032

出　　处：《磁共振成像》2024年第1期158-162,178,共6页Chinese Journal of Magnetic Resonance Imaging

基　　金：中央高水平医院临床科研业务费项目(编号:2022-PUMCH-B-069)。

摘　　要：目的探讨自主研发的16通道高分辨盆腔专用线圈(16C)在3.0 T盆腔MRI中的应用价值。材料和方法前瞻性招募35例行盆腔MRI的患者,分别用16C线圈和32通道的体部线圈(32C)采集相同的轴位和矢状位T2WI序列。比较相同序列图像中第三骶椎、子宫肌层、前列腺外周带、直肠壁和闭孔内肌的信噪比(signal to noise ratio,SNR)及对比噪声比(contrast to noise ratio,CNR)。由两位诊断医师各自对两组图像质量和直肠轴位图像直肠壁分层结构的显示度进行主观评分。结果两组线圈相同序列的T2WI矢状位第三骶椎、子宫肌层、前列腺外周带和轴位闭孔内肌的SNR差异具有统计学意义(P<0.05),矢状位第三骶椎、子宫肌层和轴位直肠壁对肌肉的CNR差异具有统计学意义(P<0.05),16C组高于32C组。两组线圈相同序列的T2WI图像质量主观评价差异具有统计学意义(P<0.05),16C组图像质量更优。在轴位T2WI直肠壁分层结构的显示度评价方面两组图像差异具有统计学意义(P<0.05),16C组更优。结论16C线圈在3.0 T磁共振设备上成像质量更好,更有利于盆腔疾病的诊断。Objective:To explore the value of self-developed 16-channel high-resolution pelvic-specific coil(16C)in pelvic 3.0 T MRI.Methods and Materials:Thirty-five patients underwent routine pelvic MRI were prospectively included,and the same axial and sagittal T2WI sequences were acquired with a 16C coil and a 32-channel body coil(32C),respectively.Signal to noise ratio(SNR)and contrast to noise ratio(CNR)of the third sacral vertebrae,myometrium,peripheral band of prostate,rectal wall,and internal obturator muscle were compared between images of the same sequences acquired with the two coils.Qualitative image quality and rectal wall depiction were evaluated by two radiologists for both groups.Results:Compared with 32C,SNR of third sacral vertebrae,myometrium,peripheral band of the prostate on T2WI sagittal images,SNR of intraocclusal muscle on T2WI axial images,CNR of third sacral vertebrae,myometrium on T2WI sagittal images and CNR of rectal wall on T2WI axial images were all higher,and all difference were statistically significant(P<0.05).Rectal wall depiction on T2WI axial images and all qualitative image quality were better in 16C group than that of 32C group(P<0.05).Conclusions:Compared with conventional 32C coils,images acquired with 16C coils have better imaging quality and diagnostic confidence.

关 键 词：磁共振成像 线圈 信噪比 对比噪声比 图像质量 

分 类 号：R445.2[医药卫生—影像医学与核医学]