MRI检查图像患者骨盆倾斜情况:461例MRI图像分析  

Investigation and analysis of pelvic tilt in MRI examination

作　　者：陈兰[1] 陈春林[1] 刘萍[1] 冯婕[2] 苍鹏[2] 唐连 廖科丹[2] 王可竞 陈怡 CHEN Lan;CHEN Chunlin;LIU Ping;FENG Jie;CANG Peng;TANG Lian;LIAO Kedan;WANG Kejing;CHEN Yi(Department of Obstetrics and Gynecology;Department of Imaging,Nanfang Hospital of Southern Medical University,Guangzhou 510515,China)

机构地区：[1]南方医科大学南方医院妇产科,广东广州510515 [2]南方医科大学南方医院影像科,广东广州510515

出　　处：《分子影像学杂志》2018年第4期421-425,共5页Journal of Molecular Imaging

基　　金：国家自然科学基金(81370736;81571422);广东省教育厅高水平大学建设经费南方医科大学临床研究启动项目(LC2016ZD019)

摘　　要：目的探索MRI检查图像患者骨盆倾斜的情况。方法回顾性分析2013～2016年因各种妇科疾病行MRI检查的患者,构建骨盆三维模型,通过三维模型的正前面观判定患者骨盆位置是否有倾斜,在二维图像上测量倾斜的角度。结果在461例研究对象中,106例(23%)存在骨盆位置的倾斜,主要是左右倾斜,其中向右倾斜28例,偏转(6.28±2.14)°,向左倾斜有78例,偏转(5.88±1.67)°。结论常规MRI平卧位检查时存在骨盆倾斜的情况,导致患者正中矢状面选取存在偏差,利用正中矢状面进行的测量就存在偏差,引起骨盆左右倾斜的原因可能与骨盆旋转有关,而利用三维模型测量可以有效避免因骨盆偏斜引起的偏差。Objective To explore the pelvic tilt situation of patients who have done MRI examination. Methods Patients whohave performed MRI tests for various gynecological diseases from 2013 to 2016 were included. After we reconstructed 3Dmodel of patient＇s pelvis based on MRI images, frontal view of the three-dimensional model was used to determine whetherthe position of the pelvis was tilted or not. The angle of inclination was measured on the two-dimensional image. Results Inthe 461 subjects, 106 （23%） patients had a tilt pelvic position, mainly left-right tilt type. 28 ones were right tilt with averagedeflection of （6.28±2.14）°. 78 were leftward tilt with average deflection of （5.88±1.67）°. Conclusions The pelvic tilt in the cross-sectional view of the routine MRI supine test results in deviation of the median sagittal plane of the patient. The pelvic tilt mayresult from pelvic rotation. The use of three-dimensional model can effectively avoid bias due to pelvic tilt.

关 键 词：核磁共振 盆腔脏器脱垂 骨盆 倾斜 正中矢状面 三维模型 

分 类 号：R445.2[医药卫生—影像医学与核医学]