246.Sacral and iliac insufficiency fractures(骶椎、髂骨机能不全性骨折)
每天朗读一段医学影像学英语文章
【Sacral and iliac insufficiency fractures 骶椎、髂骨机能不全性骨折】
MRI images should be obtained in the axial (Fig 1 and Fig 2) and coronal (Fig 3) planes. Conventional T1- and T2-weighted sequences are usually adequate for diagnosis. However, STIR or fat suppressed fast spin-echo images can be used instead of T2-weighted sequences. We find fat suppression techniques useful, because of the inhomogeneous appearance of yellow and red marrow in the pelvis.
MRI应行轴位和冠状位摄片,常规T1、T2序列足以明确诊断。压脂或快速自旋回波压脂序列也可以代替T2加权序列。压脂序列有助于诊断是因为骨盆的红骨髓和黄骨髓显示不均。
Insufficiency fractures in the sacrum and ilium are low intensity on T1-weighted images. The pattern is typically linear. T2-weighted images may be more confusing due to a combination of high intensity edema and low intensity reparative bone or compressed trabeculae (Fig 3).
骶骨和髂骨的机能不全性骨折T1呈低信号。典型表现为线样骨折。T2上,由于骨髓水肿高信号,新生骨或骨小梁受压的低信号,常呈混杂信号。
Notes:
1. Sacral ['seɪkrəl] adj. 骶椎
2. iliac ['ɪlɪˌæk] adj. 髂骨的
3. inhomogeneous [ˌɪnhoʊmə'dʒi:nɪrs] adj. 非均匀
4. reparative ['repərətɪv] adj. 修缮的,赔偿的,弥补的
5. trabeculae [trə'bekjələ] n. 小梁
来源:每天朗读一段医学影像学英语文章
圈主
深圳市人民医院放射科副主任医师杨敏洁