使用二维和三维MRI序列组合对小儿脑肿瘤的滴状转移进行放射学诊断。
Radiological diagnosis of drop metastases from paediatric brain tumours using combination of 2D and 3D MRI sequences.
作者信息
Kralik S F, O'Neill D P, Kamer A P, Rodriguez E, Ho C Y
机构信息
Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN, USA.
Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN, USA.
出版信息
Clin Radiol. 2017 Oct;72(10):902.e13-902.e19. doi: 10.1016/j.crad.2017.04.016. Epub 2017 May 22.
AIM
To evaluate spinal magnetic resonance imaging (MRI) examinations using a combination of two-dimensional (2D) and three-dimensional (3D) MRI sequences for diagnosis of drop metastases.
MATERIALS AND METHODS
Fifty-five paediatric patients with primary brain tumours were evaluated for drop metastases at initial presentation using spinal MRI including sagittal 2D T1-weighted (W) contrast-enhanced (+C), axial 3D T1W+C volumetric interpolated breath-hold (VIBE), and sagittal 3D T2W SPACE (Sampling Perfection with Application optimised Contrasts using different flip angle Evolutions).
RESULTS
The MRI false-negative rate was 4%, and cerebrospinal fluid (CSF) false-negative rate was 16% (p=0.07). The 3D T1W+C VIBE increased the number of drop metastases detected in 42% of patients. Drop metastases were more conspicuous in 25% of patients on 3D T2W SPACE.
CONCLUSION
Spinal MRI examinations including 2D and 3D sequences demonstrate characteristics that may improve radiological diagnosis of drop metastases.
目的
评估使用二维（2D）和三维（3D）磁共振成像（MRI）序列组合进行脊柱磁共振成像检查以诊断播散性转移瘤。
材料与方法
对55例原发性脑肿瘤患儿在初次就诊时进行脊柱MRI检查以评估播散性转移瘤，检查序列包括矢状面二维T1加权（W）增强（+C）、横断面三维T1W+C容积内插屏气检查（VIBE）以及矢状面三维T2W SPACE（使用不同翻转角演化的应用优化对比度的采样完美成像）。
结果
MRI假阴性率为4%，脑脊液（CSF）假阴性率为16%（p = 0.07）。三维T1W+C VIBE使42%的患者中检测到的播散性转移瘤数量增加。25%的患者在三维T2W SPACE上的播散性转移瘤更明显。
结论
包括二维和三维序列的脊柱MRI检查显示出可能改善播散性转移瘤放射学诊断的特征。
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