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《Modern Medical Imagelogy》 2012-01
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The Study of Diffusion Weighted Imaging with Background Signal Suppression(DWIBS) in Metastatic Axial Bone Tumours: Using Different Coils

Guo Yuelin Liu Guorui Zheng Wenbin Rao Haibing Zheng Hongyi Department of Radiology,The Second Affiliated Hospital of Shantou University Medical College,Shantou,Guangdong 515041,China  
Purpose:To study diffusion weighted imaging with background signal suppression(DWIBS) in metastatic axial bone tumours,comparative study of MR built-in body coil and phase-arrayed total spine coil.Materials and Methods:The patients with metastatic axial bone tumours underwent DWIBS were divided into 2 groups,group A(n=16,using built-in body coil) and group B(n=23,using phase-arrayed total spine coil).All patients at least had one more whole spine MRI scan 3 months later and STIR series was necessary.Positive rate,number and minimum diameter of focus,sensitivity and specificity were compared between the two groups.Results:The positive rate of group A and group B were all 100%,the displaying ability of number and minimum diameter of focus in group A were better than group B.The sensitivity of group A and group B were 87.14% and 91.31%,and the specificity were 90.36% and 89.07%.Conclusion:DWIBS underwent by built-in body coil can get whole body DWI,but the space resolution and signal resolution were not good enough.To suspicious regions in axial bone,DWIBS got by phase-arrayed total spine coil is necessary to show the small focus and improve the sensitivity in detection of metastatic axial bone tumours.
【Fund】: 广东省科技计算项目(项目编号:2010B031600276)
【CateGory Index】: R445.2
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