摘要
目的：探讨正常内耳64层螺旋CT表面透明成像最佳重建参数。方法：选择30例临床及影像学检查无异常耳，采用64层螺旋CT容积扫描后，进行放大重建，比较不同重建算法（高分辨率骨算法、标准骨算法、软组织算法）及重建间隔 （0.1 mm、0.2 mm、0.3 mm、0.4 mm、0.5 mm）对内耳表面透明成像（RaySum）三维图像质量的影响。结果：三种不同重建算法的内耳三维透明图像质量差异有极显著性意义（P<0.01），其中以高分辨率骨算法图像质量最佳。0.1 mm与0.2 mm重建间隔组图像质量差异无显著性意义（P>0.05）； 0.1 mm、0.2 mm重建间隔组图像质量明显优于0.3 mm、0.4 mm、0.5 mm重建间隔组，差异均有极显著性意义（P<0.01）。结论：64层螺旋CT内耳表面透明成像以高分辨率骨算法、0.2 mm重建间隔为最佳成像参数。
Abstract
Objective: To explore the optimal reconstruction parameters of normal inner ear RaySum imaging with 64-slice spiral CT. Methods: 30 cases of normal ears underwent 64-slice spiral CT volume scanning. The images were amplified reconstruction, and to compare the effects of different reconstruction algorithms(high resolution bone algorithm, standard bone algorithm, soft tissue algorithm) and reconstruction interval(0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm) on the 3D image quality of the inner ear RaySum imaging. Results: The differences were very significant in the inner ear three-dimensional RaySum image quality of three different reconstruction algorithms(P<0.01), and the high resolution bone algorithm image quality is the best. There was no significant difference in the image quality between 0.1 mm and 0.2 mm image reconstruction interval groups (P>0.05); the image quality of 0.1 mm and 0.2 mm reconstruction interval group were obviously better than that of 0.3 mm, 0.4 mm and 0.5 mm reconstruction interval group, the differences were significant(P<0.01). Conclusion: The high resolution bone algorithm and 0.2 mm reconstruction interval were used as the best imaging parameters of inner ear RaySum imaging with 64-slice spiral CT.
关键词
迷路 /
体层摄影术 /
螺旋计算机
Key words
Labyrinth /
Tomography /
spiral computed
邹玉林;李志娟;漆 强;钱会绒;朱刚明.
正常内耳64层螺旋CT表面透明成像最佳重建参数研究[J]. 中国临床医学影像杂志. 2015, 26(9): 620-622
ZOU Yu-lin;LI Zhi-juan;QI Qiang;QIAN Hui-rong;ZHU Gang-ming.
Study of the optimal reconstruction parameters of normal inner ear RaySum imaging with64-slice spiral computed tomography[J]. Journal of China Clinic Medical Imaging. 2015, 26(9): 620-622
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