【摘要】 目的在青光眼病人的视神经MRI成像过程中,探讨特殊的K空间填充技术以提升3D高清T2 Space序列的扫描效率。方法将入组的23例青光眼并视力下降行视神经MR扫描的患者按随机数字表法分为传统K空间填充技术法组(A组)和椭圆形K空间填充技术法组(B组),测量两组图像的信噪比,并对两组视神经图像进行主观质量评分,另在水模上分别计算两种不同技术的信噪比。结果两组视神经T2Space图像的信噪比和主观图像质量差异均无统计学意义(P值均>0.05),通过水模计算的信噪比没有明显差异(27.27/27.31)。结论采用椭圆柱形K空间填充方法的T2 Space序列在保证图像质量的基础上成像时间短,效率更高。更多还原

【Abstract】 Objective To evaluate a special K-space filling technology to improve the scanning efficiency of 3 D high-resolution T2 Space sequence in the imaging of optic nerve in glaucoma patients. Methods 23 patients who suffered from glaucoma are scanned with T2 Space in 3.0 T scanner. Traditional K-space filling technology and elliptic cylindrical K-space filling technology are used in scanning respectively. The signal-tonoise ratio and image quality score of the two groups were assessed. Results There is no significant difference in signal to noise ratio through water model calculation(27.27/27.31).There was no significant difference in SNR and subjective image quality between two groups of T2 Space images of optic nerve(P>0.05). Conclusion The T2 Space sequence with elliptic cylindrical K-space filling technology has shorter imaging time and higher efficiency on the basis of ensuring image quality.更多还原