基于信噪差分比方法的磁共振射频线圈在头颅血管造影中的对比研究  

Comparison of Two Coils for MR Angiography Based on the SDNR Method

作　　者：王龙辰[1] 李斌[1] 肖云峰[2] 乔瑞华[2] 

机构地区：[1]上海交通大学附属第六人民医院医学工程部,上海200233 [2]上海交通大学附属第六人民医院放射科,上海200233

出　　处：《中国医疗器械杂志》2011年第4期256-259,共4页Chinese Journal of Medical Instrumentation

摘　　要：用信噪比和血管信噪差分比方法,对相控阵表面头线圈和鸟笼头线圈的体模和人体磁共振血管造影(MRA)成像性能进行了对比研究,研究结果表明,相控阵线圈具有优势,也证明了该方法在磁共振线圈评价和临床选择方面的有效性。In this paper, signal-to-noise ratio（SNR） and signal different-to-noise ratio（SDNR） methods were used to compare image quality using two different radiofrequency coils. The two coil types included an eight-element phased-array coil and a quadrature birdcage head coil with endcap and the comparison studies performed on a uniform cylindrical phantom and volunteer respectively. The results showed phased-array coil have advantages and proved effectiveness of the method in the evaluation and selection of coils.

关 键 词：磁共振血管造影 射频线圈 信噪比 信噪差分比 

分 类 号：R445.2[医药卫生—影像医学与核医学]