磁共振体腔线圈的设计  

Design of MRI interventional RF coil

作　　者：白国刚[1] 张宏杰[2] 

机构地区：[1]解放军总医院第二附属医院,北京市100091 [2]海军总医院,北京市100037

出　　处：《医疗卫生装备》2007年第11期14-15,共2页Chinese Medical Equipment Journal

基　　金：国家自然科学基金资助项目(10175004)资助

摘　　要：目的:设计一种新型的经直肠的射频线圈,以增加前列腺图像的信噪比,提高磁共振诊断的效率。方法:通过电路及结构的优化设计,制作了磁共振体腔线圈的模型。结果:使用该磁共振体腔模型,对所设计的线圈和商用的TORSO线圈进行了模拟人体环境的MR成像。结论:对2种成像数据的分析结果表明,使用设计的磁共振体腔线圈可以大大提高图像的信噪比和空间分辨率,进而提高用综合信息诊断前列腺疾病的能力。Objective To design a new type of RF endorectal coil so as to increase signal to noise ratio （SNR） and improve the efficiency of MRI diagnosis, Methosds Through circuit and construction optimization, a MRI model of coil in vivo was designed. Results The images and spectroscopy of a special phantom were acquired and the results were compared to those of the commercial TORSO coil. Conclusion This coil gives a significantly higher SNR at the region of interest （ROI）. The achieved high local SNR and resulting high spatial resolution can add more anatomic and biochemical information to the diagnosis of prostate diseases.

关 键 词：磁共振成像 射频线圈 经直肠线圈 

分 类 号：TH774[机械工程—仪器科学与技术]