用于脑部磁共振成像的磁控管表面线圈。

Magnetron surface coil for brain MR imaging.

作者信息

Rodríguez Alfredo O

机构信息

Centro de Investigación en Imagenología e Instrumentación Médica, Universidad Autónoma Metropolitana-Iztapalapa, Mexico, DF, Mexico.

出版信息

Arch Med Res. 2006 Aug;37(6):804-7. doi: 10.1016/j.arcmed.2006.01.010.

DOI:10.1016/j.arcmed.2006.01.010

PMID:16824942

Abstract

A resonator surface coil was developed for magnetic resonance imaging of the brain and tested on a clinical imager. This resonator design was based on the cavity magnetron with an 8 slot-and-hole configuration. High-resolution brain images were obtained from a water-filled phantom and from a healthy volunteer brain. To compare coil performance, SNR-vs.-depth plots were computed for a single-loop coil and the magnetron prototype from phantom images. These experimentally acquired profiles show an important improvement in SNR. Thus, the magnetron surface coil can generate brain images with a high resolution and penetration capacity. The high sensitivity of this coil makes it a good candidate to be used in multicoil imaging sequences.

摘要

开发了一种用于脑部磁共振成像的谐振器表面线圈，并在临床成像仪上进行了测试。这种谐振器设计基于具有8个槽孔配置的腔磁控管。从充满水的体模和健康志愿者脑部获得了高分辨率脑图像。为了比较线圈性能，根据体模图像计算了单环线圈和磁控管原型的信噪比与深度关系图。这些通过实验获得的曲线表明信噪比有了显著提高。因此，磁控管表面线圈能够生成具有高分辨率和穿透能力的脑图像。该线圈的高灵敏度使其成为多线圈成像序列中使用的良好候选者。