Forward-looking intravascular orthogonal-solenoid coil for imaging and guidance in occlusive arterial disease
Forward-looking intravascular orthogonal-solenoid coil for imaging and guidance in occlusive arterial disease
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DOI：
10.1002/mrm.21667
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发表时间：
2008-08-01
影响因子：
3.3
通讯作者：
Wright, Graham A.
中科院分区：
文献类型：
--
作者：
Anderson, Kevan J. T.;Leung, General;Wright, Graham A.
最近的血管内成像线圈配置集中于能够对未闭血管的血管壁进行成像的侧视导管。这些设计存在信号零点的存在，并且当设备沿主静态场定向时无法在设备前面成像。当设备穿过闭塞病变时，这一点尤其重要。为了解决这些限制，我们提出了一种新的血管内线圈设计，由位于导管尖端的两个独立的正交螺线管组成。两个线圈的定向方式可以消除信号零点，并且可以在位于导管正前方的平面中进行成像。给出了设计的空间信噪比 (SNR) 分布的完整表征。线圈配置在 6F 引导导管上制造，并在体模和体内演示了其使用。
Recent intravascular imaging coil configurations have focused on side-viewing catheters capable of imaging the vessel wall of a patent vessel. These designs suffer from the presence of signal nulls and the inability to image in front of a device when it is oriented along the main static field. This is of particular importance when a device is being navigated through an occlusive lesion. To address these limitations we propose a new intravascular coil design consisting of two independent orthogonal solenoids located at the catheter tip. The two coils are oriented in such a way that signal nulls are eliminated and imaging is possible in planes located directly in front of the catheter. Complete characterization of the spatial signal-to-noise ratio (SNR) distribution of the design is presented. The coil configuration was fabricated on a 6F guide catheter, and its use is demonstrated in phantoms and in vivo.