High resolution intravascular MRI and MRS by using a catheter receiver coil
High resolution intravascular MRI and MRS by using a catheter receiver coil
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DOI：
10.1002/mrm.1910360415
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发表时间：
1996-10-01
影响因子：
3.3
通讯作者：
Zerhouni, EA
中科院分区：
文献类型：
--
作者：
Atalar, E;Bottomley, PA;Zerhouni, EA
通过磁共振成像和波谱技术可以获得动脉粥样硬化的潜在重要诊断信息，因为主动脉、冠状动脉和肾动脉等关键血管并不靠近身体表面，表面线圈不足以将数据质量提高到期望的水平，已经提出了一些导管MR接收器线圈设计用于成像大血管（如主动脉）的壁。这些线圈的纵向覆盖范围有限，而且它们太厚，无法放入小容器中。作者描述了线圈设计技术的理论，推导了线圈信噪比特性的公式，并展示了使用该导管线圈获得的离体人主动脉高分辨率横截面图像的示例。此外，获得了高分辨率的兔体内主动脉图像，以及一组空间分辨的狗旋转冠状动脉化学位移光谱。
Potentially important diagnostic information about atherosclerosis can be obtained by using magnetic resonance imaging and spectroscopy techniques, Because critical vessels such as the aorta, coronary arteries, and renal arteries are not near the surface of the body, surface coils are not adequate to increase the data quality to desired levels, A few catheter MR receiver coil designs have been proposed for imaging the walls of large blood vessels such as the aorta. These coils have limited longitudinal coverage and they are too thick to be placed into small vessels. A flexible, long and narrow receiver coil that can be placed on the tip of a catheter and will enable multi-slice high resolution imaging of small vessels has been developed, The authors describe the theory of the coil design technique, derive formulae for the signal-to-noise ratio characteristics of the coil, and show examples of high resolution cross-sectional images from isolated human aortas acquired by using this catheter coil. In addition, high resolution in vivo rabbit aorta images were obtained as well as a set of spatially resolved chemical shift spectra from a dog circumflex coronary artery.