Totterman S, Foster T H, Plewes D B, Simon J H, Ekholm S, Wicks A
Department of Radiology, University of Rochester, New York.
Acta Radiol. 1989 Nov-Dec;30(6):661-4.
The need for repositioning of surface coils and patients in MR examinations of the cervical and thoracic spine prolongs examination time. A new receiver design is proposed which overcomes this problem. The device is composed of two actively decoupled receiver coils mounted on the frame of a Philadelphia collar. These coils may be used separately to image either the thoracic or cervical spine or together to produce larger field-of-view images of the combined region. Signal-to-noise ratios of the separate cervical and thoracic spine images are not degraded as a result of mounting the receivers together. The full cervical and thoracic region is shown to be imaged at a signal-to-noise ratio significantly higher than that afforded by the body coil. A retrospective review of our case load suggests that a time saving could be achieved in approximately 1/3 of spine examinations by using this coil.
在颈椎和胸椎的磁共振检查中，重新定位表面线圈和患者的需求延长了检查时间。本文提出了一种新的接收器设计，可克服这一问题。该设备由两个主动去耦的接收线圈组成，安装在费城颈托的框架上。这些线圈既可以单独用于对胸椎或颈椎成像，也可以一起使用，以生成联合区域的更大视野图像。将接收器安装在一起不会降低单独的颈椎和胸椎图像的信噪比。结果表明，整个颈椎和胸椎区域成像时的信噪比显著高于体线圈提供的信噪比。对我们病例量的回顾性分析表明，使用这种线圈大约可以在三分之一的脊柱检查中节省时间。
