Larsson E M, Nilsson H, Holtås S, Ståhlberg F
Department of Diagnostic Radiology, University Hospital, Lund, Sweden.
Acta Radiol. 1989 Mar-Apr;30(2):141-6.
In order to optimize the coil selection for cervical and thoracic spine imaging the signal characteristics of two different solenoidal surface coils (15 cm and 30 cm diameter, respectively) as well as the head coil and body coil were determined using a 0.3 T MR scanner with a vertical magnetic field. Signal-to-noise ratio curves were obtained for each coil using tube phantoms and a human-like phantom. The findings were compared with images obtained in two healthy volunteers. The head coil was found to be superior for imaging of the cranio-cervical junction while the 15 cm surface coil gave better results in the remaining part of the cervical spine and the upper thoracic spine. The body coil was superior for imaging of the thoracic region at the level of the shoulders (T4-T6) but the 30 cm surface coil was better for the more caudal part of the thoracic spine. Combined phantom and in vivo studies are also recommended for evaluation of future, improved coils.
为了优化用于颈椎和胸椎成像的线圈选择，使用具有垂直磁场的0.3T磁共振扫描仪确定了两种不同螺线管表面线圈（直径分别为15cm和30cm）以及头部线圈和体线圈的信号特征。使用管状体模和类人体模为每个线圈获得信噪比曲线。将结果与两名健康志愿者获得的图像进行比较。发现头部线圈在颅颈交界处成像方面表现更优，而15cm表面线圈在颈椎其余部分和上胸椎成像中效果更好。体线圈在肩部水平（T4-T6）的胸部区域成像方面表现更优，但30cm表面线圈在胸椎更靠下的部分成像效果更好。还建议结合体模和体内研究来评估未来改进的线圈。
