Bücker A, Adam G, Neuerburg J M, Glowinski A, van Vaals J J, Günther R W
Klinik für Radiologische Diagnostik, Medizinische Fakultät der Rheinisch-Westfälischen Technischen Hochschule Aachen.
Rofo. 1997 Nov;167(5):491-5. doi: 10.1055/s-2007-1015569.
The feasibility of the "LoLo"-technique for MR guidance of biopsy procedures was tested.
MR-guided biopsies were performed on 10 patients employing a 1.5 T system. The "LoLo"-technique used is a single shot turbo spin echo technique. Only a small field of view is covered in order to yield images with a resolution of 1 mm2 in 600 ms. The orthogonal orientation of the slice selective radio frequency pulses to each other prevents foldover artifacts.
No complications occurred. All biopsy procedures yielded sufficient material to diagnose the underlying disease. The "LoLo"-technique enabled good depiction of the needle tip in all cases. T2-weighted contrast typical for turbo spin echo images was observed. No foldover artifacts were detectable.
MR-guided biopsies are possible with the "LoLo"technique. Compared to gradient echo sequences T2-weighting and smaller susceptibility artifacts proved to be advantageous.
测试“LoLo”技术在磁共振引导活检程序中的可行性。
使用1.5T系统对10例患者进行磁共振引导活检。所采用的“LoLo”技术是一种单次激发快速自旋回波技术。仅覆盖小视野以在600毫秒内产生分辨率为1平方毫米的图像。层面选择射频脉冲彼此正交定向可防止折叠伪影。
未发生并发症。所有活检程序均获得足够材料以诊断潜在疾病。“LoLo”技术在所有病例中均能很好地显示针尖。观察到快速自旋回波图像典型的T2加权对比度。未检测到折叠伪影。
使用“LoLo”技术进行磁共振引导活检是可行的。与梯度回波序列相比，T2加权和较小的磁化率伪影被证明是有利的。
