Adam Andreas, Hatzidakis Adam, Hamady Mohamad, Sabharwal Tarun, Gangi Afshin
Department of Interventional Radiology, Guy's and St. Thomas's Hospital, Lambeth Palace Road, SE1 7EH London, UK.
Eur Radiol. 2004 Sep;14(9):1688-91. doi: 10.1007/s00330-004-2294-4. Epub 2004 Mar 20.
The aim of this study was to establish whether using a percutaneously inserted metallic coil as a target facilitates the radiofrequency (RF) ablation of tumors poorly seen on unenhanced computed tomography (CT) or ultrasound (US) studies. We inserted a metallic coil percutaneously via a 21-gauge needle under CT guidance into five tumors during the phase of contrast enhancement in five patients. The coil was subsequently used as a target to guide placement of the RF electrode under fluoroscopic guidance. The precision of position was then checked with CT or US. We also carried out a small experimental study to establish the effect of metallic coils on the pattern of coagulation induced by RF. Placement of a metallic coil into the tumor enabled rapid and accurate placement of the RF electrode. The tumors were ablated with no adverse effects. The experimental study showed that the area of coagulation extends predictably along the coil. The application of the above technique is useful when using RF to ablate tumors poorly visualized on US and unenhanced CT.
本研究的目的是确定经皮插入金属线圈作为靶点是否有助于对在非增强计算机断层扫描（CT）或超声（US）检查中显示不佳的肿瘤进行射频（RF）消融。我们在CT引导下，通过一根21号针经皮将金属线圈插入5例患者的5个肿瘤中，插入操作在造影剂增强期进行。随后，将该线圈用作靶点，在荧光透视引导下引导射频电极的放置。然后用CT或US检查位置的精确性。我们还开展了一项小型实验研究，以确定金属线圈对RF诱导的凝固模式的影响。将金属线圈置于肿瘤内能够快速、准确地放置射频电极。肿瘤得以消融，且无不良影响。实验研究表明，凝固区域沿线圈可预测地扩展。当使用RF消融在US和非增强CT上显示不清的肿瘤时，应用上述技术是有用的。
