Yamanashi W S, Saksanen S J, Valentine J L, Powers M, Phillips S W, Wagner B D, Hill D, Lewis J E
Department of Radiology, Oral Roberts University School of Medicine, Tulsa, Oklahoma.
Angiology. 1991 Mar;42(3):195-201. doi: 10.1177/000331979104200303.
Electromagnetic field-focusing (EFF) probe is a precision surgical and interventional tool. Use of the device produces maximum temperature in excess of 1800 degrees C by convergence of radio-frequency (RF) induced eddy currents in biological tissues. Applications of the EFF probe in angioplasty, aneurysm thrombosis, and neurosurgery have been previously reported. In the present work, the EFF probe was guided under fluoroscopic control and used to occlude renal, splenic, and vertebral arteries in dogs. The occlusion was typically accomplished with about one minute of RF power application. Histology of the treated vessel three to six weeks posttreatment showed total occlusion consisting of intimal and subintimal changes and organized thrombus in the lumen. This suggests that the EFF probe in comparison with other procedures is an inexpensive, relatively safe precision interventional tool for performing an occlusion for experimental and therapeutic purposes.
电磁场聚焦（EFF）探头是一种精密的手术和介入工具。使用该设备时，通过生物组织中射频（RF）感应涡流的汇聚，可产生超过1800摄氏度的最高温度。此前已有关于EFF探头在血管成形术、动脉瘤血栓形成和神经外科手术中的应用报道。在本研究中，EFF探头在荧光透视控制下进行引导，并用于阻断犬的肾动脉、脾动脉和椎动脉。通常施加约一分钟的射频功率即可完成血管阻断。治疗后三至六周对治疗血管进行组织学检查，结果显示完全阻塞，包括内膜和内膜下改变以及管腔内有组织的血栓形成。这表明，与其他手术方法相比，EFF探头是一种廉价、相对安全的精密介入工具，可用于实验和治疗目的的血管阻断。
