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Angiology
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Intervascular Occlusion of Canine Renal, Splenic, and Vertebral Arteries Using Electromagnetic Field Focusing (EFF) Probe

William S. Yamanashi

Departments of Radiology, Pharmacology, and Pathology, Oral Roberts University School of Medicine and St. John Medical Center, Tulsa, Oklahoma

Seppo J. Saksanen

Departments of Radiology, Pharmacology, and Pathology, Oral Roberts University School of Medicine and St. John Medical Center, Tulsa, Oklahoma

Jimmie L. Valentine

Departments of Radiology, Pharmacology, and Pathology, Oral Roberts University School of Medicine and St. John Medical Center, Tulsa, Oklahoma

Matthew Powers

Departments of Radiology, Pharmacology, and Pathology, Oral Roberts University School of Medicine and St. John Medical Center, Tulsa, Oklahoma

Steven W. Phillips

Departments of Radiology, Pharmacology, and Pathology, Oral Roberts University School of Medicine and St. John Medical Center, Tulsa, Oklahoma

Benny D. Wagner

Departments of Radiology, Pharmacology, and Pathology, Oral Roberts University School of Medicine and St. John Medical Center, Tulsa, Oklahoma

Deborah Hill

Departments of Radiology, Pharmacology, and Pathology, Oral Roberts University School of Medicine and St. John Medical Center, Tulsa, Oklahoma

John E. Lewis

Departments of Radiology, Pharmacology, and Pathology, Oral Roberts University School of Medicine and St. John Medical Center, Tulsa, Oklahoma

Electromagnetic field-focusing (EFF) probe is a precision surgical and inter ventional tool. Use of the device produces maximum temperature in excess of 1800°C by convergence of radio-frequency (RF) induced eddy currents in biolog ical 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.

Angiology, Vol. 42, No. 3, 195-201 (1991)
DOI: 10.1177/000331979104200303
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