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The Journal of Nuclear Medicine Vol. 30 No. 8 1399-1404
© 1989 by Society of Nuclear Medicine
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An Improved Radiolabeling Technique of Ivalon and Its Use for Dynamic Monitoring of Complications During Therapeutic Transcatheter Embolization

Steven A. Sirr, Timothy K. Johnson, David D. Stuart, Warren R. Stanchfield, John F. Cardella, Rene P. duCret and Robert J. Boudreau

Department of Radiology, Division of Nuclear Medicine, Hennepin County Medical Center
Department of Radiology, Metropolitan Medical Center
Department of Radiology, Division of Nuclear Medicine, University of Minnesota Hospitals, Minneapolis, Minnesota

Correspondence: For reprints contact: Steven A. Sirr, Hennepin County Medical Center, 701 Park Ave. South, Minneapolis, MN 55415.

ABSTRACT

Transcatheter embolization by Ivalon particles for treatment of arteriovenous malformations has been an accepted therapeutic technique for many years. We describe a new and efficient radiolabeling technique of Ivalon particles using [99mTc]sulfur colloid. Continuous and dynamic monitoring of injected radiolabeled Ivalon particles is made possible by viewing the persistence scope of a portable gamma camera whose head is positioned over the patient undergoing therapeutic embolization. Therefore, if inadvertent pulmonary embolism or reflux migration of radiolabeled Ivalon particles has occurred, the angiographer is immediately aware of this potentially serious or fatal complication and can take corrective action. We describe two patients, each with an arteriovenous malformation, who had therapeutic embolization with radiolabeled Ivalon particles, one resulting in reflux migration and the other resulting in inadvertent pulmonary embolism.






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Copyright © 1989 by the Society of Nuclear Medicine.