An improved radiolabeling technique of ivalon and its use for dynamic monitoring of complications during therapeutic transcatheter embolization.
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.
Department of Radiology, Hennepin County Medical Center, Minneapolis, MN 55415.
S A
SA
Sirr
T K
TK
Johnson
D D
DD
Stuart
W R
WR
Stanchfield
J F
JF
Cardella
R P
RP
duCret
R J
RJ
Boudreau
D000328:Adult; D001165:Arteriovenous Malformations / Q000628:therapy*; D004621:Embolization, Therapeutic / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007553:Isotope Labeling / Q000379:methods*; D008875:Middle Aged; D011145:Polyvinyls / Q000627:therapeutic use*; D013671:Technetium Tc 99m Sulfur Colloid
D011145:Polyvinyls; C026699:ivalon sponge; D013671:Technetium Tc 99m Sulfur Colloid