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FIG 3. Angiograms obtained before and after embolization.
A, Oblique image obtained prior to embolization of the RM with roadmap technique shows that the microcatheter is positioned in the ascending PA close to the nidus and distal to the collaterals to the VA.
B, Oblique image obtained after embolization of the PA with pure 2-P-HEMA. The embolic agent completely fills the compartment. Note the intense radiopacity. Although the microcatheter is embedded in the 2-P-HEMA, it can be retracted without sticking. Top image shows embolization with the roadmap technique. Bottom image is an unsubtracted picture of the embolized nidus.
C, Oblique control angiogram of the right CCA obtained after embolization of the ascending PA. The microcatheter is in the same position as in A. Collateral filling of the RM by the RA and AA is preserved.
D, Control angiogram of the right CCA obtained 8 mo after embolization depicts long-term occlusion of the embolized feeder.
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