3 結果
OBJECTIVE
To determine if technetium Tc 99m-labeled macroaggregated albumin selective angioscintigraphy enables estimation of microparticle-arteriovenous shunt in branchial paragangliomas and nasopharyngeal angiofibromas.
METHODS
Technetium Tc 99m-labeled macroaggregated albumin particles with
OBJECTIVE
Juvenile angiofibroma is a benign, non-encapsulated neoplasm, consisting of vascular and connective tissue. Its main feature is a local malignancy. In its clinical course it destroys adjoining structures, without metastasizing. It appears rarely, and is mainly found in boys at puberty.
OBJECTIVE
To determine (a) whether superselective angioscintigraphy with technetium-99m macroaggregated albumin (99mTc-MAA) can be used for the evaluation of arteriovenous shunting in tumors and vascular malformations of the head and spine and (b) whether the amount of microparticles shunted is