Comparison of particle penetration with non-spherical polyvinyl alcohol versus trisacryl gelatin microspheres in women undergoing premyomectomy uterine artery embolization

MS particles (700-900 μm) penetrate significantly deeper into leiomyomata compared with non-spherical PVA (355-500 μm). MS may therefore confer advantages in UAE, as they may more specifically target the fibroid, allowing an earlier end-point to embolization and minimizing ischaemic damage to normal myometrium and ovaries.