Fig. 4.

Common particle compositions. ( a ) Small and irregular flakes of Contour (Boston Scientific, Washington, DC) PVA particles (yellow arrow) are seen upon deployment through a microcatheter. ( b ) More uniform sizing and distribution is available in a permanent particle model, such as the EmboGold (Merit Medical, Utah) particles (green arrow). ( c ) Similarly, homogenous particle composition is also available in a resorbable model, such as the EmboCube (Merit Medical) particles (red circle). (Images used with permissions from Boston Scientific [Image provided courtesy of Boston Scientific.© 2022 Boston Scientific Corporation or its affiliates. All rights reserved.] and © Merit Medical, reprinted by permission.)