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. Author manuscript; available in PMC: 2020 Feb 1.
Published in final edited form as: Acad Radiol. 2018 May 22;26(2):270–274. doi: 10.1016/j.acra.2018.03.022

Figure 2.

Figure 2.

Scanning electron microscope images of gentamicin-laden 3D printed catheters (A, B) and methotrexate(MTX)-laden 3D printed catheters (C-D) and filaments (E-F). A, B). A and B). Multiple amorphous defects seen at 35x magnification suggest gentamicin incorporation into the catheter structure (by lack of a normal uniform filament structure) (A, arrows). This is confirmed at 20,000x magnification, which highlights the amorphous configuration of gentamicin (B, circles). C-D). Multiple coarse outpouchings are seen on the surface of the 3D printed catheter surface at 35x magnification, suggesting MTX incorporation on the catheter’s surface (arrows). Clusters of the crystalline structure MTX is demonstrated at the higher 10,000x magnification view (circles). E, F). MTX-laden individual filaments with the crystalline structure demonstrated at 1,000x (E, circle) and 20,000x (F) magnification views.