Fig. 4

Representative hematoxylin and eosin (H&E)-stained images of aneurysm treatment with novel flow disruptor (NFD) protrusion. (a) H&E images showing a near-complete aneurysm within the aneurysm cavity (black dotted line) and at the neck level (red dotted line). (b) The aneurysmal cavity is filled with loose connective tissue (magnification: × 10.0). (c) The proximal tip of NFD protrudes toward the parent artery and is embedded in the arterial wall (magnification: × 3.0). A concave shape (star) is formed toward the aneurysmal dome. (d) H&E images showing an incomplete aneurysm within the aneurysm cavity (black dotted line) and at the neck level (red dotted line). (e) The aneurysmal cavity is filled with loose connective tissue (magnification: × 10.0). (f) The proximal tip of the NFD is floating (arrowheads) in the parent artery (magnification: × 3.0). A macroconcave shape (star) is formed toward the aneurysmal dome.