Relationship Between Aneurysm Volume and Histologic Healing after Coil Embolization in Elastase-Induced Aneurysms: A Retrospective Study

This graph illustrates a linear regression showing a significant (P < .01) inverse relationship between the histologic healing index and the aneurysm volume. The graph also contains the regression line (straight line) and the 95% confidence intervals (bowed lines).

Healing in a larger aneurysm. A, DSA image before embolization shows the aneurysm cavity. B, DSA image immediately postembolization shows complete occlusion. C, DSA image before sacrifice shows that the aneurysm remains occluded. D, Staining shows that part of the aneurysm cavity is filled with unorganized thrombus (H&E, original magnification ×40).

Healing in a smaller aneurysm. A, DSA image before embolization shows the aneurysm cavity. B, DSA image immediately postimplantation shows that the aneurysm is totally occluded. C, DSA image before sacrifice shows that the aneurysm remains completely occluded. D, Staining shows that the aneurysm dome is filled with attenuated connective tissue (H&E, original magnification ×40).

This graph illustrates a linear regression showing a significant (P < .01) positive correlation between PD and histologic healing. The graph also contains the regression line (straight line) and the 95% confidence intervals (bowed lines).