[Composition of Patient Radiation Dose in Woven EndoBridge Embolization: Comparison with Stent-assisted Coiling].

PURPOSE: The aim of this study was to clarify the composition of patient radiation dose in Woven EndoBridge embolization (WEB) and to compare it with stent-assisted coiling (SAC).

METHODS

Fifteen patients in the WEB group and 15 patients in the SAC group were retrospectively analyzed. Total air kerma at the reference point (Ka,r), fluoroscopy air kerma (Fl-Ka,r), stationary air kerma (St-Ka,r), rotational air kerma (Ro-Ka,r), air kerma-area product (PKA), fluoroscopy time, number of acquisitions, procedure time, and peak skin dose (PSD) were compared between the two groups.

RESULTS

Fl-Ka,r, fluoroscopy time, procedure time, and PSD were significantly lower in the WEB group than in the SAC group. In contrast, Ro-Ka,r was higher in the WEB group. The proportion of Ro-Ka,r to Ka,r was 46% in the WEB group and 26% in the SAC group.

CONCLUSION

Compared with SAC, WEB was associated with lower Fl-Ka,r and shorter procedure time, whereas the contribution of Ro-Ka,r was greater. Therefore, radiation dose management in WEB should not rely solely on Ka,r; rather, it is important to understand each dose component individually.