Optimizing Y Particle Density Improves Outcomes After Radioembolization.

Purpose: To determine how particle density affects dose distribution and outcomes after lobar radioembolization.

Methods: Matched pairs of patients, treated with glass versus resin microspheres, were selected by propensity score matching (114 patients), in this single-institution retrospective study. For each patient, tumor and liver particle density (particles/cm) and dose (Gy) were determined.