2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/219702In this contribution an improved analysis is described to extract precise charm and bottom quark masses from experimental and theoretical moments of the photon polarization function. The obtained $\bar{\rm MS}$ mass values read $m_c(3 {GeV})=0.986(13)$ GeV and $m_b(10 {GeV})=3.609(25)$ GeV.4 pages, LaTeX, to appear in the proceedings of the International Linear Collider Workshop LCWS07, Hamburg, 2007High Energy Physics - Phenomenologytext