An overlooked source of skin dose perturbation: Commercial tattoo inks in radiotherapy
Fig 4
Electron-beam spatial dose distributions for a multi-color tattoo geometry (1 × 1 cm2, four 0.5 × 0.5 cm2 quadrants).
No ink (top-left), black (top-right), orange (bottom-left), and brown (bottom-right). Dose maps shown for 6 MeV(a–c) and 18 MeV (d–f) electron at 0%, 50%, and 100% pigment loading. Electron irradiation produces laterally uniform dose distributions.