Physics and Imaging in Radiation Oncology (Jul 2024)

Comparison of image registration methods in patients with non-melanoma skin cancer treated with superficial brachytherapy

  • Marta Szlag,
  • Magdalena Stankiewicz,
  • Sylwia Kellas-Ślęczka,
  • Małgorzata Stąpór-Fudzińska,
  • Agnieszka Cholewka,
  • Agnieszka Pruefer,
  • Piotr Wojcieszek

Journal volume & issue
Vol. 31
p. 100631

Abstract

Read online

The accumulated dose from sequential treatments of metachronous non-melanoma skin cancer can be assessed using image registration, although guidelines for selecting the appropriate algorithm are lacking. This study shows the impact of rigid (RIR), deformable (DIR) and deformable structure-based (SDIR) algorithms on the skin dose. DIR increased: the maximum dose (39.2 Gy vs 9.4 Gy), the dose to 0.1 cm3 (16.4 Gy vs 7.8 Gy) and the dose to 2 cm3 (7.6 Gy vs 5.7 Gy). RIR only affected the maximum dose, which increased to 17.0 Gy. SDIR correctly translated the dose maps, as none of the parameters changed significantly.

Keywords