Iso-Dose Map Generation and Dose-Area Product Calculation through Digital Image Processing of Scanned Irradiated Radiochromic Films

  • Y. Ruiz-Gonzalez Centro de Investigaciones de la Informática, Universidad Central “Marta Abreu” de Las Villas, Santa Clara, Cuba
  • S. Rodriguez-Ledesma Centro de Ingeniería Clínica y Electromedicina, Santa Clara, Cuba
  • J. E. Paz-Viera Zimmer Biomet, Toronto, Canada
  • J. V. Lorenzo-Ginori Informatics Research Center Central University of Las Villas, Santa Clara, Cuba

Abstract

Iso-dose maps creation and kerma-area products calculation are important procedures in radiotherapy and medical imaging. In this work, a method is presented to obtain iso-dose maps through digital processing of the images obtained from radiochromic films, which are employed to estimate the dose absorbed by the patient. The kerma-area product in selected regions of interest (ROIs) in the iso-dose map was then evaluated. The images were obtained by scanning the irradiated films using a commercial flatbed scanner. The iso-dose areas were extracted by means of an image segmentation algorithm, while calibration for a particular film to obtain a sensitometric curve relating dose to film darkening, was also made. A software interface allowed introducing the scanned image for the estimation of kerma-area products by defining the ROI interactively. The methods developed in this work allowed to implement a software application to obtain the iso-dose maps and kerma-area product in selected ROIs.

Published
Dec 13, 2020
How to Cite
RUIZ-GONZALEZ, Y. et al. Iso-Dose Map Generation and Dose-Area Product Calculation through Digital Image Processing of Scanned Irradiated Radiochromic Films. Revista Cubana de Física, [S.l.], v. 37, n. 2, p. 101-107, dec. 2020. ISSN 2224-7939. Available at: <http://revistacubanadefisica.org/index.php/rcf/article/view/2020v37p101>. Date accessed: 09 mar. 2021.
Section
Original Articles