Elastic Registration Based on Particle Filter in Radiotherapy Images with Brain Deformations
33rd Annual International Conference of the IEEE Engineering-in-Medicine-and-Biology-Society (EMBS), Massachusetts, United States Of America, 30 August - 03 September 2011, pp.8049-8052, (Full Text)
- Publication Type: Conference Paper / Full Text
- City: Massachusetts
- Country: United States Of America
- Page Numbers: pp.8049-8052
- Keywords: Elastic image registration, particle filter, optical flow, simulation datasets, radiotherapy real clinical case
- Istanbul University Affiliated: No
Abstract
This paper presents the evaluation of the accuracy of an elastic registration algorithm, based on the particle filter and an optical flow process. The algorithm is applied in brain CT and MRI simulated image datasets, and MRI images from a real clinical radiotherapy case. To validate registration accuracy, standard indices for registration accuracy assessment were calculated: the dice similarity coefficient (DICE), the average symmetric distance (ASD) and the maximal distance between pixels (Dmax). The results showed that this registration process has good accuracy, both qualitatively and quantitatively, suggesting that this method may be considered as a good new option for radiotherapy applications like patient's follow up treatment.