Effects of tracking error on lesion formation in High Intensity Focused Ultrasound liver tumor tracking treatments
Journal
AIP Conference Proceedings
Journal Volume
1359
Pages
177-182
Date Issued
2011
Author(s)
Abstract
High Intensity Focused Ultrasound (HIFU) liver tumor tracking treatments is a highly potential area of research. In order to develop a safe and effective HIFU liver tumor tracking treatment system, it is necessary to understand how tracking error affects lesion formation. In this paper, the relationship between the tracking error of the tracking mechanism and lesion formation is investigated through simulations and phantom experiments. Simulation and experimental results both show the lesion width first increases with increasing standard deviation of tracking error smaller than 1 mm, then decreases with increasing standard deviation of tracking error larger than 1 mm. On the other hand, the lesion length decreases with increasing standard deviation of the tracking error in all ranges. However, the lesion size still first increases with the tracking error standard deviation within 1 mm, then decreases when standard deviation of tracking lager than 1 mm. In another words, the lesion size is affected by the standard deviation of the tracking error as expected. Moreover, there exists an optimal lesion size around the standard deviation of 1 mm in our study. By taking the standard deviation of the tracking error into consideration, this study suggests that it is possible to develop a proper treatment plan without perfect tracking of the liver tumor.
SDGs
Type
conference paper