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Simulation Study for the Distortion Correction of Digital Angiographic Images using Geometric Transformation  

진호상 (가톨릭대학교 의공학교실)
신동훈 (가톨릭대학교 의공학교실)
허순녕 (가톨릭대학교 의공학교실)
곽철은 (가톨릭대학교 의공학교실)
최보영 (가톨릭대학교 의공학교실)
이형구 (가톨릭대학교 의공학교실)
서태석 (가톨릭대학교 의공학교실)
Publication Information
Journal of Biomedical Engineering Research / v.23, no.5, 2002 , pp. 365-373 More about this Journal
Abstract
Accurate localization of target lesion is required to protect normal peripheral tissue and irradiate exactly to tumors in stereotactic radiosurgery(SRS). Digital angiography is one of the most effective diagnostic tools to detect and identify the target tumors. However, it shows pincushion distortion due to the characteristics of the image intensifier. We have implemented a simulation study for the correction of distortion using the geometric transformation. Phantom images were produced transformation. In conclusion, the geometric transformation could effectively be used for the pincushion distortion of image intensifier and there was no significant different between two methods indicating 2% correction error from the ideal image in all cases.
Keywords
Digital angiography; Stereotactic radiosurgery; Pincushion distortion; Geometric transformation;
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