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http://dx.doi.org/10.17946/JRST.2016.39.2.09

Evaluation of the Modulation Transfer Function for Computed Tomography by Using American Association Physics Medicine Phantom  

Kim, Ki-Won (Department of Radiology, Kyung Hee University Hospital at Gang-dong)
Choi, Kwan-Woo (Department of Radiology, Asan Medical Center)
Jeong, Hoi-Woun (Department of Radiological Technology, Baekseok Culture University)
Jang, Seo-Goo (Department of Medical Science, Soonchunhyang University)
Kwon, Kyung-Tae (Department of Radiological Technology, Dongnam Health University)
Son, Soon-Yong (Department of Radiological Technology, Wonkwang Health Science University)
Son, Jin-Hyun (Department of Radiological Technology, Shingu University)
Min, Jung-Whan (Department of Radiological Technology, Shingu University)
Publication Information
Journal of radiological science and technology / v.39, no.2, 2016 , pp. 193-198 More about this Journal
Abstract
In clinical computed tomography (CT), regular quality assurance (QA) has been required. This study is to evaluate the MTF for analyzing the spatial resolution using AAPM phantom in CT exam. The dual source somatom definition flash (siemens healthcare, forchheim, Germany), the brilliance 64 (philips medical system Netherlands) and aquilion 64 (toshiba medical system, Japan) were used in this study. The quantitative evaluation was performed using the image J (wayne rasband national institutes of health, USA) and chart method which is measurement of modulation transfer function (MTF). In MTF evaluation, the spatial frequencies corresponding to the 50% MTF for the CT systems were 0.58, 0.28, and $0.59mm^{-1}$, respectively and the 10% MTF for the CT systems were 1.63, 0.89, and $1.21mm^{-1}$, respectively. This study could evaluate the characteristic of spatial resolution of MTF using chart method, suggesting the quantitative evaluation method using the data.
Keywords
Modulation transfer function (MTF); Spatial resolution (SR);
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Times Cited By KSCI : 10  (Citation Analysis)
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