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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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We studied the method to gain a clear LSF using a thick aluminum sheet and to acquire the spatial resolution value with a high accuracy for a low spatial resolution imaging modality. In this study, aluminum sheets with thicknesses varying from 0.3 mm to 1.2 mm were tested to derive a modulation transfer function (MTF) for the oversampling and non-oversampling methods. The results were evaluated to verify the feasibility of the use of thick sheets for periodic quality assurance. Oversampling was more accurate than non-oversampling, and an aluminum sheet with a correction factor less than 2 at the cut-off frequency, which was less than 0.8 mm in this case, was confirmed to be suitable for MTF measurements. Therefore, MTF derivation from a thick aluminum sheet with thickness correction is plausible for a medical imaging modality
목차
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참고문헌 (17)
참고문헌 신청
Boone JM / 2001 / Determination of the presampled MTF in computed tomography / Medical Physics 28(3):356
Garayoa J / 2013 / A study on image quality provided by a kilovoltage cone-beam computed tomography / J Appl Clin Med Phys 14(1):3888
Villafana T / 1975 / Modulation transfer function of a finite scanning microdensitometer slit / Medical Physics 2(5):251
Gopal A / 2009 / Use of a line-pair resolution phantom for comprehensive quality assurance of electronic portal imaging devices based on fundamental imaging metrics / Medical Physics 36(6):2006
Nickoloff EL / 1985 / A simplified approach for modulation transfer function determinations in computed tomography / Medical Physics 12(4):437
Garayoa J / 2013 / A study on image quality provided by a kilovoltage cone-beam computed tomography / J Appl Clin Med Phys 14(1):3888
Villafana T / 1975 / Modulation transfer function of a finite scanning microdensitometer slit / Medical Physics 2(5):251
Gopal A / 2009 / Use of a line-pair resolution phantom for comprehensive quality assurance of electronic portal imaging devices based on fundamental imaging metrics / Medical Physics 36(6):2006
Nickoloff EL / 1985 / A simplified approach for modulation transfer function determinations in computed tomography / Medical Physics 12(4):437
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