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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.
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This study is a model experimental study using a phantom to propose an optimized brain CT scan protocol that can reduce the radiation dose of a patient and remain quality of image. We investigate the CT scan parameters of brain CT in clinical medical institutions and to measure the important parameters that determine the quality of CT images. We used 52 multislice spiral CT (SOMATOM Definition AS+, Siemens Healthcare, Germany). The scan parameters were tube voltage (kVp), tube current (mAs), scan time, slice thickness, pitch, and scan field of view (SFOV) directly related to the patient's exposure dose. The CT dose indicators were CTDIvol and DLP. The CT images were obtained while increasing the imaging conditions constantly from the phantom limit value (Q1) to the maximum value (Q4) for AAPM CT performance evaluation. And statistics analyzed with Pearson's correlation coefficients. The result of tube voltage that the increase in tube voltage proportionally increases the variation range of the CT number. And similar results were obtained in the qualitative evaluation of the CT image compared to the tube voltage of 120 kVp, which was applied clinically at 100 kVp. Also, the scan conditions were appropriate in the tube current range of 250 mAs to 350 mAs when the tube voltage was 100 kVp. Therefore, by applying the proposed brain CT scanning parameters can be reduced the radiation dose of the patient while maintaining quality of image.
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참고문헌 (26)
참고문헌 신청
S.P. Raman / 2013 / CT scan parameters and radiation dose: practical advice for radiologists / J. Am. Coll. Radiol. 10(11):840~846
T. Kubo / 2014 / Radiation dose reduction in chest CT-review of available options / Eur. J. Radiol. 83(10):1953~1961
M. Mahesh / 2012 / CT dose reduction strategy: to modulate dose or not in certain patients? / J. Am. Coll. Radiol. 9(12):931~932
D. Teunen / 1998 / The European Directive on health protection of individuals against the dangers of ionising radiation in relation to medical exposures (97/43/EURATOM) / J. Radiol. Prot. 18(2):133~137
National Research Council (NRC) / 2006 / Committee to Assess Health Risks from Exposure to Low Levels of Ionizing Radiation, Health risks from exposure to low levels of ionizing radiation: BEIR VII phase 2 / National Academies Press
T. Kubo / 2014 / Radiation dose reduction in chest CT-review of available options / Eur. J. Radiol. 83(10):1953~1961
M. Mahesh / 2012 / CT dose reduction strategy: to modulate dose or not in certain patients? / J. Am. Coll. Radiol. 9(12):931~932
D. Teunen / 1998 / The European Directive on health protection of individuals against the dangers of ionising radiation in relation to medical exposures (97/43/EURATOM) / J. Radiol. Prot. 18(2):133~137
National Research Council (NRC) / 2006 / Committee to Assess Health Risks from Exposure to Low Levels of Ionizing Radiation, Health risks from exposure to low levels of ionizing radiation: BEIR VII phase 2 / National Academies Press
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