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KMID : 0357520100330040355
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Journal of Radiological Science and Technology
2010 Volume.33 No. 4 p.355 ~ p.362
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Optimization of Exposure Parameters in Brain Computed Tomography
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Ko Seung-Jin
Kang Se-Sik
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Abstract
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This study determines a range of CT parameter values in Brain CT which are minimizing patient absorption dose without compromising the image quality and optimal exposure condition. We measured dose and image noise using conventional CT parameters in Brain CT. In additon, we evaluated dose, SNR and PSNR of head phantom images while changing kVp and rotation time. In this study, effectiveness of dose that was achieved from dose reproducible experiments in conventional head CT condition is determined by changing kVp and rotation time. Dose and PSNR is related to low dose-high resolution condition. In conclusion, we suggest that using proposed conditions is effective for imaging to compare with conditions proposed by the manufacturer.
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KEYWORD
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kVp, Rotation time, Absorbed dose, Noise, Computed Tomography
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