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KMID : 0357520170400010079
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Journal of Radiological Science and Technology
2017 Volume.40 No. 1 p.79 ~ p.85
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Evaluation and Comparison of Contrast to Noise Ratio and Signal to Noise Ratio According to Change of Reconstruction on Breast PET/CT
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Lee Jae-Young
Lee Eul-Kyu
Kim Ki-Won
Jeong Hoi-Woun
Lyu Kwang-Yeul
Park Hoon-Hee
Son Jin-Hyun
Min Jung-Whan
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Abstract
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The purpose of this study was to measure contrast to noise ratio (CNR) and signal to noise ratio (SNR) according to change of reconstruction from region of interest (ROI) in breast positron emission tomography-computed tomography (PET-CT), and to analyze the CNR and SNR statically. We examined images of breast PET-CT of 100 patients in a University-affiliated hospital, Seoul, Korea. Each patient's image of breast PET-CT were calculated by using ImageJ. Differences of CNR and SNR among four reconstruction algorithms were tested by SPSS Statistics21 ANOVA test for there was statistical significance (p<0.05). We have analysis socio-demographical variables, CNR and SNR according to reconstruction images, 95% confidence according to CNR and SNR of reconstruction and difference in a mean of CNR and SNR. SNR results, with the quality of distributions in the order of PSF_TOF, Iterative and Iterative-TOF, FBP-TOF. CNR, with the quality of distributions in the order of PSF_TOF, Iterative and Iterative-TOF, FBP-TOF. CNR and SNR of PET-CT reconstruction methods of the breast would be useful to evaluate breast diseases.
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KEYWORD
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Breast , Positron emission tomography-computed tomography , Contrast to noise ratio , Signal to noise ratio
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