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Evaluation of noise reduction performance using deep learning reconstruction: A phantom study
Hitoshi Kubo1, Yuya Abe2, Tomoya Yokokawa2, Seira Yokoyama2, and Koji Hoshi2
1Fukushima Medical University, Fukushima, Japan, 2Hoshi General Hospital, Koriyama, Japan
SNRs were increased higher significantly by DLR in all SNR ranges. Increasing ratio of SNR was varied by means of parameter settings. Combination of the DLR parameters affected varies to SNR, SSIM, and spatial resolution of the images.
Signal-to-Noise ratios on the images of 2 mm, 4 mm, and 8 mm of slice thickness with various parameters of Deep Learning Reconstruction (DLR) were shown. DLR had a powerful performance to increase SNR in all SNR ranges.
Structural similarity (SSIM) of the images were shown. Decreasing of SSIM higher in thinner slice images is compared to that in thicker slice images. Edge enhancement recovered SSIM higher, especially in thinner slice images.