Motion correction and noise removing in lung diffusion-weighted MRI using low-rank decomposition

Wang, Xinhui; Chen, Houjin; Wan, Qing; Li, Yanfeng; Cai, Naxin; Li, Xinchun; Peng, Yahui

doi:10.1007/s11517-020-02224-7

Cited by 4 publications

(1 citation statement)

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“…However, studies have found that the image processed by this algorithm has fringe distortion, and the denoising effect decreases sharply when the noise increases [ 17 ]. Then, the weighted low-rank matrix restoration algorithm (RLRE for short) was proposed, and it was found that the algorithm had a significant denoising effect and significantly alleviated the above problems [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Artificial Intelligence Algorithm-Based MRI for Differentiation Diagnosis of Prostate Cancer

Luo

Zeng

Chen

2022

Computational and Mathematical Methods in Medicine

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The rapid increase in prostate cancer (PCa) patients is similar to that of benign prostatic hyperplasia (BPH) patients, but the treatments are quite different. In this research, magnetic resonance imaging (MRI) images under the weighted low-rank matrix restoration algorithm (RLRE) were utilized to differentiate PCa from BPH. The diagnostic effects of different sequences of MRI images were evaluated to provide a more effective examination method for the clinical differential diagnosis of PCa and BPH. 150 patients with suspected PCa were taken as the research objects. Pathological examination revealed that 137 patients had PCa and 13 patients had BPH. The pathological results were the gold standard and were compared with the MRI results of different sequences. Therefore, the accuracy of the MRI results was evaluated. The results showed that with the rise of Gaussian noise, the peak signal-to-noise ratio (PSNR) and structural similarity (SSIM) of all three algorithms gradually decreased, but the PSNR and SSIM of the RLRE algorithm were always higher than those of the RL and BM3D algorithms ( P < 0.05 ). The sensitivity (97.08%), specificity (92.31%), accuracy (96.67%), and consistency (0.678) of the dynamic contrast enhancement (DCE) sequence were higher than those of the plain scan (86.13%, 69.23%, 84.67%, and 0.469, respectively). In conclusion, the RLRE algorithm could promote the resolution of MRI images and improve the display effect. DCE could better differentiate PCa from BPH, had great clinical application value, and was worthy of clinical promotion.

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Section: Introductionmentioning

confidence: 99%