1. Department of Radiology, West China Hospital, Sichuan University, Chengdu Sichuan 610041, China丨
2. Shanghai United Imaging Intelligence Co., Ltd., Shanghai 201800, China
Abstract：Objective To evaluate the image denoising effect in lumbar spine MRI based on deep learning reconstruction algorithm and explore its feasibility in clinical application. Methods A total of 53 patients requiring lumbar MR examination were
prospectively included. Each patient underwent sagittal T1-weighted image (T1WI), T2-weighted fat suppression imaging (T2WIFS),
short time inversion recovery (STIR) sequence and transverse T2WI sequence scanning for obtaining the original images (Group
A). By using conventional filter reconstruction and Deep Recon technology to reconstruct the images of each sequence, we obtained
the conventional filter reconstruction images (Group B) and Deep Recon images (Group C). The quantitative indicators peak signalto-
noise ratio (PSNR) and image sharpness were used to evaluate the SNR and sharpness of the three groups of images in each
sequence. Two radiologists scored and analyzed the overall quality, noise, contrast resolution, and artifacts of the image. Finally, the
scores of the two sets were tested for consistency. Results Compared with Group A and Group B, the PSNR values of all lumbar
spine sequences in Group C were increased (P<0.05), and the image sharpness values of T1WI, STIR and transverse T2WI were
increased (P<0.05). The subjective evaluation of the image showed that the noise, contrast resolution and artifacts on T1WI of the
Group C, as well as the overall image quality, noise, contrast resolution and artifacts of other sequences in Group C were significantly
higher than those in groups A and B (P<0.05). Conclusion Deep Recon has good denoising effect in conventional sequence images
of lumbar spine, and can improve the image quality, which has certain clinical application value.
张雨1，徐旭1，肖奕1，曾令明1，曾文1，夏春潮1，张树恒2，罗曼2，李真林1. 基于深度学习重建算法在腰椎MRI中的降噪应用研究[J]. 中国医疗设备, 2021, 36(10): 19-23.
ZHANG Yu1，XU Xu1，XIAO Yi1，ZENG Lingming1，ZENG Wen1，XIA Chunchao1，ZHANG Shuheng2，LUO Man2，LI Zhenlin1. Application of Denoising in Lumbar Spine MRI Based on Deep Learning Reconstruction Algorithm. China Medical Devices, 2021, 36(10): 19-23.
