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  • Hindawi Limited  (3)
  • 1
    Online Resource
    Online Resource
    Hindawi Limited ; 2022
    In:  Health & Social Care in the Community Vol. 30, No. 4 ( 2022-07), p. 1363-1372
    In: Health & Social Care in the Community, Hindawi Limited, Vol. 30, No. 4 ( 2022-07), p. 1363-1372
    Type of Medium: Online Resource
    ISSN: 0966-0410 , 1365-2524
    URL: Issue
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2022
    detail.hit.zdb_id: 2006277-1
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  • 2
    Online Resource
    Online Resource
    Hindawi Limited ; 2015
    In:  Journal of Sensors Vol. 2015 ( 2015), p. 1-11
    In: Journal of Sensors, Hindawi Limited, Vol. 2015 ( 2015), p. 1-11
    Abstract: Human respiration is the basic vital sign in remote monitoring. There has been remarkable progress in this area, but some challenges still remain to obtain the angle-of-arrival (AOA) and distinguish the individual signals. This paper presents a 2D noncontact human respiration localization method using Ultra-Wideband (UWB) 1D linear antenna array. The imaging reconstruction based on beamforming is used to estimate the AOA of the human chest. The distance-slow time 2D matrix at the estimated AOA is processed to obtain the distance and respiration frequency of the vital sign. The proposed method can be used to isolate signals from individual targets when more than one human object is located in the surveillance space. The feasibility of the proposed method is demonstrated via the simulation and experiment results.
    Type of Medium: Online Resource
    ISSN: 1687-725X , 1687-7268
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2015
    detail.hit.zdb_id: 2397931-8
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  • 3
    In: Journal of Healthcare Engineering, Hindawi Limited, Vol. 2021 ( 2021-9-17), p. 1-8
    Abstract: The aim of this study is to explore the clinical effect of deep learning-based MRI-assisted arthroscopy in the early treatment of knee meniscus sports injury. Based on convolutional neural network algorithm, Adam algorithm was introduced to optimize it, and the magnetic resonance imaging (MRI) image super-resolution reconstruction model (SRCNN) was established. Peak signal-to-noise ratio (PSNR) and structural similarity (SSIM) were compared between SRCNN and other algorithms. Sixty patients with meniscus injury of knee joint were studied. Arthroscopic surgery was performed according to the patients’ actual type of injury, and knee scores were evaluated for all patients. Then, postoperative scores and MRI results were analyzed. The results showed that the PSNR and SSIM values of the SRCNN algorithm were (42.19 ± 4.37) dB and 0.9951, respectively, which were significantly higher than those of other algorithms ( P   〈  0.05). Among patients with meniscus injury, 17 cases (28.33%) were treated with meniscus suture, 39 cases (65.00%) underwent secondary resection, 3 cases (5.00%) underwent partial resection, and 1 case (1.67%) underwent full resection. After meniscus suture, secondary resection, partial resection, and total resection, the knee function scores of patients after treatment were (83.17 ± 8.63), (80.06 ± 7.96), (84.34 ± 7.74), and (85.52 ± 5.97), respectively. There was no great difference in knee function scores after different methods of treatment ( P   〉  0.05), and there were considerable differences compared with those before treatment ( P   〈  0.01). Compared with the results of arthroscopy, there was no significant difference in the grading of meniscus injury by MRI ( P   〉  0.05). To sum up, the SRCNN algorithm based on the deep convolutional network algorithm improved the MRI image quality and the diagnosis of knee meniscus injuries. Arthroscopic knee surgery had good results and had great clinical application and promotion value.
    Type of Medium: Online Resource
    ISSN: 2040-2309 , 2040-2295
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2021
    detail.hit.zdb_id: 2545054-2
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