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  • Open Access

    ARTICLE

    Noninvasive Radar Sensing Augmented with Machine Learning for Reliable Detection of Motor Imbalance

    Faten S. Alamri1, Adil Ali Saleem2, Muhammad I. Khan3, Hafeez Ur Rehman Siddiqui2, Amjad Rehman3,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.146, No.1, 2026, DOI:10.32604/cmes.2025.074679 - 29 January 2026

    Abstract Motor imbalance is a critical failure mode in rotating machinery, potentially causing severe equipment damage if undetected. Traditional vibration-based diagnostic methods rely on direct sensor contact, leading to installation challenges and measurement artifacts that can compromise accuracy. This study presents a novel radar-based framework for non-contact motor imbalance detection using 24 GHz continuous-wave radar. A dataset of 1802 experimental trials was sourced, covering four imbalance levels (0, 10, 20, 30 g) across varying motor speeds (500–1500 rpm) and load torques (0–3 Nm). Dual-channel in-phase and quadrature radar signals were captured at 10,000 samples per second… More >

  • Open Access

    ARTICLE

    Noninvasive Hemoglobin Estimation with Adaptive Lightweight Convolutional Neural Network Using Wearable PPG

    Florentin Smarandache1, Saleh I. Alzahrani2, Sulaiman Al Amro3, Ijaz Ahmad4, Mubashir Ali5,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.144, No.3, pp. 3715-3735, 2025, DOI:10.32604/cmes.2025.068736 - 30 September 2025

    Abstract Hemoglobin is a vital protein in red blood cells responsible for transporting oxygen throughout the body. Its accurate measurement is crucial for diagnosing and managing conditions such as anemia and diabetes, where abnormal hemoglobin levels can indicate significant health issues. Traditional methods for hemoglobin measurement are invasive, causing pain, risk of infection, and are less convenient for frequent monitoring. PPG is a transformative technology in wearable healthcare for noninvasive monitoring and widely explored for blood pressure, sleep, blood glucose, and stress analysis. In this work, we propose a hemoglobin estimation method using an adaptive lightweight… More >

  • Open Access

    ARTICLE

    An Improved Deep Structure for Accurately Brain Tumor Recognition

    Mohamed Maher Ata1, Reem N. Yousef2, Faten Khalid Karim3,*, Doaa Sami Khafaga3

    Computer Systems Science and Engineering, Vol.46, No.2, pp. 1597-1616, 2023, DOI:10.32604/csse.2023.034375 - 09 February 2023

    Abstract Brain neoplasms are recognized with a biopsy, which is not commonly done before decisive brain surgery. By using Convolutional Neural Networks (CNNs) and textural features, the process of diagnosing brain tumors by radiologists would be a noninvasive procedure. This paper proposes a features fusion model that can distinguish between no tumor and brain tumor types via a novel deep learning structure. The proposed model extracts Gray Level Co-occurrence Matrix (GLCM) textural features from MRI brain tumor images. Moreover, a deep neural network (DNN) model has been proposed to select the most salient features from the… More >

  • Open Access

    ARTICLE

    Two approaches for calculating female fetal DNA fraction in noninvasive prenatal testing based on size analysis of maternal DNA fragments

    JIANBO LU1,2,#,*, XIAOHAN SUN3,#, XU MA1,2,*

    BIOCELL, Vol.46, No.1, pp. 185-193, 2022, DOI:10.32604/biocell.2021.015301 - 29 September 2021

    Abstract The concentration of cell-free fetal DNA fragments should be detected before noninvasive prenatal testing (NIPT). The fetal DNA molecules have significant clinical potential in determining the overall performance of NIPT and clinical interpretation. It is important to measure fetal DNA fraction before NIPT. However, there is still little research on how to calculate the concentration of female fetuses. Two estimation approaches were proposed to calculate fetal DNA fraction, including the fragments size-based approach, aneuploid-based approach, which are all approaches based on chromosome segments. Based on high-throughput sequencing data, two approaches to calculate the DNA fraction More >

  • Open Access

    ORIGINAL ARTICLE

    Upregulated Tie2 expression in plasma: a potential noninvasive biomarker for the diagnosis of breast cancer

    Qingzhu Song1, Fenglan Zhang2, Tian Yuan2, Yulong Wei2

    European Cytokine Network, Vol.32, No.2, pp. 39-47, 2021, DOI:10.1684/ecn.2021.0468

    Abstract Breast cancer is by far the most common malignancy found in women and causes a significant public health problem around the world. Early diagnosis of cancer plays an important role in successful treatment and survival of patients. This study aims to investigate the possibility of plasma Tie2 to be used as a biomarker for diagnosis of breast cancer. In total, 20 healthy volunteers and 33 breast cancer patients were considered for this study. The level of Tie2 in plasma was detected using the ELISA technique and immunohistochemistry was performed to measure the expression of Tie2… More >

  • Open Access

    ARTICLE

    Single-dose perioperative mitomycin-C versus thiotepa for low-grade noninvasive bladder cancer

    Kassem Faraj1, Yu-Hui H. Chang2, Kyle M. Rose1, Elizabeth B. Habermann3, David A. Etzioni4, Gail Blodgett1, Erik P. Castle1, Mitchell R. Humphreys1, Mark D. Tyson II1

    Canadian Journal of Urology, Vol.26, No.5, pp. 9922-9930, 2019

    Abstract Introduction: Mitomycin-C (MMC) and thiotepa are intravesical agents effective in reducing the recurrence of low-grade noninvasive bladder cancer when instilled perioperatively. No studies have compared these agents as a single-dose perioperative instillation. This study tests whether there is a difference in recurrence-free survival in patients with low-grade noninvasive bladder cancer who received intravesical MMC versus thiotepa.
    Materials and methods: A retrospective review was performed of patients who underwent cystoscopic excision of a bladder mass identified as a small, low-grade, treatment-naïve, noninvasive, wild-type urothelial carcinoma of the bladder and who received either intravesical thiotepa (30 mg/15 cc) or… More >

  • Open Access

    ARTICLE

    A composite noninvasive index correlates with liver fibrosis scores in post-Fontan patients: Preliminary findings

    William N. Evans1,2, Ruben J. Acherman1,2, Michael L. Ciccolo1,3, Sergio A. Carrillo1,2, Alvaro Galindo1,2, Abraham Rothman1,2, Gary A. Mayman1,2, Elizabeth A. Adams1,2, Leigh C. Reardon1,4, Brody J. Winn5, Noel S. Yumiaco5, Lesley Shimuizu1, Yoko Inanaga1, Rowena J. Deleon1, Humberto Restrepo1,2

    Congenital Heart Disease, Vol.13, No.1, pp. 38-45, 2018, DOI:10.1111/chd.12558

    Abstract Objective: We hypothesized that clinic-based, hepatic-ultrasound, elastography measurements, either alone or in combination with other noninvasive variables, might correlate with liver-biopsy fibrosis scores in patients post-Fontan.
    Methods: Between March 2012 and February 2017, we identified patients post-Fontan that underwent elective cardiac catheterization and simultaneous transvenous hepatic biopsy. From this group, we selected patients that met inclusion criteria for liver-ultrasound, shear-wave elastography. Utilizing the results of elastography, laboratory testing, and time post-Fontan, we constructed a composite Fontan hepatic index as a sum of elastography measurements in kilopascals, model for end-stage liver disease excluding INR scores, and the square… More >

  • Open Access

    ARTICLE

    Ability of noninvasive criteria to predict hemodynamically significant aortic obstruction in adults with coarctation of the aorta

    Marco Astengo1,2*, Caroline Berntsson3*, Åse A. Johnsson3,4, Peter Eriksson1,2, Mikael Dellborg1,2

    Congenital Heart Disease, Vol.12, No.2, pp. 174-180, 2017, DOI:10.1111/chd.12424

    Abstract Objective: Coarctation of the aorta (CoA) is a common condition. Adult patients with newly diagnosed CoA and patients with recurring or residual CoA require evaluation of the severity of aortic obstruction. Cardiac catheterization is considered the gold standard for the evaluation of hemodynamically significant CoA. The European Society of Cardiology (ESC) Guidelines for the management of grown-up congenital heart disease (GUCH) include noninvasive criteria for identifying significant CoA. Our aim was to investigate the ability of the Class I and Class IIa ESC recommendations to identify significant CoA at cardiac catheterization.
    Design: Sixty-six adult patients with native… More >

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