Publications by authors named "Marcin Grzegorzek"

In recent years, immune checkpoint inhibitors (ICIs) has emerged as a fundamental component of the standard treatment regimen for patients with head and neck squamous cell carcinoma (HNSCC). However, accurately predicting the treatment effectiveness of ICIs for patients at the same TNM stage remains a challenge. In this study, we first combined multi-omics data (mRNA, lncRNA, miRNA, DNA methylation, and somatic mutations) and 10 clustering algorithms, successfully identifying two distinct cancer subtypes (CSs) (CS1 and CS2).

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Parkinson's disease is characterized by motor and cognitive deficits. While previous work suggests a relationship between both, direct empirical evidence is scarce or inconclusive. Therefore, we examined the relationship between walking features and executive functioning in patients with Parkinson's disease using state-of-the-art machine learning approaches.

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  • This study investigates the relationship between bulimia nervosa (BN) and functional connectivity (FC) within brain networks using a method called Mendelian randomization, which relies on genetic data for causation analysis.
  • Analyzed data included genome-wide association studies (GWAS) of 2,564 individuals and functional magnetic resonance imaging (fMRI) parameters sourced from the UK Biobank.
  • Findings indicate that BN has a causal influence on FC not only between large-scale brain networks (like the visual and default mode networks) but also within specific networks, suggesting BN alters brain connectivity patterns.
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Gesture recognition has become a significant part of human-machine interaction, particularly when verbal interaction is not feasible. The rapid development of biomedical sensing and machine learning algorithms, including electromyography (EMG) and convolutional neural networks (CNNs), has enabled the interpretation of sign languages, including the Polish Sign Language, based on EMG signals. The objective was to classify the game control gestures and Polish Sign Language gestures recorded specifically for this study using two different data acquisition systems: BIOPAC MP36 and MyoWare 2.

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  • - The research focuses on developing a clinical model to predict which patients undergoing posterior lumbar interbody fusion (PLIF) for lumbar spinal stenosis are likely to experience prolonged surgical times, which can lead to complications and affect recovery.
  • - A total of 3,233 patients from 22 hospitals in China from 2015 to 2022 were included in the study, and their data was analyzed using machine-learning techniques to identify key factors associated with longer surgery durations.
  • - The study utilized a training cohort and four test groups, applying various algorithms and performance evaluations to create a predictive model, ultimately aiming to enhance patient safety and surgical outcomes.
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In the evolving field of human-computer interaction (HCI), gesture recognition has emerged as a critical focus, with smart gloves equipped with sensors playing one of the most important roles. Despite the significance of dynamic gesture recognition, most research on data gloves has concentrated on static gestures, with only a small percentage addressing dynamic gestures or both. This study explores the development of a low-cost smart glove prototype designed to capture and classify dynamic hand gestures for game control and presents a prototype of data gloves equipped with five flex sensors, five force sensors, and one inertial measurement unit (IMU) sensor.

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Access to large amounts of data is essential for successful machine learning research. However, there is insufficient data for many applications, as data collection is often challenging and time-consuming. The same applies to automated pain recognition, where algorithms aim to learn associations between a level of pain and behavioural or physiological responses.

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Background: Pneumonia and lung cancer have a mutually reinforcing relationship. Lung cancer patients are prone to contracting COVID-19, with poorer prognoses. Additionally, COVID-19 infection can impact anticancer treatments for lung cancer patients.

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  • - The study aimed to develop an AI model using Multi-Task Learning (MTL) to predict important clinical factors for cervical cancer, such as stage, histology, grade, and lymph node metastasis (LNM) before surgery.
  • - Researchers used a total of 281 cervical cancer cases across training and validation periods, employing an Artificial Neural Network (ANN) to achieve high prediction accuracy rates, notably 95% for histology and 86% for grade, while significantly reducing prediction time compared to traditional methods.
  • - Findings indicated that the AI model outperformed Single-Task Learning approaches in accuracy and efficiency, suggesting it could be a valuable tool for preoperative assessments in cervical cancer management.
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  • The study investigates the metabolome and lipidome profiles of patients with primary sclerosing cholangitis (PSC) to aid in diagnosis and personalized treatment.
  • Using NMR spectroscopy, researchers analyzed 33 PSC patients and found distinctive metabolic changes compared to healthy controls and patients with inflammatory bowel disease (IBD).
  • Key findings include higher levels of pyruvic acid and certain lipoprotein subfractions in PSC patients, which could enhance the differentiation of PSC from IBD and other related conditions.
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  • The study addresses the link between obesity-induced metabolic syndrome and cardiovascular disease by creating and publishing a new dataset, the Abdominal Adipose Tissue CT Image Dataset (AATCT-IDS), which consists of 300 subjects and over 13,000 raw CT slices to aid in research.
  • Researchers annotated specific adipose tissue regions in the dataset to validate image denoising methods, train segmentation models, and conduct radiomics studies, providing a foundation for various analyses.
  • Findings indicate significant differences in effectiveness among different image denoising and segmentation methods, while the radiomics study uncovers three distinct adipose distributions in the population, demonstrating the dataset's research potential.
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Background And Objective: Intracerebral hemorrhage is one of the diseases with the highest mortality and poorest prognosis worldwide. Spontaneous intracerebral hemorrhage (SICH) typically presents acutely, prompt and expedited radiological examination is crucial for diagnosis, localization, and quantification of the hemorrhage. Early detection and accurate segmentation of perihematomal edema (PHE) play a critical role in guiding appropriate clinical intervention and enhancing patient prognosis.

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The diagnosis of cancer is typically based on histopathological sections or biopsies on glass slides. Artificial intelligence (AI) approaches have greatly enhanced our ability to extract quantitative information from digital histopathology images as a rapid growth in oncology data. Gynecological cancers are major diseases affecting women's health worldwide.

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Background: Endometrial cancer is one of the most common tumors in the female reproductive system and is the third most common gynecological malignancy that causes death after ovarian and cervical cancer. Early diagnosis can significantly improve the 5-year survival rate of patients. With the development of artificial intelligence, computer-assisted diagnosis plays an increasingly important role in improving the accuracy and objectivity of diagnosis and reducing the workload of doctors.

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A benchmark histopathological Hematoxylin and Eosin (H&E) image dataset for Cervical Adenocarcinoma (CAISHI), containing 2240 histopathological images of Cervical Adenocarcinoma (AIS), is established to fill the current data gap, of which 1010 are images of normal cervical glands and another 1230 are images of cervical AIS. The sampling method is endoscope biopsy. Pathological sections are obtained by H&E staining from Shengjing Hospital, China Medical University.

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This paper addresses the problem of feature encoding for gait analysis using multimodal time series sensory data. In recent years, the dramatic increase in the use of numerous sensors, e.g.

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Signal quality significantly affects the processing, analysis, and interpretation of biomedical signals. There are many procedures for assessing signal quality that use averaged numerical values, thresholding, analysis in the time or frequency domain, or nonlinear approaches. An interesting approach to the assessment of signal quality is using symmetric projection attractor reconstruction (SPAR) analysis, which transforms an entire signal into a two-dimensional plot that reflects the waveform morphology.

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The development of information and communication technologies (ICT) changed many aspects of our lives, including cardiovascular research. This area of research is affected by the availability of open databases that can help conduct basic and applied research. In this study, we summarize the current state of knowledge in publicly available signal databases with seismocardiographic (SCG) signals in January 2023.

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Type 2 diabetes mellitus (T2D) poses a significant global health challenge and demands effective self-management strategies, including continuous blood glucose monitoring (CGM) and lifestyle adaptations. While CGM offers real-time glucose level assessment, the quest for minimizing trauma and enhancing convenience has spurred the need to explore non-invasive alternatives for monitoring vital signs in patients with T2D. This systematic review is the first that explores the current literature and critically evaluates the use and reporting of non-invasive wearable devices for monitoring vital signs in patients with T2D.

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In recent years, there is been a growing reliance on image analysis methods to bolster dentistry practices, such as image classification, segmentation and object detection. However, the availability of related benchmark datasets remains limited. Hence, we spent six years to prepare and test a bench Oral Implant Image Dataset (OII-DS) to support the work in this research domain.

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Introduction: Imprecise nutritional recommendations due to a lack of diagnostic test accuracy are a frequent problem for individuals with adverse reactions to foods but no precise diagnosis. Consequently, patients follow very broad and strict elimination diets to avoid uncontrolled symptoms such as diarrhoea and abdominal pain. Dietary limitations and the uncertainty of developing gastrointestinal symptoms after the inadvertent ingestion of food have been demonstrated to reduce the quality of life (QoL) of affected individuals and subsequently might increase the risk of malnutrition and intestinal dysbiosis.

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Machine learning with deep neural networks (DNNs) is widely used for human activity recognition (HAR) to automatically learn features, identify and analyze activities, and to produce a consequential outcome in numerous applications. However, learning robust features requires an enormous number of labeled data. Therefore, implementing a DNN either requires creating a large dataset or needs to use the pre-trained models on different datasets.

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Multiple attempts to quantify pain objectively using single measures of physiological body responses have been performed in the past, but the variability across participants reduces the usefulness of such methods. Therefore, this study aims to evaluate whether combining multiple autonomic parameters is more appropriate to quantify the perceived pain intensity of healthy subjects (HSs) and chronic back pain patients (CBPPs) during experimental heat pain stimulation. HS and CBPP received different heat pain stimuli adjusted for individual pain tolerance via a CE-certified thermode.

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