Publications by authors named "Marcin Grzegorzek"

A personalized low-glycemic diet, maintaining stable blood glucose levels, aids in weight reduction and managing (pre-)diabetes and migraines in individuals. However, invasiveness, high cost, and limited lifecycle of continuous glucose monitoring (CGM) devices restrict their widespread use. To address these issues, we investigated machine learning (ML) approaches for glucose monitoring using data from non-invasive wearables.

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Objective: To explore the predictive value of intratumoral habitat heterogeneity for the early therapeutic response to neoadjuvant chemotherapy (NACT) in patients with high-grade serous ovarian cancer (HGSOC).

Materials And Methods: A total of 258 patients with HGSOC receiving [F]fluorodeoxyglucose ([F]FDG) PET/CT followed by NACT were enrolled and classified into a response group and a non-response group according to RECIST 1.1.

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Background And Objective: Heart rate variability (HRV) is a prognostic marker in numerous cardiovascular and non-cardiovascular conditions. Valvular heart disease (VHD) is a cardiovascular disease that affects the heart valves (aortic valve, mitral valve, pulmonic valve and tricupsid valve) and is the third most common cardiovascular disease. Traditional methods, such as echocardiography, computed tomography, and magnetic resonance imaging, are effective, but their limitations in outpatient monitoring have led to the exploration of alternative techniques, such as electrocardiography (ECG), seismocardiography (SCG) and gyrocardiography (SCG).

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Diffusion models, a class of deep learning models based on probabilistic generative processes, progressively transform data into noise and then reconstruct the original data through an inverse process. Recently, diffusion models have gained attention in microscopic image analysis for their ability to process complex data, extract valuable information, and enhance image quality. This review provides an overview of diffusion models in microscopic images and micro-alike images, focusing on three commonly used models: DDPM, DDIM, and SDEs.

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Background: is widely used in Traditional Chinese Medicine and dietary supplements to tonify the kidney, lung, and heart, as well as to calm the mind. The fermentation broth of (FBCS), containing cordycepin, has shown potential in various healthcare applications.

Methods: Ninety patients with primary insomnia were divided into two groups: the FBCS group ( = 45) and the control group ( = 45).

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Introduction: The complexity of Parkinson's disease (PD) symptoms and the necessity for individualised, multidisciplinary and digital health technology-based care are widely acknowledged; however, access to specialist care remains limited, particularly in rural areas. Current healthcare systems are frequently ill-equipped to deliver timely, personalised interventions. In response to these challenges, the ParkProReakt project aims to enhance PD care through a proactive, technology-enabled, multidisciplinary approach designed to improve patient health-related quality of life (HRQoL) and alleviate caregiver burden.

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There is increasing evidence that white matter fibres play an important role in tinnitus. A directed bilateral Mendelian randomization (MR) analysis based on genome-wide association studies (GWAS) has been implemented to explore the impact of idiopathic tinnitus on the brain white matter (WM) integrity of different severity and stages at a causal level. The tinnitus-related GWAS is derived from the research of 117,882 European participants, which contains accounts of tinnitus at different severities and stages.

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Background and objectiveCOVID-19 is considered as the biggest global health disaster in the 21st century, and it has a huge impact on the world.MethodsThis paper publishes a publicly available dataset of CT images of multiple types of pneumonia (COVID-19CT+). Specifically, the dataset contains 409,619 CT images of 1333 patients, with subset-A containing 312 community-acquired pneumonia cases and subset-B containing 1021 COVID-19 cases.

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Purpose: Observational studies suggest white matter (WM) microstructural anomalies are linked to bulimia nervosa (BN), but a direct causal relationship remains unestablished. This study aimed to investigate the causal impact of BN on WM microstructure.

Methods: We analyzed genome-wide association study (GWAS) summary data from 2442 individuals to identify genetically predicted BN.

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Background: Artificial intelligence (AI) has the potential to transform cancer diagnosis, ultimately leading to better patient outcomes.

Objective: We performed an umbrella review to summarize and critically evaluate the evidence for the AI-based imaging diagnosis of cancers.

Methods: PubMed, Embase, Web of Science, Cochrane, and IEEE databases were searched for relevant systematic reviews from inception to June 19, 2024.

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Recent advancements in hardware technology have spurred a surge in the popularity and ubiquity of wearable sensors, opening up new applications within the medical domain. This proliferation has resulted in a notable increase in the availability of Time Series (TS) data characterizing behavioral or physiological information from the patient, leading to initiatives toward leveraging machine learning and data analysis techniques. Nonetheless, the complexity and time required for collecting data remain significant hurdles, limiting dataset sizes and hindering the effectiveness of machine learning.

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Few-shot Class-incremental Pill Recognition (FSCIPR) aims to develop an automatic pill recognition system that requires only a few training data and can continuously adapt to new classes, providing technical support for applications in hospitals, portable apps, and assistance for visually impaired individuals. This task faces three core challenges: overfitting, fine-grained classification problems, and catastrophic forgetting. We propose the Well-Prepared Few-shot Class-incremental Learning (WP-FSCIL) framework, which addresses overfitting through a parameter-freezing strategy, enhances the robustness and discriminative power of backbone features with Center-Triplet (CT) loss and supervised contrastive loss for fine-grained classification, and alleviates catastrophic forgetting using a multi-dimensional Knowledge Distillation (KD) strategy based on flexible Pseudo-feature Synthesis (PFS).

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Brain aging is an inevitable process in adulthood, yet there is a lack of objective measures to accurately assess its extent. This study aims to develop brain age prediction model using magnetic resonance imaging (MRI), which includes structural information of gray matter and integrity information of white matter microstructure. Multiparameter MRI was performed on two population cohorts.

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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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Article Synopsis
  • 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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Article Synopsis
  • - 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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Article Synopsis
  • - 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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Article Synopsis
  • 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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Article Synopsis
  • 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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