Publications by authors named "Fotiadis D"

Introduction: Heart failure (HF) is a complex clinical syndrome. Accurate risk stratification and early diagnosis of HF are challenging as its signs and symptoms are non-specific. We propose to address this global challenge by developing the STRATIFYHF artificial intelligence-driven decision support system (DSS), which uses novel analytical methods in determining the risk, diagnosis and prognosis of HF.

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Objectives: To assess if isolated mouth or eye dryness constitutes distinct clinical phenotypes in Sjögren's disease (SjD).

Methods: We analysed 1765 patients meeting the 2016 ACR-EULAR SjD criteria, followed up at four centres in Greece and Italy (Universities of Pisa, Italy, and Athens, Harokopion, and Ioannina, Greece). Patients with isolated mouth or eye dryness were identified and matched 1:2 with those experiencing both symptoms, according to age at SjD diagnosis, gender, and disease duration.

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Background: In medical imaging, 3D visualization is vital for displaying volumetric organs, enhancing diagnosis and analysis. Multiplanar reconstruction (MPR) improves visual and diagnostic capabilities by transforming 2D images from computed tomography (CT) and magnetic resonance imaging into 3D representations. Web-based Digital Imaging and Communications in Medicine (DICOM) viewers integrated into picture archiving and communication systems facilitate access to pictures and interaction with remote data.

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  • * The researchers improved their modeling techniques by incorporating varying mechanical properties in the artery walls and recognizing different plaque types, leading to more realistic simulations reflecting real-life conditions.
  • * Results showed that the new simulation framework accurately predicted clinical outcomes, with less than 15% error in lumen area recovery, making it a valuable tool for understanding stent performance in overstretched arteries.
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. Open reduction internal fixation (ORIF) and external fixation are traditional surgical techniques for treating type VI Schatzker tibial plateau fractures. A newly developed technique integrates the intramedullary tibial nail with condylar bolts.

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Background: The Finnish Geriatric Intervention Study to Prevent Cognitive Impairment and Disability (FINGER) multimodal lifestyle intervention yielded cognitive and other health benefits in older adults at risk of cognitive decline. The two-year multinational randomized controlled LETHE trial evaluates the feasibility of a digitally supported, adapted FINGER intervention among at-risk older adults. Technology is used to complement in-person activities, streamline the intervention delivery, personalize recommendations, and collect digital biomarkers.

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The evolution of information and communication technologies has affected all fields of science, including health sciences. However, the rate of technological innovation adoption by the healthcare sector has been historically slow, compared to other industrial sectors. Innovation in computer modeling and simulation approaches has changed the landscape in biomedical applications and biomedicine, paving the way for their potential contribution in reducing, refining, and partially replacing animal and human clinical trials.

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  • This study investigates how different feature selection methods, machine learning classifiers, and radiomic feature sources influence the accuracy of models predicting clinically significant prostate cancer from MRI data.
  • Two datasets containing 465 and 204 patients allowed for the extraction of 1246 radiomic features, and 480 models were evaluated using various metrics, with the best-performing models leveraging specific feature selection methods and classifiers.
  • The findings highlight the importance of selecting the right feature selection method and source of radiomic features, as they significantly impact model performance for diagnosing prostate cancer.
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  • Cerebrovascular events like strokes can often be predicted by assessing the rupture of plaques in the carotid arteries, and this study introduces a new method combining computational fluid dynamics, structural analysis, and machine learning to improve risk predictions.
  • The research utilized 3D imaging and blood flow simulations on data from 134 asymptomatic patients, integrating both imaging and clinical data to evaluate the risk of carotid atherosclerosis more effectively.
  • The developed model, a Gradient Boosting Tree classifier, demonstrated strong performance metrics: 88% balanced accuracy, a ROC AUC of 0.92, and high sensitivity and specificity, showing great promise for enhancing clinical decision-making and patient outcomes in stroke prevention.
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  • The study explored the use of the HOLOBalance platform, which employs augmented reality holograms for providing multisensory physiotherapy to older adults at risk of falls.
  • A pilot randomised controlled trial showed that the platform was safe, feasible, and well-accepted, with 69% of participants recommending it.
  • Participants demonstrated significant improvements in functional gait and balance (measured through FGA and Mini BESTest), outperforming the traditional OTAGO programme.
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Aims: Coronary artery disease (CAD) is a highly prevalent disease with modifiable risk factors. In patients with suspected obstructive CAD, evaluating the pre-test probability model is crucial for diagnosis, although its accuracy remains controversial. Machine learning (ML) predictive models can help clinicians detect CAD early and improve outcomes.

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  • * The research involved 73 adult PwT1D patients, measuring various factors such as body weight, BMI, and glycaemic indices using continuous glucose monitoring (CGM).
  • * Results showed no significant differences in glycaemic control between normal weight, overweight, and obese patients, but a healthy body weight was still linked to better overall glycaemic management.
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Glucose is the primary source of energy for many organisms and is efficiently taken up by bacteria through a dedicated transport system that exhibits high specificity. In Escherichia coli, the glucose-specific transporter IICB serves as the major glucose transporter and functions as a component of the phosphoenolpyruvate-dependent phosphotransferase system. Here, we report cryo-electron microscopy (cryo-EM) structures of the glucose-bound IICB protein.

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  • This study investigates the link between non-Hodgkin lymphomas, specifically MALT lymphomas, and Sjögren's disease, aiming to find predictors for lymphoma development in patients with this autoimmune condition.
  • Researchers conducted a case-control study with patients from three universities in Italy and Greece, comparing those with Sjögren's disease-associated MALT lymphoma to matched controls without lymphoma.
  • By analyzing data at three key timepoints related to lymphomagenesis progression, the study sought to establish reliable predictors for the onset of lymphoma in patients already diagnosed with Sjögren's disease.
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Microbial ion-pumping rhodopsins (MRs) are extensively studied retinal-binding membrane proteins. However, their biogenesis, including oligomerisation and retinal incorporation, remains poorly understood. The bacterial green-light absorbing proton pump proteorhodopsin (GPR) has emerged as a model protein for MRs and is used here to address these open questions using cryo-electron microscopy (cryo-EM) and molecular dynamics (MD) simulations.

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Synthetic data generation has emerged as a promising solution to overcome the challenges which are posed by data scarcity and privacy concerns, as well as, to address the need for training artificial intelligence (AI) algorithms on unbiased data with sufficient sample size and statistical power. Our review explores the application and efficacy of synthetic data methods in healthcare considering the diversity of medical data. To this end, we systematically searched the PubMed and Scopus databases with a great focus on tabular, imaging, radiomics, time-series, and omics data.

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Prostate cancer diagnosis and treatment relies on precise MRI lesion segmentation, a challenge notably for small (<15 mm) and intermediate (15-30 mm) lesions. Our study introduces ProLesA-Net, a multi-channel 3D deep-learning architecture with multi-scale squeeze and excitation and attention gate mechanisms. Tested against six models across two datasets, ProLesA-Net significantly outperformed in key metrics: Dice score increased by 2.

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Background: There has been a large discussion in literature regarding the proper management of asymptomatic patients with significant carotid artery stenosis. This study aims to identify potential risk factors associated with high-risk carotid plaques.

Methods: This is a retrospective study based on a prospective database.

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Background And Objective: Systemic autoinflammatory diseases (SAIDs) are characterized by widespread inflammation, but for most of them there is a lack of specific biomarkers for accurate diagnosis. Although a number of machine learning algorithms have been used to analyze SAID datasets, aiding in the discovery of novel biomarkers, there is a growing recognition of the importance of SAID timeseries clustering, as it can capture the temporal dynamics of gene expression patterns.

Methodology: This paper proposes a novel clustering methodology to efficiently associate three-dimensional data.

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Artificial intelligence (AI) is revolutionizing the field of medical imaging, holding the potential to shift medicine from a reactive "sick-care" approach to a proactive focus on healthcare and prevention. The successful development of AI in this domain relies on access to large, comprehensive, and standardized real-world datasets that accurately represent diverse populations and diseases. However, images and data are sensitive, and as such, before using them in any way the data needs to be modified to protect the privacy of the patients.

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Image quality assessment of magnetic resonance imaging (MRI) data is an important factor not only for conventional diagnosis and protocol optimization but also for fairness, trustworthiness, and robustness of artificial intelligence (AI) applications, especially on large heterogeneous datasets. Information on image quality in multi-centric studies is important to complement the contribution profile from each data node along with quantity information, especially when large variability is expected, and certain acceptance criteria apply. The main goal of this work was to present a tool enabling users to assess image quality based on both subjective criteria as well as objective image quality metrics used to support the decision on image quality based on evidence.

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Background: Unhealthy behavior increases the risk of dementia. Various socio-cognitive determinants influence whether individuals persist in or alter these unhealthy behaviors.

Objective: This study identifies relevant determinants of behavior associated to dementia risk.

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A popular and widely suggested measure for assessing unilateral hand motor skills in stroke patients is the box and block test (BBT). Our study aimed to create an augmented reality enhanced version of the BBT (AR-BBT) and evaluate its correlation to the original BBT for stroke patients. Following G-power analysis, clinical examination, and inclusion-exclusion criteria, 31 stroke patients were included in this study.

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