711 results match your criteria: "Medical Imaging Centre.[Affiliation]"

Objectives: Spingosine-1-phosphate (S1P) and ceramides are bioactive sphingolipids that influence cancer cell fate. Anti-ceramide antibodies might inhibit the effects of ceramide. The aim of this study was to assess the potential role of circulating S1P and anti-ceramide antibody as biomarkers in non-small cell lung cancer (NSCLC).

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Purpose: Immunometabolism is pivotal in rheumatoid arthritis (RA) pathogenesis, yet the intricacies of its pathological regulatory mechanisms remain poorly understood. This study explores the complex immunometabolic landscape of RA to identify potential therapeutic targets.

Patients And Methods: We integrated genome-wide association study (GWAS) data involving 1,400 plasma metabolites, 731 immune cell traits, and RA outcomes from over 58,000 participants.

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Obtaining the arterial input function (AIF) is essential for quantitative regional cerebral perfusion (rCBF) measurements using [O]HO PET. However, arterial blood sampling is invasive and complicates the scanning procedure. We propose a new non-invasive dual scan technique with an image derived input function (IDIF) from an additional heart scan.

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Background: Minimizing the duration of mechanical ventilation is one of the most important therapeutic goals during the care of preterm infants at neonatal intensive care units (NICUs). The rate of extubation failure among preterm infants is between 16% and 40% worldwide. Numerous studies have been conducted on the assessment of extubation suitability, the optimal choice of respiratory support around extubation, and the effectiveness of medical interventions.

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Article Synopsis
  • The study investigates the neurobiological factors that make individuals susceptible to fatigue after a mild COVID-19 infection, aiming to understand the link between brain structure and post-COVID neuropsychiatric symptoms.
  • Researchers used neuropsychiatric assessments and MRI scans on individuals who had COVID-19 and a control group to analyze brain regions related to fatigue.
  • Results indicate that specific brain areas, particularly the right dorsolateral prefrontal cortex, are linked to fatigue severity and can predict ongoing fatigue symptoms months after the infection, shedding light on the neural underpinnings of post-COVID conditions.
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Predicting mortality after transcatheter aortic valve replacement using AI-based fully automated left atrioventricular coupling index.

J Cardiovasc Comput Tomogr

January 2025

Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC, USA; Department of Diagnostic and Interventional Radiology, University Medical Center of Johannes Gutenberg-University, Mainz, Germany; German Centre for Cardiovascular Research, Mainz, Germany.

Background: This study aimed to determine whether artificial intelligence (AI)-based automated assessment of left atrioventricular coupling index (LACI) can provide incremental value above other traditional risk factors for predicting mortality among patients with severe aortic stenosis (AS) undergoing coronary CT angiography (CCTA) before transcatheter aortic valve replacement (TAVR).

Methods: This retrospective study evaluated patients with severe AS who underwent CCTA examination before TAVR between September 2014 and December 2020. An AI-prototype software fully automatically calculated left atrial and left ventricular end-diastolic volumes and LACI was defined by the ratio between them.

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The concentrations of nasal nitric oxide (nNO) vary in patients with chronic rhinosinusitis (CRS) supposedly depending upon whether the paranasal ostia are open or obstructed. Our aim was to assess whether nNO levels and their response to topical xylometazoline (a local vasoconstrictor used to alleviate nasal congestion) in patients with CRS differ between those with open or obstructed ostia and if the results were altered by the use of nasal corticosteroids. Methodology: Sixty-six patients with CRS (43% with nasal polyps) or recurrent acute rhinosinusitis and 23 healthy controls were included.

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: We aimed to assess the relationship among circulating extracellular vesicles (EVs), hypoxia-related proteins, and the conventional risk factors of life-threatening coronary artery disease (CAD) to find more precise novel biomarkers. : Patients were categorized based on coronary CT angiography. Patients with a Segment Involvement Score > 5 were identified as CAD patients.

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Incidence and Management of Splanchnic Vein Thrombosis in Pancreatic Diseases.

United European Gastroenterol J

January 2025

Centre for Translational Medicine, Semmelweis University, Budapest, Hungary.

Splanchnic vein thrombosis (SVT) in pancreatic disease has a 20%-30% incidence rate, leading to increased mortality and complication rates. Therefore, the aim of this review is to summarize recent evidence about the incidence, risk factors, and management of pancreatic cancer, pancreatic cystic neoplasm-, and pancreatitis-related SVT. Doppler ultrasound should be the first imaging choice, followed by contrast-enhanced computed tomography or magnetic resonance imaging.

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Onset of pancreatic cancer before and after acute pancreatitis: A multicenter longitudinal cohort study.

Pancreatology

December 2024

Institute of Pancreatic Diseases, Semmelweis University, Budapest, Hungary; Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary; Centre for Translational Medicine, Semmelweis University, Budapest, Hungary; Translational Pancreatology Research Group, Interdisciplinary Centre of Excellence for Research Development and Innovation, University of Szeged, Szeged, Hungary. Electronic address:

Background: Pancreatic cancer (PC) is a leading cause of cancer mortality, often diagnosed at advanced stages. Acute pancreatitis (AP), particularly idiopathic cases, may serve as an early indicator of PC.

Objective: This multicenter cohort study investigated the incidence of PC before and after an AP episode, focusing on idiopathic AP and the role of pseudocysts as potential early markers for PC development.

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Patients with gastrointestinal bleeding (GIB) exhibit varying tolerances to acute blood loss. We aimed to investigate the effect of relative Hb decrease (ΔHb%) on GIB outcomes. Participants enrolled in the Hungarian GIB Registry between 2019 and 2022 were analyzed.

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Background: Immune checkpoint inhibitors (ICIs) can induce immune-related adverse events (irAEs). This study investigates the relationship between CT-assessed sarcopenia and irAEs in patients with lung cancer who are receiving ICIs.

Methods: Patients were enrolled if they had lung cancer treated with ICIs at the University Medical Center Groningen (2015-2021) and had undergone low-dose CT scans that included the third lumbar vertebral level (L3).

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Cardiac surgery with valve replacement temporarily disrupts the hippocampal memory network.

Br J Anaesth

December 2024

Department of Anaesthesiology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China; Department of Cardiovascular Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China. Electronic address:

Article Synopsis
  • The study investigates the impact of systemic inflammation from heart valve replacement surgery on cognitive function, particularly focusing on how valvular heart disease and inflammation influence memory and brain connectivity.
  • It involved 43 patients with valvular heart disease and 30 healthy controls, assessing cognitive performance, inflammation levels, and brain connectivity before and after surgery using MRI and blood tests.
  • Results indicated that surgery led to temporary memory decline and altered connectivity in the hippocampus, with recovery observed 30 days post-surgery, while higher inflammation correlated with worse memory performance.
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Objectives: Numerous studies have been conducted on the adaptation of dental restorations fabricated by additive (AM) and subtractive manufacturing (SM); however, the results are conflicting. This systematic review and meta-analysis aimed to evaluate the fit and trueness of fixed restorations made by AM compared to SM.

Data: Studies investigating internal fit, marginal fit, and trueness of fixed prostheses were involved.

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Molar-incisor hypomineralization (MIH) is an enamel defect affecting molars and incisors, often leading to hypersensitivity, enamel breakdown, and increased caries risk. Non-invasive treatments, such as casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) and fluoride varnish, show potential in remineralizing affected enamel and reducing sensitivity, but their efficacy is still debated. This study systematically reviews and analyzes the effectiveness of CPP-ACP and other non-invasive agents in improving remineralization and reducing hypersensitivity in MIH-affected teeth.

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Fibrosis is one of the key healing responses to injury, especially within the heart where it helps to maintain structural integrity following acute insults such as myocardial infarction. However, if it becomes dysregulated then fibrosis can become maladaptive leading to adverse remodelling, impaired cardiac function and heart failure. Fibroblast activation protein is exclusively expressed by activated fibroblasts, the key effector cells of fibrogenesis, and has a unique extracellular domain that is an ideal ligand for novel molecular imaging probes.

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Understanding the Role of Different ERCP Techniques in Post-Roux-en-Y Gastric Bypass Patients: a Systematic Review and Meta-analysis.

Obes Surg

January 2025

Department of Surgery, Transplantation and Gastroenterology, Division of Interventional Gastroenterology, Semmelweis University, Üllői Út 78, 1082, Budapest, Hungary.

Article Synopsis
  • The study compared three techniques for ERCP (endoscopic retrograde cholangiopancreatography) in patients who had undergone Roux-en-Y gastric bypass: enteroscopy-assisted (EA-ERCP), laparoscopy-assisted (LA-ERCP), and endoscopic ultrasound-directed (EDGE).
  • 67 studies were analyzed, showing that EDGE had the highest technical success rate at 96%, followed by LA-ERCP at 93%, and EA-ERCP at 77%, with significant differences between EA-ERCP and the other methods.
  • The overall rates of adverse events were similar across all techniques, suggesting that EDGE and LA-ERCP are both effective and as safe
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Micrognathia and cleft palate as a cause of obstructive sleep apnoea in infants.

Acta Paediatr

December 2024

Department of Plastic Surgery, Cleft and Craniofacial Centre Husuke, Helsinki University Central Hospital, Helsinki, Finland.

Aim: Obstructive sleep apnoea (OSA) is common in Robin sequence (RS). We investigated the significance of micrognathia, cleft palate and sleep positioning on OSA in infants.

Methods: We analysed our 13-year national reference centre polysomnography (PSG) dataset.

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Background: The long-term prevalence of clinically significant prostate cancer (csPCa) in patients with initial negative prostate biopsy is unknown.

Purpose: To investigate the rate of csPCa of men with initial negative biopsy.

Study Type: Retrospective analysis of prospectively collected data.

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Intra-individual radiomic analysis of pericoronary adipose tissue: Photon-counting detector vs energy-integrating detector CT angiography.

Int J Cardiol

February 2025

Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC, USA; Department of Medical Surgical Sciences and Translational Medicine, Sapienza University of Rome, Italy. Electronic address:

Background: The impact of novel photon-counting detector (PCD)-CT technology on in-vivo radiomics is not fully understood. This study aimed to compare the intra-individual stability and reproducibility of pericoronary adipose tissue (PCAT) radiomic features between PCD-CT and energy-integrating detector (EID)-CT in patients undergoing coronary CT angiography (CCTA) on both systems.

Methods: Patients undergoing clinically indicated CCTA on an EID-CT were prospectively enrolled for research PCD-CCTA within 30 days.

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We determined the effects of knee joint position on the relationship between maximal voluntary contraction (MVC) isometric plantar flexor torque and architectural properties of the plantar flexors measured at rest in healthy young adults. We obtained 3-D reconstructed muscle architecture data of the right plantar flexor muscles of nine physically active males using T1 and DTI MRI sequences with the knee in ∼5° flexion and at rest. Muscle volume, fascicle length, pennation angle, and physiological cross-sectional area were estimated for the medial and lateral gastrocnemius and the soleus muscle.

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Neuronal oscillations are ubiquitous in brain activity at all scales and their synchronization dynamics are essential for information processing in neuronal systems. The underlying synaptic mechanisms, while mainly based on GABA- and glutamatergic neurotransmission, are influenced by neuromodulatory systems that have highly variable densities of neurotransmitter receptors and transporters across the cortical mantle. How they constrain the network structures of interacting oscillations has remained a central unaddressed question.

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Cost-effectiveness of ultrahigh-resolution photon-counting detector coronary CT angiography for the evaluation of stable chest pain.

J Cardiovasc Comput Tomogr

November 2024

Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Augsburg, 2 Stenglinstraße, Augsburg 86156, Germany.

Background: The increased specificity of ultrahigh-resolution (UHR) photon-counting detector (PCD)-CT over energy-integrating detector (EID)-CT for coronary CT angiography (CCTA) could defer unwarranted downstream tests. The objective of the study was to simulate the cost-effectiveness of UHR CCTA in stable chest pain patients with coronary calcifications.

Methods: A decision and simulation model was developed using Monte Carlo simulations with 1000 bootstrap resamples to estimate the costs associated with PCD-CT in lieu of EID-CT for CCTA and the referral for subsequent testing.

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Introduction: Low gradient (LG) aortic stenosis (AS) poses a diagnostic challenge. Aortic valve calcium score (AVCS) assessment has emerged as a complementary diagnostic method when echocardiography provides discordant results. However, the diagnostic and prognostic value of AVCS in LGAS has not been thoroughly studied.

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