Results 131 to 140 of about 3,345,378 (306)

QQ‐Based Oxygen Extraction Fraction (OEF) Mapping in Mouse Brain: Initial Experience

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Oxygen extraction fraction (OEF) is a vital biomarker of cerebral oxygen metabolism and tissue viability. A novel OEF mapping method, QQ, which combines quantitative susceptibility mapping (QSM) and quantitative blood oxygen level‐dependent (qBOLD) (QSM + qBOLD = QQ), has demonstrated promise in detecting disease‐related OEF ...
Quinn Boyer, Dongkyu Lee, Tian Qiu, HyungJoon Cho, Junghun Cho   +4 more
wiley   +1 more source

Independent Component Analysis for Non‐Contrast‐Enhanced Free‐Breathing Pulmonary Ventilation and Perfusion MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To introduce a robust approach for non‐contrast‐enhanced free‐breathing functional lung MRI based on independent component analysis (ICA), addressing key limitations of standard methods such as sensitivity to irregular breathing or irregular heartbeat.
Laura Rozo Pardo, Rabea Klaar, Enrico Schulz, Moritz Rabe, Christopher Kurz, Guillaume Landry, Jens Ricke, Bastian Sabel, Olaf Dietrich   +8 more
wiley   +1 more source

Diagnosis of Portal Hypertension: Advancing Towards Non‐Invasive Solutions

Portal Hypertension &Cirrhosis, EarlyView.
This review systematically summarizes a full spectrum of non‐invasive diagnostic approaches for portal hypertension (PH), including imaging modalities, elastography, serum biomarkers, composite scoring systems and endoscopic ultrasound‐guided portal pressure gradient (EUS‐PPG), and analyzes their performance across different liver disease etiologies ...
Lijia Yin, Huikuan Chu, Ling Yang
wiley   +1 more source

Breathless on Standing: Hepatopulmonary Syndrome in Chronic Liver Disease

Annals of Internal Medicine: Clinical Cases
In patients with chronic liver disease, positional dyspnea (platypnea) and desaturation (orthodeoxia) should prompt immediate evaluation. Although the differential diagnosis includes many cardiopulmonary disorders, platypnea-orthodeoxia raises concern ...
Kamel Alachraf, Matthew Brunner, Rabea Baatya   +2 more
doaj   +1 more source

Impaired matching of perfusion and ventilation in heart failure detected by 133xenon

, 1996
In severe chronic heart failure (CHF) the ventilatory cost of CO2 elimination during exercise (VE/VCO 2) is increased, suggesting ventilation/perfusion (V/Q) mismatch.
Evans, W. D., Henderson, A. H., Facey, P. E., Lewis, N. P., Shyam Sundar, A., Cooper, J. P., Banning, A. P., N. P. Lewis, J. P. Cooper, A. Shyam Sundar, P. E. Facey, W. D. Evans, A. H. Henderson, A. P. Banning   +13 more
core   +1 more source

Pregnancy in CTD‐interstitial lung disease: Current evidence, clinical challenges, and a proposed management algorithm

Rheumatology &Autoimmunity, EarlyView.
Summary of pregnancy management in CTD‐ILD across preconception, antenatal, and postpartum phases, emphasizing risk stratification and multidisciplinary care. 6MWT, 6‐min walk test; CTD‐ILD: connective tissue disease‐interstitial lung disease; DLCO, diffusion capacity of the lung for carbon monoxide; FVC, forced vital capacity; MDT, multidisciplinary ...
Khaled Aldhuaina, Ghaydaa Aldabie, Mohammad Abdulsalam, Ali Jawad   +3 more
wiley   +1 more source

Enhanced glomerular thrombosis in pronated animals with ARDS

Intensive Care Medicine Experimental
Background Prone positioning is part of the management of acute respiratory distress syndrome (ARDS) and has been demonstrated to successfully improve the ventilation–perfusion match and reduce mortality in patients with severe respiratory failure ...
Silvia Marchesi, Elin Lundström, Elin Lindström, Jonas Ödmark, Mark Lubberink, Håkan Ahlström, Miklós Lipcsey   +6 more
doaj   +1 more source

Intelligent Continuum Micromachines in Complex Confined Spaces

SmartBot, EarlyView.
The cover depicts a conceptual design for an intelligent continuum micromachine entering a target capsule used in fusion‐energy research through its slender gas‐fill tube. By combining route‐adaptive deformation, embedded sensing, and a functional end effector, the robot could inspect hidden defects, assess local conditions, and support localized ...
Huayang Sai, Yunyue Yang, Shuxing Xu, Jinbo Hu, Jiliang Wang, Zhehao Gan, Wei Tang, Tian‐Yun Huang   +7 more
wiley   +1 more source

A nomogram model based on clinical and 3D-EIT parameters for CTEPH diagnosis

Respiratory Research
Background Chronic thromboembolic pulmonary hypertension (CTEPH) is easily misdiagnosed. Three-dimensional (3D) electrical impedance tomography (EIT) can monitor the whole-lung perfusion at the bedside.
Jian Xu, Yuhan Wang, Ying Gong, Lu Wang, Yuanlin Song, Xu Wu   +5 more
doaj   +1 more source

Microplastics and the Endocrine–Metabolic Interface: Novel Diagnostic Tools Targeting Thyroid–Adipose Axis

Environmental Toxicology, EarlyView.
ABSTRACT Microplastics (MPs) have been identified as major environmental contaminants that can affect organisms directly and act as carriers of particles and chemical additives, thereby aggravating endocrine networks that coordinate metabolic homeostasis.
Sunday Amos Onikanni, Babasola Aiyeku, Marjorie Dardis Murucci, Temitope Aribigbola, Kenia Bispo, Oluwatosin Stella Olayinka, Rômulo Sperduto Dezonne, Sara Gemini Piperni, Paula Soares, Denise Pires de Carvalho, Leandro Miranda‐Alves   +10 more
wiley   +1 more source