AIMC Topic: Regional Blood Flow

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Splenic and portal venous flow associated with frailty and sarcopenia in older outpatients with cardiovascular disease.

BMC geriatrics May 9, 2025
BACKGROUND: Older patients with cardiovascular disease often experience frailty and sarcopenia. We evaluated whether a reduced blood flow in the splenic and portal vein is associated with frailty and sarcopenia in older patients with cardiovascular d...
Sarcopenia Aged, 80 and over Regional Blood Flow Male Humans Portal Vein Splenic Vein Cardiovascular Diseases Outpatients Female Frailty Aged
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Evaluation of endometrial vascular flow index and echogenicity following experimental induction of subclinical endometritis in dairy cows.

Scientific reports May 8, 2025
This study was conducted aiming to investigate impacts of experimentally induced endometritis on the vascular perfusion and echogenicity of the endometrium in dairy cows. Following estrus synchronization and applying cytological and bacteriological e...
Female Cattle Estrous Cycle Animals Regional Blood Flow Cattle Diseases Ultrasonography Endometritis Endometrium
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Predicting high-flow arteriovenous fistulas and cardiac outcomes in hemodialysis patients.

Journal of vascular surgery Dec 2, 2024
BACKGROUND: Heart failure is common in patients receiving hemodialysis. A high-flow arteriovenous fistula (AVF) may represent a modifiable risk factor for heart failure and death. Currently, no tools exist to assess the risk of developing a high-flow...
Male Middle Aged Heart Failure Humans Risk Assessment Regional Blood Flow Machine Learning Renal Dialysis Blood Flow Velocity Decision Support Techniques Arteriovenous Shunt, Surgical Retrospective Studies Female Time Factors Risk Factors Treatment Outcome Aged Australia Predictive Value of Tests
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Impact of training data composition on the generalizability of convolutional neural network aortic cross-section segmentation in four-dimensional magnetic resonance flow imaging.

Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance Aug 8, 2024
BACKGROUND: Four-dimensional cardiovascular magnetic resonance flow imaging (4D flow CMR) plays an important role in assessing cardiovascular diseases. However, the manual or semi-automatic segmentation of aortic vessel boundaries in 4D flow data int...
Aorta Perfusion Imaging Image Interpretation, Computer-Assisted Bicuspid Aortic Valve Disease Datasets as Topic Blood Flow Velocity Male Middle Aged Case-Control Studies Hemodynamics Deep Learning Aortic Valve Predictive Value of Tests Regional Blood Flow Reproducibility of Results Aged Young Adult Adult Humans Neural Networks, Computer Female
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Convolutional Neural Networks to Study Contrast-Enhanced Magnetic Resonance Imaging-Based Skeletal Calf Muscle Perfusion in Peripheral Artery Disease.

The American journal of cardiology Apr 3, 2024
Peripheral artery disease (PAD) is associated with impaired blood flow in the lower extremities and histopathologic changes of the skeletal calf muscles, resulting in abnormal microvascular perfusion. We studied the use of convolution neural networks...
Humans Magnetic Resonance Imaging Peripheral Arterial Disease Muscle, Skeletal Regional Blood Flow Leg Male Neural Networks, Computer Middle Aged Female Deep Learning Aged Contrast Media
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Tracking and navigation of a microswarm under laser speckle contrast imaging for targeted delivery.

Science robotics Feb 21, 2024
Micro/nanorobotic swarms consisting of numerous tiny building blocks show great potential in biomedical applications because of their collective active delivery ability, enhanced imaging contrast, and environment-adaptive capability. However, in vivo...
Regional Blood Flow Laser-Doppler Flowmetry Laser Speckle Contrast Imaging Robotics
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Quantification of blood flow index in diffuse correlation spectroscopy using a robust deep learning method.

Journal of biomedical optics Jan 27, 2024
SIGNIFICANCE: Diffuse correlation spectroscopy (DCS) is a powerful, noninvasive optical technique for measuring blood flow. Traditionally the blood flow index (BFi) is derived through nonlinear least-square fitting the measured intensity autocorrelat...
Spectroscopy, Near-Infrared Hemodynamics Deep Learning Regional Blood Flow Scalp
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Speed-resolved perfusion imaging using multi-exposure laser speckle contrast imaging and machine learning.

Journal of biomedical optics Mar 20, 2023
SIGNIFICANCE: Laser speckle contrast imaging (LSCI) gives a relative measure of microcirculatory perfusion. However, due to the limited information in single-exposure LSCI, models are inaccurate for skin tissue due to complex effects from e.g. static...
Machine Learning Regional Blood Flow Blood Flow Velocity Laser-Doppler Flowmetry Microcirculation Perfusion Imaging Laser Speckle Contrast Imaging
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Non-invasive regional cerebral blood flow quantification in the 123I-IMP autoradiography using artificial neural network.

PloS one Mar 8, 2023
PURPOSE: Regional cerebral blood flow (rCBF) quantification using 123I-N-isopropyl-p-iodoamphetamine (123I-IMP) requires an invasive, one-time-only arterial blood sampling for measuring the 123I-IMP arterial blood radioactivity concentration (Ca10). ...
Amphetamines Humans Tomography, Emission-Computed, Single-Photon Neural Networks, Computer Cerebrovascular Circulation Brain Autoradiography Retrospective Studies Iofetamine Regional Blood Flow
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Surgical planning of arteriovenous fistulae in routine clinical practice: A machine learning predictive tool.

The journal of vascular access Feb 10, 2023
BACKGROUND: Arteriovenous fistula (AVF) is the preferred vascular access (VA) for hemodialysis, but it is associated with high non-maturation and failure rates. Predicting patient-specific AVF maturation and postoperative changes in blood flow volume...
Female Reproducibility of Results Aged Male Middle Aged Renal Dialysis Time Factors Treatment Outcome Decision Support Techniques Databases, Factual Retrospective Studies Clinical Decision-Making Humans Machine Learning Patient-Specific Modeling Predictive Value of Tests Regional Blood Flow Blood Flow Velocity Arteriovenous Shunt, Surgical Graft Occlusion, Vascular Vascular Patency Upper Extremity Models, Cardiovascular
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