AIMC Topic: Regional Blood Flow

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Generating retinal flow maps from structural optical coherence tomography with artificial intelligence.

Scientific reports Apr 5, 2019
Despite advances in artificial intelligence (AI), its application in medical imaging has been burdened and limited by expert-generated labels. We used images from optical coherence tomography angiography (OCTA), a relatively new imaging modality that...
Angiography Retinal Vessels Deep Learning Tomography, Optical Coherence Regional Blood Flow Retinal Diseases Humans Diabetic Retinopathy Artificial Intelligence
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Comparison of Machine-Learning Classification Models for Glaucoma Management.

Journal of healthcare engineering Jun 19, 2018
This study develops an objective machine-learning classification model for classifying glaucomatous optic discs and reveals the classificatory criteria to assist in clinical glaucoma management. In this study, 163 glaucoma eyes were labelled with fou...
Humans Glaucoma Machine Learning Optic Disk Nerve Net Eye Algorithms Decision Trees Tomography, Optical Coherence Bayes Theorem Regional Blood Flow
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Flexible robotics in pelvic disease: does the catheter increase applicability of embolic therapy?

The Journal of cardiovascular surgery Feb 8, 2018
Interventional radiology procedures, equipment, and techniques as well as image guidance have developed dramatically over the last few decades. The evidence for minimally invasive interventions in vascular and oncology fields is rapidly growing and s...
Humans Female Regional Blood Flow Embolization, Therapeutic Radiography, Interventional Robotics Male Leiomyoma Vascular Access Devices Equipment Design Treatment Outcome Pliability Uterine Artery Embolization Pelvis Catheterization, Peripheral Prostatic Hyperplasia Vascular Diseases Uterine Neoplasms
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Association Between Optic Nerve Head Blood Flow Measured Using Laser Speckle Flowgraphy and Radial Arterial Pressure During Aortic Arch Surgery.

Journal of cardiothoracic and vascular anesthesia Aug 2, 2017
OBJECTIVE: This study was designed to investigate the association between ocular blood flow measured using laser speckle flowgraphy (LSFG) and radial arterial pressure during aortic arch surgery.
Optic Disk Arterial Pressure Aorta, Thoracic Blood Flow Velocity Male Laser-Doppler Flowmetry Humans Middle Aged Prospective Studies Intraoperative Neurophysiological Monitoring Female Cardiopulmonary Bypass Aged Regional Blood Flow
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Moderate, Short-Term, Local Hyperglycemia Attenuates Forearm Endothelium-Dependent Vasodilation After Transient Ischemia-Reperfusion in Human Volunteers.

Journal of cardiothoracic and vascular anesthesia Dec 2, 2016
OBJECTIVE: Acute hyperglycemia causes endothelial dysfunction in diabetic patients, abolishes ischemic pre- and postconditioning, and is an independent predictor of adverse outcome after myocardial infarction in nondiabetic patients. Its effects on e...
Forearm Infusions, Intra-Arterial Regional Blood Flow Vasodilation Cross-Over Studies Healthy Volunteers Endothelium, Vascular Acute Disease Adult Double-Blind Method Male Single-Blind Method Pilot Projects Glucose Hyperglycemia Reperfusion Injury Humans Female Young Adult
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Robot-assisted mechanical therapy attenuates stroke-induced limb skeletal muscle injury.

FASEB journal : official publication of the Federation of American Societies for Experimental Biology Nov 28, 2016
The efficacy and optimization of poststroke physical therapy paradigms is challenged in part by a lack of objective tools available to researchers for systematic preclinical testing. This work represents a maiden effort to develop a robot-assisted me...
Physical Therapy Modalities Stroke Rehabilitation Robotics Myostatin Regional Blood Flow Hindlimb Cytokines Animals Male Rats, Wistar Rats Brain-Derived Neurotrophic Factor Muscle, Skeletal
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Regional muscle tissue saturation is an indicator of global inadequate circulation during cardiopulmonary bypass: a randomized porcine study using muscle, intestinal and brain tissue metabolomics.

Perfusion Oct 17, 2016
BACKGROUND: Muscle tissue saturation (StO) measured with near-infrared spectroscopy has generally been considered a measurement of the tissue microcirculatory condition. However, we hypothesized that StO could be more regarded as a fast and reliable ...
Oxygen Oxygen Consumption Cardiopulmonary Bypass Regional Blood Flow Random Allocation Hemodynamics Brain Metabolomics Female Muscle, Skeletal Microcirculation Animals Intestinal Mucosa Swine Cerebrovascular Circulation Spectroscopy, Near-Infrared
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Learning of speckle statistics for in vivo and noninvasive characterization of cutaneous wound regions using laser speckle contrast imaging.

Microvascular research Apr 27, 2016
Laser speckle contrast imaging (LSCI) provides a noninvasive and cost effective solution for in vivo monitoring of blood flow. So far, most of the researches consider changes in speckle pattern (i.e. correlation time of speckle intensity fluctuation)...
Microcirculation Perfusion Imaging Sarcoma 180 Regional Blood Flow Image Interpretation, Computer-Assisted Immunohistochemistry Blood Flow Velocity Laser-Doppler Flowmetry Area Under Curve Data Interpretation, Statistical Skin Supervised Machine Learning Reproducibility of Results Animals Male Time Factors ROC Curve Mice Wound Healing Disease Models, Animal Predictive Value of Tests
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Capnodynamic assessment of effective lung volume during cardiac output manipulations in a porcine model.

Journal of clinical monitoring and computing Sep 16, 2015
A capnodynamic calculation of effective pulmonary blood flow includes a lung volume factor (ELV) that has to be estimated to solve the mathematical equation. In previous studies ELV correlated to reference methods for functional residual capacity (FR...
Animals Lung Swine Hemodynamics Time Factors Models, Theoretical Positive-Pressure Respiration Tidal Volume Sulfur Hexafluoride Cardiac Output Surface-Active Agents Respiratory Function Tests Regional Blood Flow Lung Injury Reference Values Lung Volume Measurements Anesthesia Functional Residual Capacity
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Artificial intelligence velocimetry and microaneurysm-on-a-chip for three-dimensional analysis of blood flow in physiology and disease.

Proceedings of the National Academy of Sciences of the United States of America Mar 30, 2021
Understanding the mechanics of blood flow is necessary for developing insights into mechanisms of physiology and vascular diseases in microcirculation. Given the limitations of technologies available for assessing in vivo flow fields, in vitro method...
Humans Diabetic Retinopathy Artificial Intelligence Blood Flow Velocity Lab-On-A-Chip Devices Computer Simulation Microfluidic Analytical Techniques Hemodynamics Retinal Vessels Imaging, Three-Dimensional Microaneurysm Regional Blood Flow Rheology
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