Results 131 to 140 of about 64,303 (305)

Activatable smart contrast agents for photoacoustic imaging

open access: yesSmart Molecules, EarlyView.
This review highlights recent advances in smart activatable photoacoustic imaging (PAI) contrast agents, which dynamically modulate their optical properties in response to external stimuli or microenvironmental cues. It discusses their molecular design, activation mechanisms, biomedical applications, and future prospects for clinically tailored use ...
Donghyeon Oh   +5 more
wiley   +1 more source

In Vitro Flow Modelling for Mitral Valve Leakage Quantification [PDF]

open access: yes, 2009
In this study particle image velocimetry (PIV) is used to measure and visualise the blood flow through a leaking mitral heart valve. The results are compared with the results from Doppler echocardiography and computational fluid dynamics (CFD). Using CAD,
Claessens, Tom   +6 more
core   +1 more source

Optimal umbilical artery Doppler chart for predicting placenta‐mediated fetal growth restriction

open access: yesUltrasound in Obstetrics &Gynecology, EarlyView.
ABSTRACT Objective To compare the predictive accuracy of selected umbilical artery (UA) pulsatility index (PI) reference charts for outcomes associated with placenta‐mediated fetal growth restriction (FGR). Methods This was a retrospective cohort study of individuals with a singleton pregnancy who underwent UA Doppler assessment ≥ 20 weeks' gestation ...
A. Vayenas   +6 more
wiley   +1 more source

Development of carbon dioxide laser doppler instrumentation detection of clear air turbulence [PDF]

open access: yes
The analytical, experimental, and developmental aspects of an airborne, pulsed, carbon dioxide laser-optical radar system are described. The laser detects clear air turbulence and performs Doppler measurements of this air-motion phenomenon.
Jelalian, A.   +2 more
core   +2 more sources

Guidelines for Essential Trauma Care: Second Edition (2026)

open access: yesWorld Journal of Surgery, EarlyView.
Injury is a major cause of death and disability globally, with the highest burden in low‐ and middle‐income countries (LMICs). Strengthening the organization and planning for trauma care (care of the injured) can improve care and lower mortality. In 2004, the International Association for Trauma Surgery and Intensive Care (IATSIC) and the World Health ...
Charles Mock   +41 more
wiley   +1 more source

Validation of Aortic Blood Flow Simulations During Extracorporeal Circulation Using Phase Contrast Magnetic Resonance Imaging

open access: yesArtificial Organs, EarlyView.
This is the first study assessing in vivo blood flow profiles during extracorporeal circulation (ECC) scenarios. Magnetic resonance imaging data served for the calibration of computational fluid dynamics algorithms, enabling accurate replication of the hemodynamic conditions.
Anna Kathrin Assmann   +9 more
wiley   +1 more source

Primary cardiac T‐cell rich large B‐cell lymphoma causing aortic stenosis with metastasis in a Warmblood

open access: yesEquine Veterinary Education, EarlyView.
Summary An 18‐year‐old Warmblood mare was presented to the Royal Veterinary College Equine Referral Hospital for investigation of progressive periocular and facial swelling, weight loss and tachycardia. Physical examination additionally identified bilateral pansystolic (grade 5/6 basilar left‐sided, 2/6 right‐sided), cardiac murmurs, submandibular ...
S. E. Talbot   +4 more
wiley   +1 more source

Establishment of an MRI‐Based Diagnostic Approach to Identify Critical Pulpal Inflammation Zones in a Rat Caries‐Derived Pulpitis Model

open access: yesInternational Endodontic Journal, EarlyView.
ABSTRACT Aim To establish a magnetic resonance imaging (MRI)‐based diagnostic approach for identifying ‘critical pulpal inflammation’ zones in a rat model of caries‐derived pulpitis. Methodology Caries‐derived pulpitis was induced in the molars of Sprague–Dawley rats using the caries‐derived pulpitis model.
Kiichi Moriyama   +7 more
wiley   +1 more source

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