Results 151 to 160 of about 252,409 (330)

Research progress on the use of the optical coherence tomography system for the diagnosis and treatment of central nervous system tumors

open access: yesIbrain, Volume 11, Issue 1, Page 3-18, Spring 2025.
With the advantages of high‐resolution imaging, efficient image acquisition, intraoperative real‐time detection, and radiation‐free and noninvasive characteristics, optical coherence tomography (OCT) provides accurate diagnosis and effective intraoperative guidance for the minimally invasive diagnosis and treatment of central nervous system (CNS ...
Jiuhong Li   +10 more
wiley   +1 more source

Is pathological fetal Doppler cerebroplacental ratio (CPR) associated with adverse delivery outcomes in pregnancies complicated by fetal growth restriction undergoing labor induction? A retrospective cohort study

open access: yesInternational Journal of Gynecology &Obstetrics, EarlyView.
Abstract Objective The optimal delivery approach for fetal growth restriction (FGR) with pathological cerebroplacental ratio (CPR) remains uncertain. This study evaluated the association between isolated pathological CPR (<5th percentile) and delivery outcomes, specifically the rate of cesarean delivery (CD) due to non‐reassuring fetal heart rate ...
Nofar Bar Noy‐Traub   +8 more
wiley   +1 more source

Factors affecting the umbilical artery Doppler reference values in the second and third trimesters

open access: yesInternational Journal of Gynecology &Obstetrics, EarlyView.
Abstract Objective To explore the contribution of selected methodological factors to the heterogeneity in published umbilical artery pulsatility index (UA‐PI) reference charts. Methods Cross‐sectional study of uncomplicated singleton pregnancies that underwent assessment of UA Doppler at a single center.
Sophia Rahimi   +4 more
wiley   +1 more source

Adipose‐derived small extracellular vesicles exacerbate microvascular dysfunction in heart failure with preserved ejection fraction via mmu‐miR‐582‐3p‐mediated Rap1b suppression

open access: yesInterdisciplinary Medicine, EarlyView.
This study reveals that small extracellular vesicles (sEVs) from visceral fat compromise coronary microcirculation in a mouse model of heart failure with preserved ejection fraction (HFpEF). The SGLT2 inhibitor canagliflozin emerges as a therapeutic strategy, improving cardiac function and endothelial health.
Lu Chen   +12 more
wiley   +1 more source

Capture of adeno‐associated viruses from clarified lysate by continuous flow ultracentrifugation: a comparative study of iodixanol and sucrose gradients

open access: yesJournal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND Adeno‐Associated Virus vectors are widely used in gene therapy due to their safety and efficacy. Despite the interest in their therapeutical application, AAV purification remains a significant challenge. Density gradient ultracentrifugation using cesium chloride, sucrose, or iodixanol gradients are common methods for AAV ...
Sabrina Leigheb   +6 more
wiley   +1 more source

Ultrasonic Image Characteristics of Palatine Tonsils in Healthy Children and Analysis of Factors Influencing Image Quality

open access: yesJournal of Clinical Ultrasound, Volume 53, Issue 3, Page 436-444, March/April 2025.
The ultrasound detection rate of the palatine tonsils in children was good. There are characteristic ultrasonic image manifestations. Tonsil ultrasound image quality is affected by individual and local factors. ABSTRACT Objective To explore the ultrasonic image characteristics of palatine tonsils in healthy children and the factors affecting image ...
Ying Cao   +5 more
wiley   +1 more source

Evaluation of the EarthCARE Cloud Profiling Radar (CPR) Doppler velocity measurements using surface-based observations

open access: yesAtmospheric Chemistry and Physics
Abstract. The Earth Cloud, Aerosol and Radiation Explorer (EarthCARE) mission was launched on 28 May 2024. One of the most exciting new measurement capabilities of the EarthCARE mission is the CPR Doppler velocity measurement. The availability of Doppler measurements from space will offer a unique opportunity for the collection of a global dataset of ...
Jiseob Kim   +4 more
openaire   +3 more sources

Comparison of the SMI Technique and CEUS for the Assessment of Microvasculature in Leiomyosarcoma and Its Clinical Value for Application

open access: yesJournal of Clinical Ultrasound, EarlyView.
SMI and CEUS can clearly reflect the microvascular situation in fibroids and effectively guide the clinical treatment of patients with uterine fibroids, but the effect of SMI is better than that of CEUS in guiding the treatment of patients, which can provide a reference for the selection of clinical treatment programs.
Qiufeng Li, Junbin Du
wiley   +1 more source

Application of Multimodal Ultrasound Combined With BI‐RADS in Classification and Diagnosis of Non‐Mass Breast Lesions

open access: yesJournal of Clinical Ultrasound, EarlyView.
This study demonstrates that integrating microvascular flow imaging, shear wave elastography, and contrast‐enhanced ultrasound with the BI‐RADS classification significantly improves the diagnostic accuracy for non‐mass breast lesions, offering a more reliable tool for differentiating benign from malignant findings.
Zengdi Yang   +8 more
wiley   +1 more source

A Comparative Study of Ultrasonography and CT Venography in the Diagnosis of Budd‐Chiari Syndrome

open access: yesJournal of Clinical Ultrasound, EarlyView.
Budd‐Chiari syndrome (BCS) is characterized by hepatic venous outflow obstruction from the hepatic veins to the junction of the inferior vena cava (IVC) and right atrium. Ultrasound (US) and CT venography (CTV) are used as imaging techniques for the diagnosis of BCS, and We compared the diagnostic efficacy of the two modalities. The results showed that
Tiling Jiang   +6 more
wiley   +1 more source

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