2 research outputs found
An Integrated Visual Analytics System for Studying Clinical Carotid Artery Plaques
Carotid artery plaques can cause arterial vascular diseases such as stroke
and myocardial infarction, posing a severe threat to human life. However, the
current clinical examination mainly relies on a direct assessment by physicians
of patients' clinical indicators and medical images, lacking an integrated
visualization tool for analyzing the influencing factors and composition of
carotid artery plaques. We have designed an intelligent carotid artery plaque
visual analysis system for vascular surgery experts to comprehensively analyze
the clinical physiological and imaging indicators of carotid artery diseases.
The system mainly includes two functions: First, it displays the correlation
between carotid artery plaque and various factors through a series of
information visualization methods and integrates the analysis of patient
physiological indicator data. Second, it enhances the interface guidance
analysis of the inherent correlation between the components of carotid artery
plaque through machine learning and displays the spatial distribution of the
plaque on medical images. Additionally, we conducted two case studies on
carotid artery plaques using real data obtained from a hospital, and the
results indicate that our designed carotid analysis system can effectively
provide clinical diagnosis and treatment guidance for vascular surgeons
Preparation and Properties of Organically Modified Na-Montmorillonite
This study investigates the montmorillonite (MMT) content, rotational viscosity, and colloidal index of sodium montmorillonite (Na-MMT) as a function of the sodium agent dosage, reaction time, reaction temperature, and stirring time. Na-MMT was modified using different octadecyl trimethyl ammonium chloride (OTAC) dosages under optimal sodification conditions. The organically modified MMT products were characterized via infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy. The results show that the Na-MMT with good properties (i.e., the maximum rotational viscosity and highest Na-MMT content with no decrease in the colloid index) was obtained at a 2.8% sodium carbonate dosage (measured based on the MMT mass), a temperature of 25 °C, and a reaction time of two hours. Upon organic modification of the optimized Na-MMT, OTAC entered the NA-MMT interlayer, and the contact angle was increased from 20.0° to 61.4°, the layer spacing was increased from 1.58 to 2.47 nm, and the thermal stability was conspicuously increased. Thus, MMT and Na-MMT were modified by the OTAC modifier