58 results about "Carotid artery plaque" patented technology

A system and method of obtaining and analyzing ultrasound images of a patient provides for the identification of specific tissue types in using the image data. A feature vector set of sub-regions of the region of interest is obtained, dimensionally reduced and evaluated using a heuristic to identify the tissue type. Where the tissue type is suitable for image standardization, the overall gray scale of the image is adjusted with respect to a predetermined gray scale for the identified tissue type. The image may be segmented and plaque regions identified and characterized. The characterized plaque and other parameters such as percent stenosis may be used to determine a risk score for the patient.

Systems, methods and apparatus are provided through which carotid plaque is classified in an image and visually displayed using an iterative adaptive process, such as an expectation maximization process.

Systems, methods and apparatus are provided through which carotid plaque is classified in an image and visually displayed using an iterative adaptive process, such as an expectation maximization process.

The present disclosure is directed to compounds, diagnostic agents, and related methods. In some cases, methods for treating patients are provided. More specifically, the disclosure provides compounds, diagnostic agents, and kits for detecting and / or imaging and / or monitoring elastin rich tissues. In addition, the disclosure provides methods of detecting and / or imaging and / or monitoring the presence of coronary plaque, carotid plaque, iliac / femoral plaque, aortic plaque, renal artery plaque, plaque of any arterial vessel, aneurism, vasculitis, other diseases of the arterial wall, and / or damage or structural changes in ligaments, uterus, lungs or skin, as indicated by changes in total vessel wall area, internal lumen size, and exterior arterial perimeter.

The carotid artery plaque properties are quantitatively determined by a carotid artery echo whereby predicting incidence of cerebral infarction or myocardial infarct. A method includes obtaining, coloring, and displaying steps. In the obtaining step, the integrated amounts per unit time of echo signals corresponding to pixels of an echo image of carotid artery plaque are obtained. The signals are obtained when the image is obtained by an IBS method. In the coloring step, the relationship between ranges and colors is referenced. The available full range of the integrated amount is previously divided into the ranges. The colors are assigned to the ranges. The pixels are classified into the ranges in accordance with the integrated amounts corresponding to the pixels. The pixels of the image are colored in colors corresponding to the ranges of the pixels. In the displaying step, the colored echo image is displayed on a display portion 30.

The invention belongs to the field of intersection of a computer technology and medical images, and in particular relates to a dividing method of plaque in the cross section direction of carotid artery blood vessel in an ultrasound image. The method specifically comprises the following steps of: selecting the current frame image; dividing to obtain profiles of internal and external membranes of the blood vessel; extracting the plaque and dividing the interested area; detecting an initial plaque external boundary: carrying out curve fitting on each column of pixel point gray value between the internal and external membrane profiles on a polar coordinate image obtained through conversion in the interested area, and detecting the pixel point with the minimum gray value and nearest to the external membrane profile as the initial plaque external boundary point; carrying out level set evolution to obtain the final plaque external boundary; and using the area between the final external boundary and the internal membrane profile as the plaque area. By adopting the dividing method of ultrasound carotid artery plaque, plaque can be accurately divided, the workload of doctors can be greatly reduced, and the plaque size and area calculated on the basis of the division result can help doctors analyze the lesion degree and treatment effect.