摘要:
The invention relates to a method for generating images representative of the flow potential of a permeable body. The following steps are part of the disclosed method. First, providing a first sequence of digital images of the body perfused by a fluid at a rest condition. Then extracting a first quantification image of the spatial distribution of flow of the fluid in the body at the rest condition, the first quantification image being defined by pixel values. Next, providing a second sequence of digital images of the body perfused by the fluid at a stress condition. Then extracting a second quantification image of the spatial distribution of flow of the fluid in the body at the stress condition, the second quantification image being defined by pixel values. Then, combining the two quantification images to obtain an image defined by pixel values.
摘要:
A new method is introduced to evaluate the flow through a constriction based on Doppler data and the principle of mass conservation. This principle, properly inserted within a combination of data rearrangements allows the extraction of the complete velocity field and the optimal evaluation of the flow through the constriction. The digital implementation of the method into electronic equipments, like an echographic machine, gives an additional capability of quantifying specific valvular flows and improves diagnostic potential.
摘要:
A method and device for transforming a Doppler velocity dataset into a velocity vector field, the including: (a) providing a 2D or 3D Doppler velocity dataset, acquired by means of 2D or 3D ultrasonography from an object; b) calculating a velocity vector field by assuming the velocity at each point of the dataset to be the sum of the provided Doppler velocity and an additional vector field derived from an irrotational flow velocity, and by assuming the velocity vector field to be mathematically continuous, therefore solving an elliptical equation of the Poisson type.
摘要:
A method of tracking position and velocity of objects' borders in two or three dimensional digital images, particularly in echographic images. A sequence is acquired of at least two consecutive ultrasound image frames of a moving tissue or a moving object. The frames are separated by a certain time interval. Reference points define a border of the moving tissue or object and the border is automatically tracked by estimating the position of the reference points in following image frames on the basis of the ultrasound image data of the acquired sequence of image frames.
摘要:
A method of tracking position and velocity of objects' borders in two or three dimensional digital images, particularly in echographic images. A sequence is acquired of at least two consecutive ultrasound image frames of a moving tissue or a moving object. The frames are separated by a certain time interval. Reference points define a border of the moving tissue or object and the border is automatically tracked by estimating the position of the reference points in following image frames on the basis of the ultrasound image data of the acquired sequence of image frames.
摘要:
A method for registering images of a sequence of images, particularly ultrasound diagnostic images and especially ultrasound diagnostic images of the heart. The method comprises the steps of: providing at least a first and a second digital or digitalized image or set of cross-sectional images of the same object; defining within one image a certain number of landmarks by selecting a certain number of pixels or voxels to be tracked; tracking the position of each pixel or voxel selected from one to another image of said set of images by determining the relative displacements; and registering the set of images by applying the inverse displacement to the pixels or voxels between the images of said set of images.
摘要:
A new method is introduced able to track the motion of a thin object, e.g. a wall, from a series of digital field data (e.g. images) in order to analyze field information corresponding to the moving position of the object. The method is based on the extraction of M-mode images where the wall can be identified and the wall properties can be extracted and analyzed. The digital implementation of the method into electronic equipments improves the quality of the information that can be extracted from field data and the potential diagnostic capability when applied to echographic medical imaging.
摘要:
A method of tracking position and velocity of objects' borders in two or three dimensional digital images, particularly in echographic images. A sequence is acquired of at least two consecutive ultrasound image frames of a moving tissue or a moving object. The frames are separated by a certain time interval. Reference points define a border of the moving tissue or object and the border is automatically tracked by estimating the position of the reference points in following image frames on the basis of the ultrasound image data of the acquired sequence of image frames.
摘要:
The invention relates to a medical data management method and system wherein medical data (22c) and identification data (22b) associated with the medical data (22c) of said patient (6) is received, said medical data (22c) and said identification data (22b) is stored as a medical file (22) in a storage system (2), wherein at least parts of said medical files (22) are modified for generating at least one modified file (22′) in response to a retrieval request from an unauthorized recipient (Ni), wherein such modification depends on an authorization code (42) associated with said unauthorized recipient (Ni), and wherein said at least one modified file (22′) is supplied to said unauthorized recipient (Ni) or the unmodified medical file (22) is supplied to an authorized recipient (6, 7). The invention enables a worldwide medical database for research and global health interests, by at the same time safeguarding the legitimate interests of the patient.
摘要:
A new method is introduced able to track the motion of a thin object, e.g. a wall, from a series of digital field data (e.g. images) in order to analyze field information corresponding to the moving position of the object. The method is based on the extraction of M-mode images where the wall can be identified and the wall properties can be extracted and analyzed. The digital implementation of the method into electronic equipments improves the quality of the information that can be extracted from field data and the potential diagnostic capability when applied to echographic medical imaging.