Abstract: Systems and methods for estimating cardiac strain and displacement using ultrasound are disclosed. According to an aspect, a method includes receiving frames of images acquired from a subject over a period of time. The method also includes determining, in the frames of images, speckles of features of the subject. Further, the method includes tracking bulk movement of the speckles in the frame of images. The method also includes determining displacement of at least a portion of the subject based on the tracked bulk movement.

Abstract: The invention relates to a method for providing quantitative measures of the flow property of a blood vessel. The method is based on analyzing cross-sectional images of a vessel by estimating the area of the lumen of the vessel. The method comprises steps of determining a point contained within the walls of the vessel, determining a closed path which approximates the inner circumference of the wall of the vessel, and determining the area of the closed path when the vessel is most expanding in order to get a measurement of the maximum lumen. This method may enable the clinical personnel to quickly evaluate the flow property e.g. of an inserted bypass vessel and, thereby, conclude if the surgical intervention is successful or if adjustments are required.

Abstract: The invention relates to method for detecting blood vessel structures in medical images obtained from a medical imaging device, wherein the method comprises determining image parts in a selected medical image, where the image parts are determined by processing intensity values of the image, determining first and second feature values of each of one or more of the image parts, determining one or more feature values of each of one or more of the image parts, where the features values indicate if the image part from which the feature values are determined pictures a desired blood vessel structure, based on the feature values, determine if the selected medical image shows the desired blood vessel structure.

Abstract: The invention relates to a method for providing quantitative measures of the flow property of a blood vessel. The method is based on analyzing cross-sectional images of a vessel by estimating the area of the lumen of the vessel. The method comprises steps of determining a point contained within the walls of the vessel, determining a closed path which approximates the inner circumference of the wall of the vessel, and determining the area of the closed path when the vessel is most expanding in order to get a measurement of the maximum lumen. This method may enable the clinical personnel to quickly evaluate the flow property e.g. of an inserted bypass vessel and, thereby, conclude if the surgical intervention is successful or if adjustments are required.

Abstract: Method for processing digital images, such as magnetic resonance images of a brain. The images contain a first object, for example the cerebrum white matter, a second object, for example the cerebral cortex, and a third object, for example the cerebrospinal fluid. The method involves providing a digital dataset representing a deformable curve or surface that in an initial state approximates the boundary between the first object and the second object. Further, a vector force field is provided that for each point on the deformable curve or surface defines a direction from the point approximately towards the second boundary between the second and the third object, and this vector force field is applied for iteratively deforming the deformable curve or surface convergently towards the second boundary.