摘要:
Methods for computed tomography data-based cycle estimation and four-dimensional reconstruction are provided. A gated reconstruction is derived from CT data acquired without gating using an added artificial trigger. The resulting images for different slices are used to determine local or slice variations over time. The local variations over time for the various slices are combined to create a respiratory cycle signal. This respiratory cycle signal is used to bin the images for different phases, allowing four-dimensional CT reconstruction.
摘要:
A method and system for acquiring, processing, storing, and displaying x-ray mammograms Mp tomosynthesis images Tr representative of breast slices, and x-ray tomosynthesis projection images Tp taken at different angles to a breast, where the Tr images are reconstructed from Tp images
摘要:
A system for mounting a needle shield to a syringe. The system includes a syringe nest and a gripper having a gripping position and a release position. The gripper is movable between an aligned position and a spaced position. A shaker has a shaker axis that is generally coaxial with the syringe axis. The shaker is movable along the shaker axis. An inspection camera is positioned proximate the syringe axis and defines a line of sight. The syringe nest, gripper, shaker and cap plunger are generally aligned along the syringe axis in a placing configuration wherein the gripper is in the gripping position holding the needle shield. The gripper is in the spaced position and the distal end of the cap plunger is in engagement with the needle shield in a final cap mounting configuration.
摘要:
The present invention relates to a segmentation method and apparatus of a medical image. The segmentation method of a medical image according to an example of the present invention includes the steps of: extracting information about a position of a pointer according to a user input from a slice medical image displayed on a screen; determining a segmentation region including the position of the pointer, based on information about the slice medical image related to the extracted information about the position of the pointer; preliminarily displaying the determined segmentation region in the slice medical image; and when the preliminarily displayed segmentation region is affirmed by a user, determining the affirmed segmentation region as a lesion diagnosis region for the slice medical image.
摘要:
Disclosed herein is a system and method for providing remotely accessible medical image data. The system and method allows for increased accuracy and semi-quantitative or fully quantitative data from images by enabling the remote user to select regions of interest on a compressed image, and then conducting quantitative analysis on original images at a central location.
摘要:
A technique is disclosed for generating a new contour and/or a 3D surface such as a variational implicit surface from contour data. In one embodiment, B-spline interpolation is used to efficiently generate a new contour (preferably a transverse contour), from a plurality of input contours (preferably, sagittal and/or coronal contours). In another embodiment, a point reduction operation is performed on data sets corresponding to any combination of transverse, sagittal, or coronal contour data prior to processing those data sets to generate a 3D surface such as a variational implicit surface. A new contour can also be generated by the intersection of this surface with an appropriately placed and oriented plane. In this manner, the computation of the variational implicit surface becomes sufficiently efficient to make its use for new contour generation practical.
摘要:
Disclosed are methods, and associated systems comprising processors, input devices and output devices, of detecting regions of interest in a tomographic breast image. The methods may comprise: acquiring tomographic breast image data; deriving a plurality of synthetic sub-volumes from the tomographic breast image data; wherein each subvolume is defined by parallel planar top and bottom surfaces; wherein planar top and bottom surfaces of successive subvolumes are parallel to each other; and wherein a top planar surface of a sub-volume is offset from a top planar surface of a prior sub-volume, such that successive sub-volumes overlap; for each sub-volume, deriving a two-dimensional image; for each two-dimensional image, identifying regions of interest therein; deriving at least one region of interest of potential clinical interest from a plurality of identified regions of interest; and outputting information associated with at least one derived region of interest of potential clinical interest.
摘要:
A system for mounting a needle shield to a syringe. The system includes a syringe nest and a gripper having a gripping position and a release position. The gripper is movable between an aligned position and a spaced position. A shaker has a shaker axis that is generally coaxial with the syringe axis. The shaker is movable along the shaker axis. An inspection camera is positioned proximate the syringe axis and defines a line of sight. The syringe nest, gripper, shaker and cap plunger are generally aligned along the syringe axis in a placing configuration wherein the gripper is in the gripping position holding the needle shield. The gripper is in the spaced position and the distal end of the cap plunger is in engagement with the needle shield in a final cap mounting configuration.
摘要:
A system and method to conduct image segmentation by imaging target morphological shapes evolving from one 2-dimension (2-D) image slice to one or more nearby neighboring 2-D images taken from a 3-dimension (3-D) image. One area defined by a user as a target on an image slice can be found in a corresponding area on a nearby neighboring image slice by using a deformation field generated with deformable image registration procedure between these two image slices. It allows the user to distinguish target and background areas with the same or similar image intensities.
摘要:
We describe a method of estimating the thickness of a tissue structure, in particular cortical bone thickness from tomographic imaging data such as CT data. The method models the tissue structure as a variation of an imaging parameter along a line; models a variation of the tomographic imaging data along the line as a blurred version of the variation of the imaging parameter modelling the; and fits the blurred tomographic imaging model to data from the tomographic imaging by holding a tissue modelling parameter at a constraining value and allowing variation of a blurring parameter and at least one parameter defining the thickness of the tissue structure to determine an estimate of the thickness of the structure.