Abstract: The invention concerns a method for processing images obtained by tomography or tomosynthesis, the method comprising: acquiring a plurality of 2D projection images of an object using an imaging system, the acquiring being defined by Rf=s, wherein s is a vector of the acquired projections, R is a projection operator which models the imaging system and f is the 3D image of the object to be reconstructed with knowledge of R and s; and processing the acquired 2D projection images, wherein the processing comprises applying an iterative algorithm defined by its iteration, wherein at least one set of processed projection images is generated at each iteration, the iteration being defined so that at each iteration the 3D image of the object is a linear function of the processed 2D projection images according to the property f(n)= Rp(n), wherein R is a matrix such that RRf is a 3D image.

Abstract: A method using an imaging device to define an acquisition geometry for 2D images of an observation region, a region for which there exists a 3D representation. 2D views of the 3D representation can be determined following the acquisition geometry of the imaging device for a plurality of viewing points, so that each acquired 2D image can be superimposed with any of this plurality of views. As a variant, in the 3D representation two views are determined corresponding to the viewing point at which the eye is positioned at the formation plane of the acquired image (front view and corresponds to the 2D image) and to the viewing point at which the eye is positioned at the focal point of the projective geometry (back view which is opposite to the viewing point of the 2D image).

Abstract: A method and apparatus for imaging including reconstruction of an image of an object from a set of projections acquired for different positions of an acquisition apparatus around the object to be imaged and in which a projection source is situated at a finite distance relative to the acquisition apparatus. The method includes undertaking a set of rectifications of projections acquired for different positions of the acquisition apparatus, rectifications comprising transforming the data of the projection acquired projection into projection data on a virtual rectification support placed in a preset orientation in concordance with a set of reconstruction calculation points distributed over the image to be reconstructed.

Abstract: A medical imaging device and method having a display screen, a processor for processing image data in order to display the data in the form of a 3D model, and a user interface. The processor acquires at least two points positioned in the 3D model via the user interface; deduces the positioning of an axis defined by the two points in the 3D model, and reorients the 3D model in such a manner that the axis as indicated in this way is to be found in a predefined orientation relative to the plane of the display screen.

Abstract: In the field of medical imaging minimizing the number of acquisitions required to calibrate a radiological device. Calibration of the radiological imaging device is provided by moving the device with respect to a calibration object and performing a series of acquisitions, each acquisition being associated to a calibration position of the device. Based on the acquisitions performed, determining the projection parameters associated to each calibration position of the device. For an additional position that has not been taken by the device during the acquisition, determining the projection parameter values associated to this additional position according to the parameters associated to the calibration positions.

Abstract: A method and apparatus for imaging including reconstruction of an image of an object from a set of projections acquired for different positions of an acquisition apparatus around the object to be imaged and in which a projection source is situated at a finite distance relative to the acquisition apparatus. The method includes undertaking a set of rectifications of projections acquired for different positions of the acquisition apparatus, rectifications comprising transforming the data of the projection acquired projection into projection data on a virtual rectification support placed in a preset orientation in concordance with a set of reconstruction calculation points distributed over the image to be reconstructed.

Abstract: A medical imaging device and method having a display screen, a processor for processing image data in order to display the data in the form of a 3D model, and a user interface. The processor acquires at least two points positioned in the 3D model via the user interface; deduces the positioning of an axis defined by the two points in the 3D model, and reorients the 3D model in such a manner that the axis as indicated in this way is to be found in a predefined orientation relative to the plane of the display screen.

Abstract: In the field of medical imaging minimizing the number of acquisitions required to calibrate a radiological device. Calibration of the radiological imaging device is provided by moving the device with respect to a calibration object and performing a series of acquisitions, each acquisition being associated to a calibration position of the device. Based on the acquisitions performed, determining the projection parameters associated to each calibration position of the device. For an additional position that has not been taken by the device during the acquisition, determining the projection parameter values associated to this additional position according to the parameters associated to the calibration positions.