Koninklijke Philips Corporation N.v.

Claire Levrier

Raoul Florent

Jens Von Berg

Robert Randall Entrekin

Claude Cohen-Bacrie

Jean-Michel LaGrange

Bart Pierre Antoine Jozef Hoornaert

Nicolas Francois Villain

Nicholas Villain

Liesbet Hilde Hadewijch Roose

Gereon Vogtmeier

Hanns-Ingo Maack

Stewart Young

Larry James Eshelman

Christian Haase

Walid Ali

Andre Goossen

James David Schaffer

Dirk Manke

Christoph Kurze

André Goossen

Haithem Boussaid

Marc Hensel

André Gooβen

Bernardus Marius Hubertus Gevers

Jean-Michel Lagrange

The present invention relates to subtraction imaging. In order provide further improved accuracy of masking images, a device () for digital subtraction imaging is provided comprising an image data input (), a data processor () and an output interface (). 3D image data () of a region of interest of an object is received that comprises a 3D representation of the object based on a reconstruction from a plurality of 2D projection images. Further, a 2D live X-ray image () of the region of interest is received. The 3D image data and the 2D live X-ray image are registered, wherein a matching pose of the 3D image data corresponding to the 2D live X-ray image is determined. A digitally reconstructed radiography is computed from the 3D image data based on the determined matching pose to generate a 2D mask image. For the 2D mask image, current data related to the 2D live X-ray image is used to achieve an adapted 2D mask image, wherein the data related tothe 2D live X-ray image comprises 2D live acquisition parameters and/or data of the 2D live X-ray image. The generated adapted 2D mask is subtracted image from the 2D live X-ray image a digital image highlighting changes in the region of interest is provided.

Subtraction imaging

The invention is directed to a system () for image processing, which is capable of improving an usability of an imaging device during an intervention.

System for image processing

The present invention relates to image contrast enhancement. In order to provide improved and stable contrast enhancement for each acquired image, a device () for image contrast enhancement of an X-ray image of a vascular structure is provided. The device () comprises an input unit () and a processing unit (). The input unit is configured to provide an acquired X-ray image of a vascular structure with a contrast injection. The contrast injection is performed with a current contrast injection setting having at least one contrast injection parameter. The input unit is further configured to provide a generic vascular structure. The input unit is also configured to provide the current contrast injection setting. The processing unit is configured to determine an assessed contrast parameter for the generic vascular structure based on the current contrast injection setting. The processing unit is further configured to determine an adapted image contrast enhancement for the generic vascular structure based on the assessed contrast parameter. The processing unit is also configured to apply the adapted image contrast enhancement to the acquired X-ray image in order to generate a contrast-enhanced X-ray image.

Image contrast enhancement of an x-ray image

Apparatuses (IP) and related methods to visualize previously suppressed image structures in a radiograph (RD). A graphical indicator () is superimposed on the radiograph (RD) to indicate the suppressed image structure (). The apparatuses allow toggling in our out the graphical indicator () or to toggle between different graphical renderings thereof.

Silhouette display for visual assessment of calcified rib-cartilage joints

An X-ray apparatus for image acquisition and a related method. The apparatus comprises a field-of-view corrector (CS) configured to receive a scout image (SI) acquired by the imager with a tentative collimator setting in a pre-shot imaging phase where said imager operates with a low dosage radiation cone causing the detector to register the scout image. The low dosage cone has, in the detector's image plane, a first cross section smaller than the total area of the detector surface. The field-of-view corrector (CS) uses said scout image to establish field-of-view correction information for a subsequent imaging phase where the imager is to operate with a high dosage radiation cone, the high dosage higher than the low dosage.

X-ray collimator size and position adjustment based on pre-shot

An X-ray imaging guiding system for positioning a region of interest of a patient for X-ray image acquisition includes an X-ray detector arrangement, and graphical positioning information. The graphical positioning information includes a graphical target anatomy representation. The graphical target positioning information is provided in spatial relation with the X-ray detector arrangement. The graphical target anatomy representation indicates a target position of a respective anatomy of the patient for a determined X-ray image acquisition. Further, the graphical positioning information is adaptable in accordance with the determined X-ray image acquisition.

X-ray imaging guiding system for positioning a patient

The present invention relates to medical image viewing in relation with navigation in X-ray imaging. In order to provide improved X-ray images, for example for cardiac procedures, allowing a facilitated perception while ensuring that increased details are visible, a medical image viewing device () for navigation in X-ray imaging is provided that comprises an image data providing unit (), a processing unit (), and a display unit (). The image data providing unit is configured to provide an angiographic image of a region of interest of an object. The processing unit is configured to identify a suppression area for partial bone suppression within the angiographic image, and to identify and locally suppress predetermined bone structures in the angiographic image in the suppression area, and to generate a partly-bone-suppressed image. Further, the display unit is configured to display the partly-bone-suppressed image.

Bone suppression in X-ray imaging

The invention concerns a medical imaging system comprising means () of segmenting a region of interest around an object of interest within a volume of 3D data (DV). The system according to the invention comprises means () of calculating a sub-regions map (CSR) within the segmented region (RS) and correction means () intended to exclude sub-regions of the segmented region by means of said sub-regions map (CSR). The correction can be made automatically or manually by means of control means () enabling a user to select the sub-regions to be excluded. Display means () make it possible to display a 2D representation (DR) of the volume of 3D data (DV) and the segmented region (RS, RS') at various stages of the processing.

Medical imaging system and a method for segmenting an object of interest

An ultrasonic imaging apparatus using a method for combining CMB images of the same object including a step of seeking representative contours CNT of an interface on the images to be combined IM,[I], IM[J] is disclosed. The step is intended to define interest areas IA[I], IA[J] in the vicinity of the representative contours. The method also includes analyzing the interest areas IA[I], IA[J] being intended to allocate weights W[I], W[J] to the points on the interest areas IA[I], IA[J] and to the points corresponding to the interest areas IA[I], IA[J] on the various images. The method also includes constructing a combination image IM, a point on the combination image IMcorresponding to a point on at least one interest area IA being obtained from a weighting of the corresponding points on the images to be combined IM[I], IM[J] according to the weights W[I], W[J] allocated in the analysis step ANA.

Ultrasonic imaging apparatus with adaptable spatial image combination

A method for determining the presence or absence of malignant features in medical images, wherein a plurality of base comparison or training images of various types of lesions taken of actual patient is examined by one or more image reading experts to create a first database array. Low-level features of each of the lesions in the same plurality of base comparisons or training images are determined using one or more image processing algorithms to obtain a second database array set. The first and second database array set are combined to create a training database array set which is input to a learning system that discovers/learns a classifier that maps from a subset of the low-level features to the expert's evaluation in the first database array set. The classifier is used to determine the presence of a particular mid-level feature in an image of lesion in a patient based solely on the image.

Method and apparatus for automatically developing a high performance classifier for producing medically meaningful descriptors in medical diagnosis imaging

The invention relates to an ultrasound imaging system for forming an echographic image of a medium, which system includes a set [REC] of transducer elements [EL] which are operative in a transmission mode and in a reception mode for ultrasound waves, construction means [REB] for constructing echographic signals on the basis of signals [S[] . . . S[N]] received on the transducer elements [EL], display means [DIS] which are coupled to the construction means [REB] in order to display an image of the medium formed by means of the echographic signals. The construction means [REB] are such that in so-called exclusion zones, in which a coherent reflector is detected and which are determined by determination means [DET], the reception delays [D] are estimated in a manner [INT] other than that [CORR] used for the other zones. The calculation [CAL] of echographic signals is then carried out on the basis of the estimated delays [D[Z],Di[Z}}. The invention enables a correction of phase aberrations and nevertheless offers an excellent lateral resolution, notably in the case of point coherent reflectors.

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Rueil-Malmaison, France

Claire Levrier