摘要:
A method and device is proposed for automatic detection of an event in which a device is leaving a stable position relative to and within an anatomy. The method comprises the steps of receiving a sequence of fluoroscopic images, detecting a device in at least two of the fluoroscopic images, determining a motion field of the detected device in the sequence of fluoroscopic images, generating a sequence of integrated images by integrating the sequence of fluoroscopic images taking into consideration the motion field, determining a saliency metric based on the integrated images, identifying a landmark in the integrated images based on the saliency metric, and determining as to whether the landmark is moving relative to the device, based on a variation of the saliency metric.
摘要:
An apparatus for visualizing image material in a multimodal imaging environment. Images (XF, USV) from an X-ray imager (100) and an ultrasound probe (USP) are fused into an interactive graphics display (GUI) to form a 3D scene, where, alongside to a 3D rendering (USS) of an ultrasound volume (USV) an X-Ray projection plan (XF) is displayed in perspective within the same scene. The rendering is according to a user selected view (UV) which is changeable upon user interaction with the interactive graphics display (GUI).
摘要:
The present invention relates to image acquisition technology. In particular, the present invention relates to tracking of an object of interest in ultrasound image information. For interventional procedures, an object of interest, e.g. the tool by which a procedure is performed, is depicted in image information acquired by a certain imaging modality. However, e.g. during transcatheter intracardiac procedures, tools are employed, which are rather narrow objects that may experience substantive passive motion due to heartbeat and blood flow as well as active motion due to the interventionist steering the tool. The present invention to allows steering two-dimensional ultrasound image acquisition, in particular steering of an imaging plane of an ultrasound image acquisition device, so that an object of interest remains visible in the acquired images, in particular without continuous readjustment of imaging parameters. Accordingly, a method for ultrasound image acquisition, in particular for tracking an object of interest in ultrasound image information, is provided comprising receiving (12) X-ray image information (40) and ultrasound image information (42), detecting (14) an object of interest (36) in the X-ray image information (40) and steering (16) two-dimensional ultrasound image acquisition such that the object of interest (36) is within a first ultrasound image plane (42).
摘要:
The present invention relates to apparatus for automatic quantification of a part of vascular structure. It is described to provide (12) at least one first image comprising a spatial representation of a region of interest of a vascular structure, wherein the at least one first image comprises image data representative of a location of a part of a medical device. The medical device is configured to be used in a vascular treatment, and the part of the medical device is configured to be in a plurality of states associated with different phases of the vascular treatment. At least one second image comprising a spatial representation of the region of interest of the vascular structure is provided (14), wherein the at least one second image comprises image data representative of at least a part of the vascular structure in a visible and distinct manner. A location of a feature in the spatial representation of the region of interest of the vascular structure of the at least one first image is determined (18), wherein the feature is associated with the part of the medical device in one of the states associated with a phase of the vascular treatment. A transform relating at least one location in the at least one first image to a corresponding at least one location in the at least one second image is determined (20) and applied to the location of the feature in the spatial representation of the region of interest of the vascular structure of the at least one first image to provide a determined location in the spatial representation of the region of interest of the vascular structure of the at least one second image. Data is output (22) representative of the vascular structure at the determined location.
摘要:
The present invention relates to an medical interventional imaging device (1) for monitoring an interventional procedure, the medical interventional imaging device (1) comprising: a temporary data buffer (10) configured to temporarily store medical interventional fluoroscopic image data; a signal processor (20) configured to detect if an abnormal state occurs during an intervention and to record an instant at which the abnormal state has occurred; and a permanent data storage (30) configured to permanently store at least a part of the medical interventional fluoroscopic image data stored temporarily before and/or at the recorded instant if the abnormal state is detected.