Abstract:
The present invention provides a system and a method for imaging a volume of interest of a subject using ultrasound. The system comprises an ultrasound device adapted to acquire an image data set of the volume of interest of the subject and position information of a 3D ultrasound probe of the ultrasound device when the 3D ultrasound probe is placed at a position on the subject, the position information representing a position of the 3D ultrasound probe relative to at least three ultrasound sensors on an interventional device placed within the volume of interest, the at least three ultrasound sensors having predetermined relative positions at a distance from each other and not being aligned in a straight line; and an imaging device adapted to generate an image based on the image data set. According to the system, the position of the ultrasound probe may be derived in a convenient and low-cost manner.
Abstract:
The present invention provides an ultrasound imaging system and an ultrasound imaging method for improving the imaging quality of the desired imaging plane in the volume of interest of a subject. According to the present invention, it is possible to directly scan the desired imaging plane by exploiting the capability of a 2D matrix ultrasound transducer and/or the flexibility of the position/orientation of the ultrasound probe. In some cases, the setting parameters of the transducer elements can be adjusted so that the ultrasound signal transmitted from the transducer elements is able to derive ultrasound echo data of the desired imaging plane without moving the probe. In other cases where the desired imaging plane cannot be directly scanned without changing the position/orientation of the ultrasound probe, the position/orientation of the ultrasound probe can be adjusted by means of user interaction, namely by outputting the instruction for guiding the user to move the probe so as to enable direct scanning of the desired imaging plane. In this way, the image of the desired imaging plane is not reconstructed by interpolation of the ultrasound echo data of the plurality of scanning planes (which are determined by the setting parameters of the transducer elements), but instead it is reconstructed from the ultrasound echo data of the desired imaging plane itself. In other words, the desired imaging plane is directly scanned. Thus, the image quality of the desired imaging plane is improved and may help doctors conduct a more accurate diagnosis.
Abstract:
The present invention provides a method and a system for medical imaging and information display. According to an aspect of the present invention, there is proposed a method (10) of medical imaging and information display, comprising: acquiring (11) imaging data of each point of a plurality of points in an imaging plane or imaging volume of a subject in each mode of a plurality of different imaging modes of a medical imaging apparatus; deriving (12), for said each point, a value by applying the imaging data of the point in said each mode and the imaging data of at least one other point of said plurality of points adjacent to the point in said each mode to a predetermined model, wherein the predetermined model is selected in accordance with a clinical medical application related to the subject; constructing (13) an image based on all the derived values; and displaying (14) the constructed image to a user. Accordingly, the novel method of medical imaging and information display may reduce the burden of doctors, and provide them with an image with a higher definition compared to the conventional ROI method.
Abstract:
The present invention provides a method and a system for processing ultrasonic data. The method comprises: obtaining (210) a B-mode ultrasonic image; setting (220) a first ROI on the ultrasonic image according to a first input received from a user; measuring (230) elasticity-related data for the first ROI by using a shear wave ultrasonic imaging technique; generating (240) a second ROI on the ultrasonic image on the basis of the first ROI; and extracting image features for the second ROI from the ultrasonic image.
Abstract:
The present invention proposes an apparatus and method for characterizing a tissue in a first region of a subject. The apparatus comprises a receiving unit (210) for receiving ultrasound data of the tissue in the first region and ultrasound data of a predetermined target reference tissue of said subject; a deriving unit (220) for deriving a subject-specific model of the target reference tissue on the basis of the ultrasound data of the target reference tissue; and a characterizing unit (230) for determining a match between tissue in the first region and the target reference tissue on the basis of the subject-specific model and ultrasound data of the tissue in the first region. Unlike conventional tissue characterization based on a large cohort of patient data, the proposed subject-specific model is personalized for the specific subject without any generalization, resulting in higher sensitivity and/or accuracy. Preferably, the subject-specific model of the target reference tissue is derived on the basis of both the ultrasound data of the target reference tissue and the ultrasound data of a background reference tissue of a different type than the target reference tissue.
Abstract:
Individual computer diagnostic support (CDS) systems are coupled to a 'global' CDS system, each of the CDS systems using the same learning system or the same learning system technique. Training and testing cases from each of the individual CDS systems are provided to the global CDS system, and the global CDS system uses these training cases to produce learning system parameters based on the training cases. Having more training cases than any of the individual CDS systems, the parameters provided by the global CDS system offer a higher quality diagnostic output than any of the individual CDS systems. The learning system parameters at the global CDS system may be provided to each of the individual CDS systems, to update the parameters of the individual CDS systems' learning system. The global CDS may also refine and/or adjust the structure of the embodied learning systems.
Abstract:
An ultrasonic diagnostic imaging system produces contrast enhanced images which are processed differently during different stages of contrast agent wash-in. During an initial stage of contrast wash-in, imaging is done using pixels processed by maximum intensity detection, to better reflect the rapid change in contrast intensity. During a later stage of contrast wash-in, time averaged processing is used to diminish the effects of noise and motion on the pixel values. During an intermediate period of peak enhancement, a combination of both pixel values processed by both techniques is used. In another aspect, a wash-in period can be characterized by an appearance stage, a growth stage and a peak stage, in which contrast pixel data is adaptively processed in different ways during these periods.
Abstract:
An ultrasound system (10) has a probe (11) with a one dimensional array transducer (12) which is rocked or slid across the body in two orthogonal directions to acquire two sequences of elevationally offset planar images swept through the same region of interest. An image of one sequence is processed with one or more images of the other sequence to find a common line of intersection with one or more images of the other sequence. After all of the intersecting images have been processed to find their lines of intersection with other, substantially orthogonal images, and egg crate-like grid of images has been identified. The elevational spaces between the images can be filled in by scan conversion and the image data processed to form a three dimensional image of the region of interest.
Abstract:
A method includes obtaining, in electronic format, an image (102) including a medical image display region (104) and an information display region (106). The at least one of the medical image display region or the information display region includes graphical indicia representing at least one of an annotation (110, 112, 114, 116) or alphanumeric information (118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140). The method further includes evaluating pixels of the image to identify pixels including the graphical indicia representing an annotation or alphanumeric information of interest in the image. The method further includes extracting the annotation or alphanumeric information of interest from the identified graphical indicia from the image. The method further includes inserting the extracted annotation or alphanumeric information of interest in an electronically formatted clinical report for the image.
Abstract:
The present disclosure describes ultrasound imaging systems and methods for ultrasonically inspecting biological tissue, such as liver and for automatically identifying and acquiring a view suitable for hepatic-renal echo -intensity ratio quantification, using one or more neural networks, which may be trained to perform image classification, segmentation, or a combination thereof to compute a confidence metric and to provide a recommendation for measurement ROIs placement on the image.