Abstract: Systems and method for determining zero subject flow rate for correcting leak estimation in respiratory devices. Estimating leak in respiratory devices is necessary for proper ventilation of the subject. Correctly estimating leak allows synchronous triggering and enables accurate measurements of respiratory parameters such as tidal volumes and peak flows to be performed. The systems (10) and the method (100) herein provide a solution to correct (116) for errors in leak estimation methods through analysis (108, 110, 112) of flow rate of the pressurized flow of breathable gas generated (104) by a pressure generator (12) of a respiratory device, and identification or estimation (114) of the flow rate of the pressurized flow at which zero subject flow rate occurs, wherein adjustments to the employed leak estimation method can be thereafter made.

Abstract: A patient interface device includes a sealing cushion, and a tubing assembly structured to receive a breathing gas from a pressure generating device. The tubing assembly has: (i) a first chamber fluidly coupled to the sealing cushion, the first chamber being structured to deliver a flow of the breathing gas to the sealing cushion, and (ii) a second chamber having a pressure sensing module disposed therein, the second chamber having a closed end and an open end, the open end being fluidly coupled to the sealing cushion such that the second chamber is structured to carry only a positive pressure and substantially zero gas flow.

Abstract: A system for grouping image annotations is disclosed. A display unit (1) is arranged for displaying a plurality of medical images relating to a subject (5) comprising a representation of an anatomical object. An annotation unit (2) is arranged for receiving information regarding input of a plurality of annotations (3) of the plurality of medical images via a user interface (4), wherein each annotation comprises geometric information relative to an image of the plurality of medical images. A grouping unit (4) is arranged for detecting a group of annotations among the plurality of annotations, based on the geometric information and a set of rules that define general properties of geometric relationships of annotations (3) that belong to the same object. The detecting of the group of annotations is further based on a geometric relationship between the plurality of medical images.

Abstract: An radio frequency (RF) transmit module for a magnetic resonance examination system includes a local field monitoring unit that measures a field emitted by an RF transmission element and generates a pick-up coil signal (puc-signal). The puc-signal is amplified and frequency-down-converted by mixing with an oscillator signal. The frequency-down-converted puc-signal and the RF drive signal for the RF transmission element are transferred over a common signal lead. The oscillator signal may also be transferred over the common signal lead.

Abstract: In a gaze-tracking system, localized error correction may be applied. The display area may be partitioned into error-correction zones, and each zone may have its own error correcting parameters or function. Calibration points may be defined for each of these zones, and the correction parameters or function within each zone may be dependent upon the observed errors as the user views each calibration point associated with the zone. In like manner, the function applied to smooth the determined gaze point to reduce noise may also be localized by basing its characteristics on the noise exhibited at each calibration point associated with defined noise-calibration zones. The error correcting function and/or the noise smoothing function may be selected based on the requirements of the particular application that receives the corrected and smoothed gaze location.

Abstract: A flexible conductive track arrangement has a pre-flexing condition in which the arrangement is generally planar. Conductive tracks are formed from a metal layer and they are covered above and below by insulator layers. The elongate conductive tracks are generally planar but locally corrugated perpendicularly to the general plane. This enables improved binding performance, for example to form tight windings using the conductive tracks.

Abstract: A system and method are provided for segmentation of an anatomical structure in which a user may interactively specify a limited set of boundary points of the anatomical structure in a view of a medical image. The set of boundary points may, on its own, be considered an insufficient segmentation of the anatomical structure in the medical image, but is rather used to select a segmentation model from a plurality of different segmentation models. The selection is based on a goodness-of-fit measure between the boundary points and each of the segmentation models. For example, a best-fitting model may be selected and used for segmentation of the anatomical structure. It is therefore not needed for the user to delineate the entire anatomical structure, which would be time consuming and ultimately error prone, nor is it needed for a segmentation algorithm to autonomously have to select a segmentation model, which may yield an erroneous selection.

Abstract: An electronic calculating device for performing arithmetic in a commutative ring includes a storage configured to store an increment table defined for an increment ring element, the increment table mapping an input ring element to an output integer-list encoding an output ring element, such that the output ring element equals the increment ring element ring-added to the input ring element. Using the increment table, a ring addition unit adds a first addition-input integer-list encoding a first addition-input ring element and a second addition-input integer list encoding a second addition-input ring element. The device may include a ring multiplication unit also using the increment table.

Abstract: A multi-level inverter provides multi-level output voltage. The multi-level inverter includes at least one cascaded H-bridge multi-level module. Each H-bridge multi-level module comprises a first H-bridge multi-level leg and a second H-bridge multi-level leg connected in parallel. Each of the first and second H-bridge multi-level legs includes a first inverter leg and a second inverter leg coupled in parallel through a coupled inductor. The first and second inverter legs are coupled respectively to a primary winding and a second winding of the coupled inductor for providing first and second input voltages with multiple voltage levels. The primary and secondary windings of the coupled inductor are coupled in series and a junction node of the primary and secondary windings forms an output terminal of the H-bridge multi-level leg. The first input voltage has a predetermined phase shift relative to the second input voltage.

Abstract: The invention relates to a method and an apparatus for cervical image analysis, wherein a transformation zone is identified in an acetic acid image by registering with its Lugol's iodine counterpart. Then, regions in the transformation zone which show significant changes in whiteness are identified as aceto-white regions and registered with the corresponding Lugol's iodine image, and it is determined if the identified regions in the Lugol's iodine image are iodine negative or positive. Based thereon, the aceto-white region can be categorized as one of metaplasia, inflammation or premalignant lesion region.

Abstract: The invention relates to a fluidic system comprising at least one bead chamber (311) containing a lyophilized reagent (LB) and a reaction chamber in a cartridge. In one embodiment, a series of bead chambers with different lyophilized reagents may be provided such that sample fluid can sequentially pass through them. In another embodiment, bead chambers may be located on a movable carrier, for example a rotating carousel, from which they may selectively be connected to a reaction chamber in a cartridge. In still another embodiment, the bead chamber (311) may comprise at least one flexible wall (FW) allowing for a minimization of dead volume associated with the extraction of lyophilized reagent (LB).

Abstract: An automated external defibrillator (AED) is described which spends an increased proportion of a rescue in a CPR mode. This is accomplished by use of a single shock protocol which causes the AED to spend less time in shock analysis and delivery activities as compared with the typical multiple shock protocol. An AED of the present invention preferably is configured such that the rescue protocol can be modified or changed easily without the need to remove the battery or use specialized hardware or software. Preferably the shock waveform of the single shock is a biphasic waveform delivering at least 150 Joules of energy and more preferably at least 200 Joules of energy.

Abstract: A thermal ablation includes a thermal ablation apparatus configured to perform thermal ablation on a targeted tissue according to plan data of a treatment during a therapy mode of the thermal ablation system. An MR apparatus is configured to perform T2* weighted MR imaging of the targeted tissue to assess a therapeutic response of the thermal ablation during an assessment mode of the thermal ablation system. A control apparatus is configured to switch the thermal ablation system between the therapy mode and the assessment mode. The thermal ablation apparatus is activated to perform the thermal ablation in the therapy mode. The thermal ablation apparatus is deactivated to terminate the thermal ablation and the MR apparatus is activated to perform the T2* weighted MR imaging in the assessment mode.

Abstract: A medical imaging system for providing X-ray image data of an object including at least one X-ray detector, an X-ray source arrangement, and a patient configured to receive an object for imaging a region of interest of the object. The at least one X-ray detector is movably mounted above the patient table; and the at least one X-ray detector and the X-ray source arrangement are movable independently. The X-ray source arrangement includes a physical trajectory support structure and is configured to provide X-ray radiation to the region of interest from a number of positions forming a concave open trajectory, wherein a portion of the trajectory and/or the physical trajectory support structure is located below the patient table; and wherein two end regions of the trajectory are extending on the two lateral sides of above the table.

Abstract: A machine learning guided image segmentation process is performed by an electronic processor (10). Image segmentation (22) is performed to generate an initial segmented representation (50) of an anatomical structure in the medical image. Parameters of a geometric shape are fitted (52) to the anatomical structure in the medical image to produce initial fitted shape parameters (54). A classification is assigned for the anatomical structure in the medical image using at least one classifier (60) operating on the initial fitted shape parameters and the initial segmented representation of the anatomical structure. A final segmented representation (72) of the anatomical structure in the medical image is generated by operations including repeating (70) the image segmentation using the classification as prior knowledge. In illustrative embodiments, the anatomical structure is a heart and the geometric shape is an ellipsoid.

Abstract: Disclosed techniques relate to identifying subjects in digital images. In some embodiments, intake digital images (404) are acquired (1002) that capture a first subject. A subset of the intake digital images is selected (1004) that depict multiple different views of the first subject's face. Based on the selected subset of intake digital images, first subject reference templates are generated and stored in a subject database (412). Later, a second subject is selected (1008) for identification within an area. Associated second subject reference templates are retrieved (1010) from the subject reference database. Digital image(s) (420) that depict the area are acquired (1012). Portion(s) of the digital image(s) that depict faces of subject(s) in the area are detected (1014) as detected face image(s). A given detected face image is compared (1016) to the second subject reference templates to identify the second subject (1018) in the digital image(s) that capture the area.

Abstract: In modern health systems, and particularly in those in developing countries, primary care-givers located remotely from diagnosticians are increasingly turning to the possibilities afforded by social media and improved communication techniques. In particular, medical information may be obtained from a patient of the primary care-giver, and transmitted (for example, by email) to a diagnostician. However, the primary care giver has no way to know that the diagnostician has diagnostic information display equipment which could enable a secure diagnosis, for example. The present application discusses diagnosis authentication techniques. The primary care-giver's operator terminal (20) may challenge the diagnostic terminal (10) to certify and transmit receive various attributes useful for assuring a reasonable diagnosis.

Abstract: The present invention provides apparatus and method for imaging a subject in clinical examination. An apparatus for imaging a subject, comprising: a plurality of light sources (20) for illuminating a region of interest within the subject, at least a portion of the light sources (20) being divided into groups and being actuated group by group, each actuated group of the light sources (20) providing an illumination flash with a predetermined duration, and different groups of the light sources (20) illuminating the region of interest at different angles; and a light detector (40) for receiving light reflected by the subject to form a frame of image for the region of interest per imaging period of the light detector (40), and the predetermined duration of the illumination flash being shorter than the imaging period, enough to enable different groups of the light sources to illuminate the region of interest per imaging period at different times within the imaging period.