Philips Patente

An optical measurement device (100) for obtaining optical measurements from a subject sampling region (110), is provided. The optical measurement device includes: at least one optical source (120, 120') configured to generate optical radiation; an optical waveguide (130); an optical splitter (140) or circulator (150); and at least one optical detector (160). The at least one optical source (120, 120') is configured to couple the optical radiation into a proximal end of the optical waveguide (130). The optical splitter (140) or circulator (140) is arranged at a distal end of the optical waveguide (130) and is configured to output at least a portion of the optical radiation for irradiating the subject sampling region (110), and to receive at least a portion of the outputted optical radiation that has irradiated the subject sampling region, and to couple at least a portion of the received portion back into the distal end of the optical waveguide (130). The at least one optical detector (160) is arranged at a proximal end of the optical waveguide (130) and is configured to detect at least a portion of the optical radiation that has returned to the proximal end of the optical waveguide via the distal end of the optical waveguide.

Proposed concepts thus aim to provide schemes, solutions, concept, designs, methods and systems pertaining to identifying noisy electrodes of an ECG measurement system. In particular, embodiments aim to provide a method for identifying noisy electrodes of an ECG measurement system by analyzing multiple ECG lead signals, and then, using a known correspondence between each lead signal and the pair of electrodes which generated it, identifying a noisy electrode based on noise indicator values of the lead signals. By identifying a noisy electrode, rather than merely identifying a noisy lead signal, said electrode can be directly dealt with (e.g., repositioned, replaced, or discarded), facilitating a more effective use of the ECG monitoring system.

The present invention relates to a core body temperature estimation device, a core body temperature estimation system and a core body temperature estimation method for estimating a user's core body temperature and to a sensor device for measuring optical and thermal features of a user's skin- and/or subcutaneous tissue. The core body temperature estimation, CBT, device for estimating a user's CBT comprises an input unit configured to obtain first temperature data comprising information about a skin- and/or subcutaneous tissue temperature of the user, second temperature data comprising information about a second temperature, and optical data comprising information about an optical transmission and/or absorption of the user's skin- and/or subcutaneous tissue; a processing unit configured to estimate a thickness of the user's skin- and/or subcutaneous tissue based on the optical data and to estimate the user's CBT based on the first temperature data, the second temperature data and the estimated thickness, and an output unit configured to provide CBT information comprising information about the estimated CBT.

A method comprising accessing a clinical database recording historical ECG signal recordings and epidemiological data for a patient population, clustering waveform features extracted from the historical ECG signal recordings according to morphology characteristics to derive ECG waveform morphology clusters, correlating each morphology cluster with epidemiological information associated with corresponding patients, identifying epidemiological features correlated with each cluster, and creating a data structure associating ECG waveform feature morphology with correlated epidemiological features.

The invention relates to a method of magnetic resonance (MR) imaging, comprising: acquiring MR imaging data in two or more separate acquisition steps, each acquisition step covering a respective spatially distinct or partially overlapping sub-volume of a three dimensional volume of a subject; selecting or generating a reference image defining a target spatial coordinate system; and reconstructing at least one image representation of the sub-volumes using a motion- compensated reconstruction process comprising either one of: independently reconstructing respective image representations of the sub-volumes from the MR imaging data and transforming at least one of the reconstructed image representations based on the reference image such that all reconstructed image representations are geometrically consistent with the target spatial coordinate system; or jointly reconstructing a common image representation of the three-dimensional volume from the MR imaging data of all acquisition steps, wherein the reconstruction involves a geometric mapping to the reference image such that the common image representation is geometrically consistent with the target spatial coordinate system. Moreover, the invention relates to an MR imaging system configured to perform the method.

A method (100) for ECG calibration, comprising: obtaining (120), while a body of an individual is positioned in a first posture, both: (i) first posture data from a posture component (280); and (ii) first ECG data from an ECG monitor (290); obtaining (130), while the body of the individual is positioned in a second posture different from the first posture, both: (i) second posture data from the posture component; and (ii) second ECG data from the ECG monitor; extracting (140), from the first ECG data, a plurality of first ECG waveforms; extracting (150), from the second ECG data, a plurality of second ECG waveforms; generating (160), from the extracted plurality of first ECG waveforms, a first ECG waveform baseline; generating (170), from the extracted plurality of second ECG waveforms, a second ECG waveform baseline; and reporting (180) one or both of the first ECG waveform baseline and the second ECG waveform baseline.

A method of monitoring walking speed of a subject includes estimating a reference walking speed of the subject based on walking pattern variations in a test-specific pattern of a walking test over a known distance; predicting a calibration estimated walking speed of the subject using a predetermined walking speed algorithm based on data from at least one sensor worn by the subject during the walking test; determining at least one calibration coefficient based on the reference walking speed and the calibration estimated walking speed; predicting a subsequent estimated walking speed of the subject during a subsequent walking event after the walking test; and determining a corrected walking speed of the subject during the subsequent walking event by adjusting the subsequent estimated walking speed using the at least one calibration coefficient.

An apparatus (501) for gamut mapping saturated colors to a narrow gamut representation such as Rec. 709 comprising performing at least two iterations of the following calculations:- determine threshold values for the three color components based on two of the iterated color components which are not the color component that the threshold is for: Rthr=kRG*Gt+kRB*Bt;Gthr=kGR*Rt+kGB*Bt;Bthr=kBR*Rt+kBG*Gt; and- performing the following three mapping functions on the input color components: Rout=Rthr+R2lin_i−Rthr/diff_gainifR2lin_i<RthrRout=R2lin_iifR2lin_i>=Rthr;Gout=Gthr+G2lin_i−Gthr/diff_gainifG2lin_i<GthrGout=G2lin_iifG2lin_i>=Ghr;Bout=Bthr+B2lin_i−Bthr/diff_gainifB2lin_i<BthrBout=B2lin_iifB2lin_i>=Bthr; and- setting the three iterated color components for the next iteration equal to the output values of the three mapping functions:Rt = Rout;Gt = Gout;Bt = Bout; andwherein the k coefficients are fixed coefficients depending on the color bases.

Proposed concepts aim to provide schemes, solutions, concepts, designs, methods, and systems pertaining to a coil arrangement for use in an MRI system. In particular, embodiments provide a coil arrangement including two different coil arrays (110, 121, 122). An actuator (130) and controller (140) are used together to automatically move the second coil array (121, 122) relative to the first coil array (110) between an undeployed position (Figure 1A), which permits patient positioning, and a deployed position (Figure 1B), which is suitable for imaging using both coil arrays.

The subject-matter of the present disclosure relates to a computer implemented method for determining a quality of a medical image, comprising: applying a first image processing (101) to the medical image (100) to obtain a first output (103), comprising at least one of: inputting the medical image to a first machine learning model, and applying a first transformation to the medical image and inputting the first transformed image to the first machine learning model; applying a second image processing (102) to the medical image to obtain a second output (104), comprising at least one of: inputting the medical image or the first transformed image to a second machine learning model, and applying a second transformation to the medical image and inputting the second transformed image to the first machine learning model; and determining an image quality measure (105) based on a variability of the first output and the second output.

Personalized oral care guidance is provided by capturing a dental image of a subject at an end user device, identifying oral health issues using a machine-learning model, and generating a mouth map with the issues. The mouth map can indicate the location and severity of oral health problems, such as cavities, gum disease, or tooth misalignment. The device displays the mouth map on a screen, allowing users to visualize their oral health and receive tailored guidance on how to address these issues. An oral care device acts on the insights based on the image analysis and adjusts the settings for real-time brushing.

The described technology pertains to personal care devices equipped with gas measurement technologies for monitoring oral-systemic health. Technology addresses the challenge of accurately measuring gas compounds in exhaled breath, which can be confounded by ambient air gases. The solution involves a device (100) with a first sensor (101) for gas measurement, a proximity detection means (102), and a processor (103) that controls background and exhaled gas measurements. The processor processes these measurements to provide a gas output signal representing user-produced gases. This system enhances health assessments by distinguishing between ambient and user-produced gases, offering non-invasive, real-time monitoring. The device is particularly useful in personal care applications, such as toothbrushes, where consistent monitoring is beneficial.

There is provided a computer-implemented method of providing user guidance for a skin treatment device to perform skin treatment. The computer-implemented method comprises: establishing a connection between the skin treatment device and a processing device performing the computer-implemented method; determining a start of a treatment with the skin treatment device at a first point of time; determining the connection is interrupted after the first point of time; re-establishing the connection; determining whether a time period between the first point of time and a second point of time exceeds a threshold, wherein the second point of time is when the connection has been re-established; in case the time period does not exceed the threshold, receiving use data from the skin treatment device, and adapting the user guidance based on the use data; in case the time period exceeds the threshold, not adapting the user guidance based on the use data, wherein the use data is representative of one or more skin treatment sessions performed with the skin treatment device during the time period; generating a guidance signal representative of the user guidance.

The present invention provides a method for performing whole-body, WB, amide proton transfer weighted/chemical exchange saturation transfer, APTw/CEST, magnetic resonance imaging, MRI, the method comprising the following method steps: S1) B0 magnetic field shimming for B0 magnetic field homogenization and B1 radiofrequency field shimming for B1 radiofrequency field homogenization at multiple body positions and/or multiple imaging stations, S2) measuring data including coil sensitivity, resonance frequency, B0 magnetic field maps, and B1 radiofrequency field maps at multiple body positions and/or multiple imaging stations, S3) adapting a sequence operation protocol for the APTw/CEST locally at multiple body positions and/or multiple imaging stations, based at least in part on the measured data, S4) acquiring APTw/CEST MRI data at multiple body positions and/or multiple imaging stations on the basis of the adapted sequence operation protocol, S5) processing the acquired APTw/CEST MRI data for visualization, and S6) visualizing the processed APTw/CEST MRI data. In this way, a method is provided for performing whole-body APTw/CEST MRI that enables reliable, time-efficient, and spatially consistent imaging across multiple body regions.

A system for classifying and projecting neurological disease severity based on electrocardiograph (ECG) includes a controller comprising a memory that stores instructions and a processor that executes the instructions. When executed by the processor, the instructions cause the system to: obtain initial ECG data; detect characteristics indicative of a neurological disease from the initial ECG data; classify severity of the neurological disease based on the detected characteristics from the initial ECG data; and predict a future severity of the neurological disease based on the classified severity.

A medical device and its method of use are disclosed. The medical device includes a heating element adapted to be disposed in an elastic balloon. The heating element being adapted to be heated to a temperature to cause reversible denaturation of collagen in a vein.

An imaging system captures images of a patient during a medical scan using a scanner having a scanning system and a patient support that is configured to move relative to the scanning system. A set of one or more optical cameras is mounted in a fixed position relative to the scanning system and directed towards the patient support for capturing images. A position input identifying a patient position is received, and virtual views are created by image post-processing. The post-processing involves adapting an orientation and/or focal depth for the virtual view generation in dependence on the patient position. A virtual view image sequence is then generated for display.

Disclosed herein is a method for controlling an imaging data acquisition by a medical imaging system (110) from a region of interest (170) of a subject (118), which is at least partially moved due to respiratory movements of the subject (118). The method comprises receiving an imaging protocol (420) with a set of imaging parameters (422) for an executing of the imaging data acquisition. A respiratory signal of the subject (118) is received and a length (440) of a compliant respiratory phase (320) determined, during which the respiratory movements comply with a predefined movement tolerance (424). The length (440) is compared with an imaging time (426) required for acquiring the imaging data (470). The medical imaging system (110) is controlled to acquire the imaging data (470) based on a result of the comparing.

A system and method for monitoring a subject. A first set of physiological data is obtained and processed, using a trained machine-learning algorithm, to generate a second set of physiological data. The trained machine-learning algorithm is trained using subject-specific training data comprising physiological data corresponding to the first set of physiological data and physiological data corresponding to the second set of physiological data.

Disclosed herein is a medical system (100, 300, 500, 700, 900, 900') comprising a phantom positioning system. The phantom positioning system comprises: a phantom mount (102) configured for receiving a quantitative MRI phantom (108) and an automated actuator (104) configured to reposition the phantom mount in response receiving movement commands. The movement commands are preferably embedded in quantitative MRI calibration pulse sequence commands (948).

System and related methods for facilitating operation of a rotational tomographic X-ray imaging apparatus (IA), comprising a user input interface (USI) capable of allowing a user of the imaging apparatus to specify desired one or more imaging requirements as user input. An adjuster (AD) is configured to adjust, based on the user input, one or more imaging parameters in respect of the imaging apparatus so as to improve isotropy of spatial resolution in tomographic imagery obtainable by operation of the imaging apparatus (IA) at the adjusted parameters.

A decoder audio apparatus comprises a receiver (101) receiving an audio data signal comprising a downmix audio signal for a stereo signal as well as spatial parameter sets wherein a second set comprises parameters with a lower frequency resolution and a higher time resolution than parameters for a first set. A decorrelator (103) decorrelates the mono downmix to generate a decorrelated signal and a transformation circuit (105) generates a first stereo signal from the mono downmix signal and the decorrelated signal using the parameters of the first set of spatial parameters. A signal generator (107) generates an output audio stereo signal from the first stereo signal with the generation depending on parameters of the second set of spatial parameters. The signal generator (107) may perform a second transformation/upmixing using coefficients determined from parameters of the second set. The approach may provide improved temporal accuracy for fast signal components with little increase in the data rate.

An analysis system is provided for analyzing the breath of a subject. A gas sensor is used to detect a target gas in inhaled and exhaled air of a subject. The timing of breathing inhalation and exhalation phases is determined, and a target gas concentration is obtained which is indicative of a subject-induced generation of the target gas. It is or example derived from fluctuations in the gas sensor output signal between the (i) exhalation phase or a portion thereof, and (ii) the inhalation phase or a portion thereof. This analysis system enables the breathing inhalation and exhalation phases to be resolved so that a target gas measurement can be controlled accordingly. In this way, the analysis system can distinguish between compounds or compound concentrations already present in the ambient environment and compounds or compound concentrations produced by the user.

A system (100) and method (300) are disclosed for providing a style tailored response to a user. The system includes a processor (104), a memory (106), a style tailoring interceptor module (122) for analyzing (310), via the processor (104), an inquiry from a user to determine a style profile associated with the user and generating (330) an enhanced prompt by incorporating the style profile into a prompt, and an artificial intelligence (AI) model (128) for defining style-tailoring requirements for a response to the user based on the enhanced prompt, wherein the AI model (128) uses the processor (104) to determine and transmit (335) a style-tailored response to the user from the based on the enhanced prompt.

An X-ray tube (100) for X-ray imaging is described. The X-ray tube comprises an anode (10) configured to rotate around a rotational axis (12); a cathode (20) configured to generate an electron beam (14) impinging the anode; a rotational system (30) for rotating the anode around the rotational axis, wherein the rotational system comprises a bearing having a rotatable part and a stationary part. The rotatable part of the bearing is attached to the anode. The X-ray tube further includes a vacuum frame (40) enclosing the anode and the cathode, and a mechanical interface (50). The mechanical interface is positioned between the bearing and the vacuum frame, and is mechanically connecting the stationary part of the bearing and the vacuum frame. The mechanical interface comprises at least three elastic elements at different positions around the rotational axis, wherein each elastic element extends along the rotational axis to provide stiffness in an axial direction of the rotational axis, and wherein each elastic element is bendable in a radial direction of the anode.

The present disclosure relates to systems and methods for ontology-oriented graph dataset modeling, data retrieval, and hybrid structuring of generative machine learning outputs, which address the challenges of querying and extracting clinical insights from large, complex datasets. By combining knowledge graphs and large language models, embodiments of the present disclosure enable lay users to perform natural language queries on large, structured datasets and receive evidence-backed results with visual context. Embodiments include an orchestrator module powered by one or more LLMs and an instruction prompt, which selects an appropriate context retrieval tool based on a user's query. The context retrieval tool retrieves results from an ontologically-oriented graph, generates a knowledge graph, and provides a response to the query. This approach improves the efficiency and accuracy, allowing users to discover novel and unknown relationships within the dataset without needing comprehensive schema knowledge, thereby overcoming the high barrier of entry for extracting insights.

A method and system for calibration of a multi-camera system. Sets of 2D image frames of a scene are obtained, each set having been acquired by the multi-camera system at a different moment in time, and a feature detection and matching process is performed on each set of 2D image frames to identify a respective set of matched features. A pose is determined for each camera in the multi-camera system using the matched features in each set.

A power transmitter (101) for wirelessly providing power to a power receiver (105) comprises an output circuit (303, 103) comprising a transmitter coil (103) generating a power transfer signal when a drive signal is applied to the output circuit (303, 103). A power controller (305) adapts the power level by varying the drive frequency. A measurement circuit (307) controls the driver (301) to set the drive frequency to a first measurement frequency and to generate the drive signal to have a waveform comprising at least one higher harmonic at a harmonic frequency being a multiple of the first measurement frequency. It further determines a first measured transmitter coil current by performing a first measurement of a transmitter coil current for the transmitter coil at the first measurement frequency and determining a second measured transmitter coil current by performing a second measurement of the transmitter coil current at the harmonic frequency. A frequency controller (309) controls the power controller (305) to further adapt the drive frequency in dependence on the first measured transmitter coil current and the second measured transmitter coil current.

A system (100) for planning an intravascular procedure, comprises an X-ray imaging system (110), and one or more processors (120). The X-ray imaging system (110) is configured to: acquire (S110) volumetric X-ray data (130) representing a distribution of a contrast agent injection in a region of interest in the brain; and acquire (S120) projection X-ray data (140) representing a distribution of the same contrast agent injection in the aortic arch. The one or more processors (120) are configured to: generate (S130), from the volumetric X-ray data (130), a first image (150) for assessing the region of interest in the brain; and generate (S140), from the projection X-ray data (140), a second image (160) for planning an intravascular procedure via the aortic arch.

An apparatus generates a biomedical data signal representing a multichannel biomedical signal comprising biomedical channel signals for measured differential voltages between two measurement electrodes. A determination circuit (103) derives a reference signal from the biomedical channel signals, e.g. as an average signal of the channel signals. A compensation circuit (105) generates compensated biomedical channel signals by compensating the biomedical channels signals for the first reference signal, e.g. by subtracting the reference signal. A data encoder (107) generates encoded compressed data for the compensated biomedical channel signals and a data signal generator (109) generates the biomedical data signal to comprise the compressed encoded data. An apparatus may receive the biomedical data signal and perform the reverse operation of first determining compensated channel signals and then compensating these by the reference signal to generate the biomedical data signal.

The present disclosure provides concepts for determining cardiac and/or respiratory information of a subject. To this end, a cushion is provided that is configured for compression by movement of at least a part of a torso of a subject, the cushion containing a fluid, wherein a fluid pressure within the cushion changes responsive to compression of the cushion. Furthermore, an amplification arrangement is provided that has a visual characteristic dependent upon the fluid pressure within the cushion. The visual characteristic of the amplification arrangement over a time period is therefore recorded (e.g., by a camera), and the recorded visual characteristic is analyzed to generate cardiac information and/or respiratory information of the subject during the time period.

The invention relates to a system for identifying a patient in a patient database based on an ECG signal. The system comprising an input interface configured to receive an electrocardiogram ECG signal of the patient; encode the ECG signal using an encoder so as to obtain a current vector embedding; maintain a vector database comprising previous vector embeddings of ECG signals of multiple patients acquired over time; compare the current vector embedding with the previous vector embeddings; and identify the patient based on one or more previous vector embeddings that are the closest to the current vector embedding.

A system (100) for providing viewing angles for acquiring X-ray projection data representing a vascular region, is proposed. The system includes one or more processors (110) configured to: receive (S110) volumetric data (120) representing the vascular region (130). The processor(s) are also configured to determine (S120), based on the volumetric data (120), and for each of a plurality of portions (130_1..i) of the vascular region, a corresponding range of one or more viewing angles (Δα_1..i, Δβ_1..i) for acquiring X-ray projection data (150) representing the portion (130_1..i). The processor(s) are also configured to output (S130) the ranges for the portions (130_1..i) and/or an optimal range of one or more viewing angles (Δα_opt, Δβ_opt) for acquiring X-ray projection data (150) representing the plurality of portions (130_1..i), the optimal range being determined based on the ranges for the portions (130_1..i).

The subject-matter of the present disclosure relates to a computer implemented method for setting a radiographic imaging system, the method comprising: (i) arranging the radiographic imaging system in a first configuration; (ii) obtaining a reference area, based on a known geometry of the radiographic imaging system with respect to the reference area; (iii) determining a first collimation transformation based on an irradiated area in a first image and mapping the irradiated area onto the reference area; and (iv) determining a second collimation transformation by identifying an illuminated area in a second image by mapping the illuminated area onto the reference area.

The present invention relates to Intraluminal device guidance with minimized X-ray dose. In order to provide further dose reduction while solving the conflict of objectives to not impair guidance during intravascular interventions, a control device (10) for intraluminal device guidance with minimized X-ray dose is provided. The device comprises a data input 12, a data processor 14 and an output interface 16. The data input is configured: to provide an X-ray image (18) of a vascular structure with an inserted device having at least one distinctive feature identifiable in the X-ray image. The X-ray image is acquired with a primary radiation characteristic. The data processor is configured: to determine a signal to noise ratio relating to an image portion comprising the at least one distinctive feature; to compute a secondary radiation characteristic for acquiring secondary X-ray images with the secondary radiation characteristic to generate images for further guidance of the inserted device; and to select the primary radiation characteristic or the secondary radiation characteristic for acquiring further X-ray images. The selecting is dependent on at least one of the parameters comprising: current location within subject and current treatment phase. The output interface is configured: to provide the selected radiation characteristic for acquiring further X-ray images.

Proposed concepts thus aim to provide schemes, solutions, concepts, designs, methods and systems pertaining to answering queries. In particular, embodiments aim to provide a method for answering queries by generating both a primary answer and an auxiliary answer in response to a first query, and wherein in response to a second query, the auxiliary answer can first be consulted to check if it is relevant to the second query, in which case a new answer can be output without having to fully run the model again, thus saving time and processing power.

Methods and systems for performing the methods of magnetic resonance imaging (MRI) are presented. The method of MRI comprises: receiving (200) multiple MRI packages (144,146,148), wherein each MRI package is a grouping of multiple MRI pulse sequence parameters each specifying one or more package specific slices, wherein the multiple MRI pulse sequence parameters are adapted for configuring pulse sequence commands for implementing a physiologically gated MRI protocol; regrouping (202) the multiple MRI packages into interleaved acquisition groups (150,152,154,156) such that the one or more package specific slices for any of the multiple MRI packages is not repeated within each of the interleaved acquisition groups; repeatedly (204) receiving a periodic physiological signal descriptive of a physiological state of a subject; repeatedly (206) acquiring k-space data (158) by controlling the magnetic resonance imaging system with the pulse sequence commands triggered by the periodic physiological signal while sequentially adjusting the pulse sequence commands with the pulse sequence parameters of one of the interleaved acquisition groups; and providing (208) the acquired k-space data.

The subject-matter of the present disclosure relates to a computer implemented method for controlling a radiographic imaging system comprising determining (310) a first corrective transformation corresponding to a first configuration of the radiographic imaging system by: (i) obtaining (312) a first set of coordinates of reference points based on a known geometry, (ii) capturing (314) an image comprising the reference points, (iii) obtaining (316) a second set of coordinates of the reference points based on image analysis of the captured image, (iv) determining (318) the corrective transformation by minimising a reprojection error between the first set of coordinates and the second set of coordinates; and determining (320) a second corrective transformation by repeating steps (i) to (iv) for a second configuration. The corrective transformations are for changing a system parameter of one or more components of the radiographic imaging system when in the first configuration or the second configuration.

System (SYS) and related method for imaging. The system comprises a projection image accumulator (ACC) causing projection imagery (λ,λt) acquired by an interventional X-ray based imaging apparatus (IA) to be accumulated in a memory (MEM) whilst at least some such projection imagery (λ) is being displayed on a display device (DD) for image-based guidance of a user in performing a procedure in respect of a region of interest. A reconstructor (RECON) is capable of reconstructing at least one reconstructed image (m,mt), based at least on some of the accumulated projection imagery.

The present disclosure provides concepts for predicting wear of a brush head of an oral care device. The brush head comprises a brush body and cleaning elements mounted on the brush body for contact with an oral surface of a user. An image of the brush head including the cleaning elements is obtained. The image is then compared to reference image data describing an expected appearance of the cleaning elements of an unused brush head. A wear score indicating a degree of wear of the brush head is generated based on a result of the comparison of the image and the reference image data. In this way, an accurate prediction of an extent to which a brush head is worn may be obtained, based on which appropriate action can be recommended and/or actioned.