Patents by Inventor Ning Jin
Ning Jin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20200088820Abstract: A system includes acquisition of a plurality of displacement-encoded magnetic resonance (MR) phase images, determination of first pixels associated with one or more image regions of the plurality of displacement-encoded MR phase images, determination of representative pixel values of the first pixels based on pixel values of the first pixels within one or more of the plurality of displacement-encoded MR phase images, determination of a relationship between background phase offset error and pixel location based on the determined representative pixel values and the pixel locations of the first pixels, determination of a background phase offset error for each of one or more other pixels of the plurality of displacement-encoded MR phase images based on the relationship and on the pixel locations of the one or more other pixels, and generation of a corrected MR phase image of one of the plurality of displacement-encoded MR phase images based on the background phase offset error determined for each of the one or moType: ApplicationFiled: September 17, 2018Publication date: March 19, 2020Inventors: Xiaodong Zhong, John Oshinski, Ning Jin
-
Patent number: 10534059Abstract: Methods and systems for accelerated Phase-contrast magnetic resonance imaging (PC-MRI). The technique is based on Bayesian inference and provides for fast computation via an approximate message passing algorithm. The Bayesian formulation allows modeling and exploitation of the statistical relationships across space, time, and encodings in order to achieve reproducible estimation of flow from highly undersampled data.Type: GrantFiled: May 20, 2016Date of Patent: January 14, 2020Assignees: OHIO STATE INNOVATION FOUNDATION, SIEMENS MEDICAL SOLUTIONS USA, INC.Inventors: Adam Rich, Lee C. Potter, Ning Jin, Joshua Ash, Orlando P. Simonetti, Rizwan Ahmad
-
Patent number: 10519880Abstract: A torque requesting module generates a torque request for an engine based on driver input. A model predictive control (MPC) module: identifies sets of possible target values based on the torque request, each of the sets of possible target values including target effective throttle area percentage; determines predicted operating parameters for the sets of possible target values, respectively; determines cost values for the sets of possible target values, respectively; selects one of the sets of possible target values based on the cost values; and sets target values based on the possible target values of the selected one of the sets, respectively, the target values including a target pressure ratio across the throttle valve. A target area module determines a target opening area of the throttle valve based on the target effective throttle area percentage ratio. A throttle actuator module controls the throttle valve based on the target opening.Type: GrantFiled: April 13, 2017Date of Patent: December 31, 2019Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Nicola Pisu, Vincenzo Alfieri, Julian R. Verdejo, Gary Robert Cygan, Jr., Ning Jin
-
Publication number: 20190301387Abstract: A method, control system, and propulsion system use model predictive control to control and track several parameters for improved performance of the propulsion system. Numerous sets of possible command values for a set of controlled variables are determined. Initial constraints for the controlled variables are determined, which include upper and lower limits for each controlled variable and upper and lower rate-of-change limits for each controlled variable. A set of consolidated constraint limits for the controlled variables is then determined. Each consolidated constraint limit is determined by consolidating one of the upper and lower limits with one of the upper and lower rate-of-change limits. A cost for each set of possible command values is determined, and the set of possible command values that has the lowest cost and falls within the set of consolidated constraint limits is selected for use in controlling the propulsion system.Type: ApplicationFiled: March 27, 2018Publication date: October 3, 2019Inventors: Ning Jin, Nicola Pisu, Ruixing Long, David N. Hayden
-
Publication number: 20190167125Abstract: In a method and magnetic resonance (MR) apparatus for pulse wave velocity (PWV) measurement along the aorta of a subject using MR imaging, a multislice cardio synchronized segmented ciné MR data acquisition sequence is optimized in order to enhance inflow representation in the slice images, in order to make the multislice MR data acquisition sequence viable for clinical uses, so as to acquire intensity-based MR data from two transverse slices spaced from each other along the descending aorta. The respective intensities of relevant pixels in at least two respective slice images are analyzed in order to identify the arrival of a pulse wave in the respective slices by the onset of flow enhancement in the slices, represented by intensity changes in the pixels. From the onset of flow enhancement in the respective slice images, PWV is calculated. An electronic signal representing the calculated PWV is then provided from a computer.Type: ApplicationFiled: December 1, 2017Publication date: June 6, 2019Applicant: Siemens Healthcare GmbHInventors: Peter Speier, Kelvin Chow, Ning Jin
-
Publication number: 20190156153Abstract: Machine-learning models and behavior can be visualized. For example, a machine-learning model can be taught using a teaching dataset. A test input can then be provided to the machine-learning model to determine a baseline confidence-score of the machine-learning model. Next, weights for elements in the teaching dataset can be determined. An analysis dataset can be generated that includes a subset of the elements that have corresponding weights above a predefined threshold. For each overlapping element in both the analysis dataset and the test input, (i) a modified version of the test input can be generated that excludes the overlapping element, and (ii) the modified version of the test input can be provided to the machine-learning model to determine an effect of the overlapping element on the baseline confidence-score. A graphical user interface can be generated that visually depicts the test input and various elements' effects on the baseline confidence-score.Type: ApplicationFiled: April 13, 2018Publication date: May 23, 2019Applicant: SAS Institute Inc.Inventors: AYSU EZEN CAN, NING JIN, ETHEM F. CAN, XIANGQIAN HU, SARATENDU SETHI
-
Patent number: 10258246Abstract: MRI techniques seek to simultaneously measure physiological parameters in multiple directions, requiring the application of multiple encoding magnetic field gradient waveforms. The use of multiple encoding waveforms degrades the temporal resolution of the measurement, or may distort the results depending on the methodology used to derive physiological parameters from the measured data. The disclosed Direct Inversion Reconstruction Method (DiR) provides distortion-free velocity images with high temporal resolution, without changing the method of acquiring the phase data. The disclosed method provides a more stable and accurate recovery of phase-based dynamic magnetic resonance signals with higher temporal resolution than current state-of-the-art methods.Type: GrantFiled: April 22, 2014Date of Patent: April 16, 2019Assignee: Ohio State Innovation FoundationInventors: Rizwan Ahmad, Orlando P. Simonetti, Yu Ding, Ning Jin
-
Patent number: 10186032Abstract: Embodiments can provide a computer-implemented method for simultaneous multi-slice pulse wave velocity measurement, the method comprising simultaneously acquiring a plurality of multiple parallel images slices from a medical imaging device; shifting the plurality of image slices through modulation of the line-by-line phase patterns for each slice in the plurality of slices; deriving a plurality of image waveforms from the plurality of slices; measuring a distance between a plurality of imaging planes corresponding to the plurality of image slices; determining, for each of the image waveforms, a time-to marker; determining the temporal shift by calculating the difference between the time-to markers; and computing the pulse wave velocity by dividing the distance between the plurality of imaging planes by the temporal shift.Type: GrantFiled: June 15, 2017Date of Patent: January 22, 2019Assignee: Siemens Healthcare GmbHInventors: Ning Jin, Jiang Pang, Dingxin Wang, Peter Speier, Shivraman Giri
-
Publication number: 20180365823Abstract: Embodiments can provide a computer-implemented method for simultaneous multi-slice pulse wave velocity measurement, the method comprising simultaneously acquiring a plurality of multiple parallel images slices from a medical imaging device; shifting the plurality of image slices through modulation of the line-by-line phase patterns for each slice in the plurality of slices; deriving a plurality of image waveforms from the plurality of slices; measuring a distance between a plurality of imaging planes corresponding to the plurality of image slices; determining, for each of the image waveforms, a time-to marker; determining the temporal shift by calculating the difference between the time-to markers; and computing the pulse wave velocity by dividing the distance between the plurality of imaging planes by the temporal shift.Type: ApplicationFiled: June 15, 2017Publication date: December 20, 2018Inventors: Ning Jin, Jiang Pang, Dingxin Wang, Peter Speier, Shivraman Giri
-
Publication number: 20180363580Abstract: A method for controlling an actuator system of a motor vehicle includes utilizing a model predictive control (MPC) module with an MPC solver to determine optimal positions of a plurality of actuators subject to constraints, optimizing a cost function for a set of actuator duty cycles for controlling positions of the plurality of actuators, determining if the MPC solver has determined optimal actuator positions for the plurality of actuators, and applying a linear quadratic regulator (LQR) solution if the MPC solver fails to determine optimal actuator positions for the plurality of actuators.Type: ApplicationFiled: June 16, 2017Publication date: December 20, 2018Inventors: Ning Jin, Ruixing Long, Nicola Pisu
-
Patent number: 10156197Abstract: A method for controlling an actuator system of a motor vehicle includes utilizing a model predictive control (MPC) module with an MPC solver to determine optimal positions of a plurality of actuators subject to constraints, optimizing a cost function for a set of actuator duty cycles for controlling positions of the plurality of actuators, determining if the MPC solver has determined optimal actuator positions for the plurality of actuators, and applying a linear quadratic regulator (LQR) solution if the MPC solver fails to determine optimal actuator positions for the plurality of actuators.Type: GrantFiled: June 16, 2017Date of Patent: December 18, 2018Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Ning Jin, Ruixing Long, Nicola Pisu
-
Patent number: 10109050Abstract: A computer-implemented method for performing spatiotemporal background phase correction for phase contrast velocity encoded magnetic resonance imaging includes performing a phase contrast magnetic resonance imaging scan of a region of interest within a patient to yield a complex image and calculating a plurality of filter cut-off frequencies based on physiological limits associated with the patient. A spatiotemporal filter is created based on the plurality of filter cut-off frequencies. This spatiotemporal filter is applied to the complex image to yield a low-pass filtered complex image. Then, complex division is performed using the complex image and the low-pass filtered complex image to yield a corrected image.Type: GrantFiled: June 1, 2016Date of Patent: October 23, 2018Assignees: Siemens Healthcare GmbH, Northwestern UniversityInventors: Bruce S. Spottiswoode, Michael Markl, Ning Jin
-
Publication number: 20180298838Abstract: A torque requesting module generates a torque request for an engine based on driver input. A model predictive control (MPC) module: identifies sets of possible target values based on the torque request, each of the sets of possible target values including target effective throttle area percentage; determines predicted operating parameters for the sets of possible target values, respectively; determines cost values for the sets of possible target values, respectively; selects one of the sets of possible target values based on the cost values; and sets target values based on the possible target values of the selected one of the sets, respectively, the target values including a target pressure ratio across the throttle valve. A target area module determines a target opening area of the throttle valve based on the target effective throttle area percentage ratio. A throttle actuator module controls the throttle valve based on the target opening.Type: ApplicationFiled: April 13, 2017Publication date: October 18, 2018Inventors: Nicola Pisu, Vincenzo Alfieri, JR., Julian R. Verdejo, Gary Robert Cygan, JR., Ning Jin
-
Patent number: 10047686Abstract: A system includes a residual per cylinder calculation module that calculates an amount of residual (i.e., trapped exhaust gas) within an engine cylinder. A temperature calculation module calculates a temperature within the engine cylinder based on the amount of residual. A first air per cylinder (APC) calculation module calculates total charge content within the engine cylinder based on the temperature and calculates a first amount of air trapped within the engine cylinder based on the total charge content and the amount of residual. A residual mass fraction (RMF) calculation module calculates an RMF of the exhaust gas based on the amount of trapped exhaust gas at EVC and the total charge content. A second APC calculation module determines a backflow of the charged content into the engine cylinder and calculates a second amount of air trapped within the engine cylinder based on the backflow and the first amount of air.Type: GrantFiled: February 26, 2016Date of Patent: August 14, 2018Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: Ning Jin
-
Patent number: 9983288Abstract: A novel free-breathing myocardial T2* mapping combining multiple single-shot black-blood GRE-EPI images with automatic non-rigid motion correction. The present disclosure describes a method of accurate myocardial T2* measurements that is insensitive to respiratory motion, and is likely to reduce sensitivity to arrhythmia as well since each image is acquired in a single heart beat. The T2*-weighted GRE-EPI images are motion corrected using, e.g., automatic non-rigid motion correction to reduce mis-registration due to respiratory motion. A T2* map is calculated using the motion-corrected T2*-weighted images by fitting pixel intensities to a, e.g., two-parameter mono-exponential model.Type: GrantFiled: January 26, 2015Date of Patent: May 29, 2018Assignee: Ohio State Innovation FoundationInventors: Ning Jin, Marie-Pierre Jolly, Orlando Simonetti
-
Patent number: 9911062Abstract: Systems and methods of correcting eddy current-induced background phase (EC-BP) in magnetic resonance imaging (PC-MRI) data. The method includes acquiring a slice of interest (SOI) at a first table position using a magnetic resonance imaging (MRI) scanner, the slice of interest having a predetermined imaging orientation and being acquired having predetermined gradient waveforms; acquiring at least one additional slice at a second table position using the MRI scanner, the at least one additional slice having a same imaging orientation as the slice of interest and being acquired using the same gradient waveforms as the slice of interest; determining time-averaged phase maps from the slice of interest and the at least one additional slice; determining a correction map from the time-averaged phase maps; and correcting a background phase (BP) of the slice of interest using the correction map.Type: GrantFiled: October 20, 2015Date of Patent: March 6, 2018Assignee: Ohio State Innovation FoundationInventors: Rizwan Ahmad, Ning Jin, Orlando P. Simonetti
-
Publication number: 20170352151Abstract: A computer-implemented method for performing spatiotemporal background phase correction for phase contrast velocity encoded magnetic resonance imaging includes performing a phase contrast magnetic resonance imaging scan of a region of interest within a patient to yield a complex image and calculating a plurality of filter cut-off frequencies based on physiological limits associated with the patient. A spatiotemporal filter is created based on the plurality of filter cut-off frequencies. This spatiotemporal filter is applied to the complex image to yield a low-pass filtered complex image. Then, complex division is performed using the complex image and the low-pass filtered complex image to yield a corrected image.Type: ApplicationFiled: June 1, 2016Publication date: December 7, 2017Inventors: Bruce S. Spottiswoode, Michael Markl, Ning Jin
-
Patent number: 9797318Abstract: A tangible computer readable medium of a vehicle includes object code referencing a plurality of variables, the object code for: identifying sets of possible target values based on air and exhaust setpoints for an engine; generating predicted parameters based on a model of the engine and the sets of possible target values, respectively; selecting one of the sets of possible target values based on the predicted parameters; setting target values based on the selected one of the sets of possible target values, respectively; and controlling opening of a throttle valve based on a first one of the target values. The tangible computer readable medium also includes calibration data stored separately and that includes predetermined values for the variables referenced in the object code, respectively. At least one processor executes the object code using the predetermined values to perform the identifying, the generating, the selecting, the setting, and the controlling.Type: GrantFiled: September 20, 2013Date of Patent: October 24, 2017Assignee: GM Global Technology Operations LLCInventors: Sharon L. Storch, James A. Shore, Kevin C. Wong, Ning Jin
-
Patent number: 9784198Abstract: A requesting module generates a first torque request for an engine based on driver input. A conversion module converts the first torque request into a second torque request. A model predictive control (MPC) module determines a current set of target values based on the second torque request, a model of the engine, a tableau matrix, and a basic solution matrix. The MPC module: initializes the basic solution matrix to a predetermined matrix that is dual feasible; selectively iteratively updates the basic solution matrix and columns of the tableau matrix; determines changes for the target values, respectively, based on entries of the basic solution matrix resulting from the selective iterative updating; and determines the current set of target values by summing the changes with a last set of target values, respectively. An actuator module controls an engine actuator based on a first one of the current set of target values.Type: GrantFiled: April 1, 2015Date of Patent: October 10, 2017Assignee: GM Global Technology Operations LLCInventors: Ruixing Long, Ning Jin
-
Patent number: 9714616Abstract: An engine control system for a vehicle may include a sequence determination module that generates a first set of possible MPC target values and a second set of possible MPC target values. A cost module determines a first cost for the first set of possible MPC target values and a second cost for the second set of possible MPC target values. A selection module that selects MPC target values from one of the first and second sets of possible MPC target values based on the first and second costs. A transition module that receives the MPC target values, compares the MPC target values with a plurality of previous control requests, and selects a set of target values ranging from the previous control requests to the MPC target values that control a plurality of engine functions.Type: GrantFiled: March 26, 2014Date of Patent: July 25, 2017Assignee: GM Global Technology Operations LLCInventors: Ning Jin, Christopher E. Whitney, Jyh-Shin Chen, Kevin C. Wong