Patents Examined by Gregory H Curran
  • Patent number: 11506810
    Abstract: An NMR well logging tool is provided that includes a sensor and associated electronic circuitry. The sensor includes an array of RF antenna elements. The electronic circuitry includes at least one low-power integrated circuit and a plurality of high-power modules corresponding the RF antenna elements of the array. Each high-power module is coupled to a corresponding RF antenna element of the array and includes an RF amplifier that is configured to amplify RF pulses generated by the at least one low-power integrated circuit and supplied thereto for transmission by the corresponding antenna element. In embodiments, the RF amplifier of each high-power module can include an H-bridge circuit or other suitable RF amplifier.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: November 22, 2022
    Inventors: Yi-Qiao Song, Yiqiao Tang, Shin Utsuzawa, Tancredi Botto, Irfan Bulu, Martin Hurlimann
  • Patent number: 11497412
    Abstract: An apparatus to jointly measure oxygen utilization and tissue strain includes an imaging system and a computer processor operatively coupled to the imaging system. The computer processor is configured to control the imaging system to perform a pulse sequence on tissue of a subject. The computer processor also acquires oxygen utilization data and strain data responsive to the pulse sequence. The computer processor further determines an amount of strain on the tissue of the subject based at least in part on the strain data and an amount of oxygen utilization of the tissue of the subject based at least in part on the oxygen utilization data.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: November 15, 2022
    Inventors: Charles G. Cantrell, Keigo Kawaji, Amit R. Patel, Timothy J. Carroll
  • Patent number: 11493461
    Abstract: A method of estimating a wettability characteristic of a rock material includes acquiring a plurality of T2 distributions based on nuclear magnetic resonance (NMR) measurements of a rock material under a plurality of fluid saturated rock conditions, constructing a measurement matrix based on the plurality of T2 distributions, and performing non-negative factorization of the measurement matrix to determine feature components. The method also includes reconstructing the plurality of T2 distributions based on the feature components, and extracting a first set of T2 distributions associated with mobile water under a wetting condition and a second set of T2 distributions associated with mobile water under a non-wetting condition based on the feature components, and calculating a wettability index (WI) based on the first extracted set of T2 distributions and the second extracted set of T2 distributions.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: November 8, 2022
    Inventors: Baoyan Li, Hasan Kesserwan
  • Patent number: 11486953
    Abstract: Techniques are disclosed related to the compensation of phase variations introduced into k-space lines, which cause imaging artifacts. The techniques utilize the detection of motion via an encoding plus motion model, which does not require the use of additional prospective or retrospective motion detection techniques. The techniques described herein use the encoding plus motion model to reconstruct an initial image from a set of motion states, and then calculate phase information from images that are projected form the initial reconstructed image using a projection onto convex sets (POCS). The phase information is incorporated into the encoding plus motion model over several iterations to minimize data consistency error, thereby generating a refined image that compensates for patient motion over the set of motion states.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: November 1, 2022
    Assignees: Siemens Healthcare GmbH, The General Hospital Corporation
    Inventors: Daniel Polak, Kawin Setsompop, Stephen Farman Cauley
  • Patent number: 11488334
    Abstract: In a method for operating a magnetic resonance (MR) apparatus, MR raw-data is acquired from an acquisition region of a patient for a sampling region of k-space using a MR sequence that employs ultrashort echo times; a first MR image dataset is reconstructed from the MR raw-data of the k-space region; a second MR image dataset is reconstructed from the MR raw-data in a central subregion of the sampling region in k-space; a resolution of the second MR image dataset is interpolated to increase the resolution of the second MR image dataset to a resolution of the first magnetic resonance image dataset; and the first and second MR image datasets are combined to obtain an output MR image dataset.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: November 1, 2022
    Assignee: Siemens Healthcare GmbH
    Inventor: David Grodzki
  • Patent number: 11480913
    Abstract: There are provided a developer accommodating portion for accommodating the developer, a discharge portion formed with a discharge opening for discharging the developer accommodated in the developer accommodating portion, and an engaging portion 30. The engaging portion 30 is engaged with an engaged portion 11b with a mounting operation of a developer supply container 1 to displace a developer receiving portion 11 in an upward direction U so that the receiving opening communicates with the discharge opening. The engaging portion 30 has a holding portion 31 which is provided rotatably about a rotation shaft 41 and is provided with holding portion 21 to be engaged with the engaged portion 11b to hold the engaged portion 11b. With the mounting operation, the engaging portion 30 rotates about the rotation shaft 41 so that the engaged portion 11b held by the holding portion 31 moves upward U.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: October 25, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ayatomo Okino, Hiromasa Katayama, Nobuyuki Yomoda, Masato Yamaoka, Akihito Kamura, Koji Katayama, Tsukasa Mine, Katsuya Murakami, Keisuke Isobe, Shogo Yamasaki
  • Patent number: 11480887
    Abstract: An optical scanning device includes a housing that houses an optical system for generating a light ray for optical scanning, and has a dustproof glass for emitting the light ray to an outside, and a cleaning system that is assembled to the housing and cleans the dustproof glass. The cleaning system includes a cleaning member, and a holder that holds the cleaning member, and with the holder moved in a specified movement direction relative to the dustproof glass, the cleaning member cleans the dustproof glass. The cleaning member includes a cleaner member that is adapted to contact a surface of the dustproof glass, and a pressing member that has a pressing surface for pressing the cleaner member toward the dustproof glass and is formed of an elastic body. In the movement direction, a width of the cleaner member is wider than a width of the pressing surface.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: October 25, 2022
    Inventors: Shingo Yoshida, Tatsuya Kobayashi
  • Patent number: 11474170
    Abstract: A B0-mapping method determines the spatial distribution of a static magnetic field in a pre-selected imaging zone comprising computation of the spatial distribution of a static magnetic field from a spatial distribution of spin-phase accruals between magnetic resonance echo signals from the imaging zone and an estimate of the proton density distribution in the imaging zone. The invention provides the field estimate also in cavities and outside tissue. Also the field estimate of the invention suffers less from so-called phase-wraps.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: October 18, 2022
    Assignee: Koninklijke Philips N.V.
    Inventor: Miha Fuderer
  • Patent number: 11474174
    Abstract: The present disclosure provides a method for using a magnetic resonance system to measure magnetization data from a region of interest in a subject having a spin system that includes at least a first labile spin species and a second labile spin species experiencing chemical exchange. The method includes applying periodic radiofrequency irradiation to the spin system using a frequency swept pulse sequence having frequency and amplitude modulation functions, wherein sweeping a frequency of the RF irradiation together with amplitude modulation generates a magnetic field component having an effective field. The method further includes generating off resonance side bands in a frequency domain positioned adjacent the resonant frequency of the first labile spin species or the second labile spin species by applying the periodic RF irradiation to induce the instantaneous flip of the effective field with periodicity of RF irradiation tuned to the chemical shift difference of the exchanging sites.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: October 18, 2022
    Inventors: Shalom Michaeli, Timo Liimatainen, Hanne Laakso, Silvia Mangia
  • Patent number: 11474178
    Abstract: A method for generating a magnetic resonance image includes providing MR segment data records, wherein each MR segment data record has N×M frequency voxels in k-space. To reduce the acquisition time during MR segment recordings, the amount of MR data is reduced by incompletely sampling the k-space during a recording. The missing data of the MR segment data records are reconstructed twice: Preliminarily reconstructed MR segment data records are calculated first, with a reconstruction kernel obtained from reference data. Modified reference images containing phase information are obtained by creating phase images from the preliminarily reconstructed MR segment data records and combining these phase images with the absolute value of the reference image generated from the reference data. The second reconstruction kernels are ascertained therefrom in turn. In contrast to the first reconstruction kernel, these contain phase information, such that the missing data can be reconstructed without phase artifacts.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: October 18, 2022
    Inventor: Michael Herbst
  • Patent number: 11467241
    Abstract: Systems and methods for MR signal synchronization may be provided. The method may include determining a time difference in a local clock generator at a coil side assembly compared to a system clock generator at a system side assembly. The method may include maintaining a constant phase difference between clock signals generated by the local clock generator and by the system clock generator by correcting the local clock generator based on the time difference. The method may include acquiring MR echo signals by scanning at least a part of a subject in response to the clock signal generated by the corrected local clock generator. The method may further include digitizing the MR echo signal at the coil side assembly.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: October 11, 2022
    Inventor: Ling Ji
  • Patent number: 11467512
    Abstract: An image forming apparatus including a main body casing, a drum cartridge and a developing cartridge. The main body casing has an opening and a slot extending in from the opening toward an inside of the main body casing along a first direction. The drum cartridge and the developing cartridge are arranged in a second direction intersecting the first direction in a state where the drum cartridge and the developing cartridge are attached to the slot. The main body casing includes a drum guide groove configured to guide movement of the drum cartridge. The drum cartridge includes a drum protrusion configured to be engaged with the drum guide groove. A width of the drum guide groove in the second direction is decreased toward the inside of the main body casing from the opening.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: October 11, 2022
    Inventor: Hideshi Nishiyama
  • Patent number: 11464454
    Abstract: The present invention relates to an apparatus comprising: a seat for a patient; a support platform for the feet of the patient, positioned anteriorly to the seat; an alignment system allowing a patient's leg and its corresponding foot to be aligned in the three space planes in order to determine the tibia correct verticality; a system for properly positioning the foot on the platform including at least turrets able to allow pads to be applied in contact with the talus and/or scaphoid inside the foot and in contact with the calcaneus and/or cuboid outside the foot; a foot measurement system in a neutral position; an automatic real time driving system for properly positioning the leg and foot with numerical indication and direction of the movements to be carried out; a central unit capable for receiving and processing the data detected by the measurement system for footprint digitalization.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: October 11, 2022
    Assignee: DI MARTINO SRL
    Inventors: Mariano Di Martino, Giovanni Di Martino
  • Patent number: 11454691
    Abstract: Systems and methods to determine a first map of a first parameter based on first signals acquired by a magnetic resonance imaging system, the first map associating each of a plurality of voxels with a respective value of the first parameter, the first parameter quantifying a first physical characteristic of an object represented by the plurality of voxels, determine a second map of a second parameter based on the first signals, the second map associating each of the plurality of voxels with a respective value of the second parameter, the second parameter quantifying a second physical characteristic of the object, and determine a dark-blood phase-sensitive inversion recovery late gadolinium enhancement image based on the first map of the first parameter and on the second map of the second parameter.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: September 27, 2022
    Assignees: Siemens Healthcare GmbH, The United States of America, as represented by the Secretary, Department of Health and Human Services
    Inventors: Peter Kellman, Hui Xue, Kelvin Chow
  • Patent number: 11445933
    Abstract: Magnetic resonance imaging (“MRI”) data are corrected from corruptions due to physiological changes using a self-navigated phase correction technique. Unlike motion correction techniques, the effects of physiological changes (e.g., breathing and respiration) are corrected by making the MRI data self-consistent relative to an absolute uncorrupted phase reference. This phase correction information can be extracted from the acquisition itself, thereby eliminating the need for a separate navigator scan, and establishing an accelerated acquisition. This absolute reference can be computed in a data segmented space, and the subsequent data can be corrected relative to this absolute reference with low-resolution phases.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: September 20, 2022
    Inventors: Steen Moeller, Sudhir Ramanna, Mehmet Akcakaya
  • Patent number: 11422212
    Abstract: A MR wireless receiving coil device may include transmitters and receivers, the number of the receivers being equal to or greater than the number of the transmitters; each transmitter comprises: a coil group, an ADC group, two baseband low-pass filters, and an IQ modulation transmitter, wherein the coil group is connected to the ADC group, the ADC group is connected to the two baseband low-pass filters, the two baseband low-pass filters are connected to the IQ modulation transmitter, and the IQ modulation transmitter is provided with an antenna; each coil group contains one or more coils, and the maximum number of coils contained in each coil group is determined by available bandwidth, modulation scheme, and the bandwidth, sampling rate, and sampling accuracy of MR signal. The device and corresponding method advantageously allows an increase in the amount of magnetic resonance information transmitted per unit frequency band.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: August 23, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: JianMin Wang, Markus Vester
  • Patent number: 11422282
    Abstract: A method for nuclear magnetic resonance (NMR) logging is disclosed that pulses, using a quadrature antenna of an NMR logging tool in a borehole, a circularly polarized (CP) signal into a formation surrounding the borehole. The method also pulses, using the quadrature antenna, a reverse circularly polarized (RCP) signal into the formation. A sensor of the NMR logging tool detects a first NMR signal from the formation in response to the RCP pulses and a second NMR signal from the formation in response to the CP pulses. A correct transverse magnetization value is then recovered based, at least in part, on the first NMR signal and the second NMR signal.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: August 23, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Yunzhao Xing, Rebecca Corina Jachmann
  • Patent number: 11422217
    Abstract: For reconstruction in medical imaging, such as reconstruction in MR imaging, a high-resolution image is reconstructed using a generator of a progressive generative adversarial network (PGAN or progressive GAN). In machine training the network, both the generator and discriminator of the GAN are grown progressively: starting from a low resolution, new layers are added that model finer details as training progresses. The resulting generator may be better able to handle high-resolution information than a generator of a GAN.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: August 23, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Boris Mailhe, Simon Arberet, Anatole Louis Jerome Moreau, Mariappan S. Nadar
  • Patent number: 11415649
    Abstract: A coil assembly for MR imaging includes an RF coil element and a shim coil array with a shim coil element. The shim coil element is physically separated from the RF coil element. The shim coil element includes a DC current loop having a DC power supply connection to allow DC current to generate a local B0 magnetic field. The coil assembly simultaneously provides an RF mode for at least one of transmit or receive and a direct current mode to generate a local B0 magnetic field for at least one of B0 shimming an imaging space, MRI spatial encoding of tissue spins, or MRI temporal encoding of tissue spins. The mutual inductance between the shim coil element and the RF coil element is minimized by configuration of blocking elements in the shim coil in order to minimize the RF interaction there between.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 16, 2022
    Inventors: Hui Han, Debiao Li
  • Patent number: 11415567
    Abstract: Nuclear magnetic resonance (NMR) relaxation and/or diffusion measurements are used to deduce fluid compositional information such as a chain-length distribution, which may then be used to predict the true boiling points (TBP) of a sample of a complex hydrocarbon fluid mixture, such as a crude oil. The NMR measurements may be considered a fast and portable proxy measurement in estimating fluid TBP distributions in lieu of distillation methods, or the simulated distillation by gas chromatography.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: August 16, 2022
    Inventors: Yiqiao Tang, Yi-Qiao Song, Sharath Chandra Mahavadi, Ravinath Kausik Kadayam Viswanathan, Shawn David Taylor, Gary Potten