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Trademark
Shanghai United Imaging Healthcare Co. | Date: 2013-04-18

Medical apparatus and instrument for diagnostic use, namely, apparatus for medical diagnostic testing in the fields of cancer or other tissue-based diagnostic testing, cytology and cell-based testing; radiological apparatus for medical purposes; apparatus for clinical diagnosis for the detection of cancer; radiotherapy apparatus; X-ray apparatus for medical use; X-ray diagnostic apparatus; radioisotope therapy apparatus and instruments; medical products, namely, therapeutic beds.


A method and a system for measuring and calibrating an imaging magnetic field in a magnetic resonance apparatus are provided. The method includes: providing the imaging magnetic field, where the imaging magnetic field is adapted for scanning an object; sampling a signal corresponding to the imaging magnetic field; processing the signal to obtain an actual magnetic field intensity; and calibrating based on a difference between the actual magnetic field intensity and a target magnetic field intensity. The system includes: a magnetic component, adapted for scanning an object to be imaged; a sampling unit, adapted for sampling a signal corresponding to the imaging magnetic field; a processing unit, adapted for processing the signal to obtain an actual magnetic field intensity; a calibration unit, adapted for calibrating based on a difference between the actual magnetic field intensity and a target magnetic field intensity; and a control unit, adapted for controlling the system.


Trademark
Shanghai United Imaging Healthcare Co. | Date: 2015-01-19

Medical apparatus and instruments, namely, medical and electromedical magnetic resonance apparatus and computed tomography apparatus, and parts therefor; diagnostic apparatus for medical purposes, namely, medical and electromedical magnetic resonance apparatus and computed tomography apparatus, and parts therefor; medical products, namely, therapeutic beds; medical X-ray apparatus; protection devices against X-rays, for medical purposes; apparatus and installations for the production of X-rays, for medical purposes; radiological apparatus for medical purposes; radiotherapy apparatus; medical ultrasound equipment; isotope facilities used for medical diagnose/treatment, namely, radioisotope therapy apparatus and instruments.


Patent
Shanghai United Imaging Healthcare Co. | Date: 2014-12-30

A method and an apparatus for reconstruction of magnetic resonance imaging are provided. The method includes collecting data in each initial channel and filling the data in an initial K-space, the data including data in a calibration data area and data in an undersampled area; constructing a target virtual space, and mapping initial K-space data to the target virtual space; constructing, in the target virtual space, a target optimized virtual space by retaining channel data having a high signal-to-noise ratio; filling out the undersampled area in the target optimized virtual space, and acquiring complete data in the target optimized virtual space; converting the complete data in the target optimized virtual space to an image domain to obtain an image. The method advantageously increases the signal-to-noise ratio of the channel data and significantly improves the image quality.


Patent
Shanghai United Imaging Healthcare Co. | Date: 2013-12-20

A method and a parallel acquisition image reconstruction device for magnetic resonance imaging are provided. The method may include: sampling magnetic resonance signals from a plurality of channels, and filling the magnetic resonance signals in an initial k-space; obtaining a first virtual space by performing a mathematical transformation, and obtaining a second virtual space by reserving virtual channels of the first virtual space; calculating a first combination coefficient, and a second combination coefficient; putting the first combination coefficient and the second combination coefficient into a predetermined objective function to obtain the data of the second virtual space; and transforming the data of the second virtual space to an image domain to obtain a reconstructed image. The method of the present disclosure reserves data of channels having a high signal-to-noise ratio to serve as the second virtual space, whereby the image reconstruction speed and signal-to-noise ratio of image are improved.

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