Patent classifications
G01R33/4808
CORRECTING THE MAGNETIC FIELD OF A MEDICAL APPARATUS WITH A GANTRY
A method of correcting a magnetic field of a medical apparatus (300) comprising a magnetic resonance imaging system (302). The MRI system includes a magnet (306) for generating the magnetic field within an imaging zone 318. The magnet generates a magnetic field with a zero crossing (346, 404) outside of the imaging zone. The medical apparatus further comprises a gantry (332) configured for rotating a ferromagnetic component (336, 510) about a rotational axis (333). The method comprises the step of installing (100, 200) a magnetic correcting element (348, 900, 1000) located on a radial path (344, 504) perpendicular to the rotational axis. The magnetic correcting element is positioned on the radial path such that change in the magnetic field within the imaging zone due to the ferromagnetic component is reduced. The method further comprises repeatedly: measuring (102, 202, 1204) the magnetic field within the imaging zone; determining (104, 204, 1206) the change in the magnetic field in the imaging zone; and adjusting (106, 206, 1208) the position of the magnetic correcting element along the radial path if the change in the magnetic field is above a predetermined threshold.
Cuttings Analysis For Improved Downhole NMR Characterisation
A method for combining nuclear magnetic resonance (NMR) analysis and digital rock physics (DRP) analysis based on drilling cuttings or other rock samples for improved downhole nuclear magnetic resonance validation and characterisation. A system for performing the method also is provided.
MRI detection of free-radicals from radiation
Embodiments now disclosed herein provide an apparatus and method in which free radicals can be detected in a substance by MRI without changing the MRI static field.
Operation and control of magnetic resonance imaging apparatus
A combined MRI and radiotherapy apparatus comprises a radiotherapeutic source, an MRI system, a patient support, drive motors for the patient support arranged to adjust the position of the patient support while a patient is on the support, a control panel having a user-operable input interface for controlling the drive motors, and a display unit. A mounting arrangement for a display device comprises a transparent cover, a display panel held against a rear face of the cover so as to be visible through a front face of the cover, and a retaining structure for holding the display panel in place. The retaining structure comprises a chassis fixable in position relative to the cover, the chassis having at least one resilient finger extending therefrom alongside a rear face of the display panel, a part of which bears against the rear face of the display panel to resiliently urge the display panel against the rear face of the cover. The radiotherapeutic source, MRI system, patient support and the control panel will usually be located within an enclosed space, to confine the therapeutic radiation; a second control panel is provided outside the enclosed space, able to control at least the radiotherapy source.
MR image-guided radiation controlling device
There is provided a patient's cranial position monitoring and controlling device for controlling a magnetic resonance (MR) guided radiation source module via an MR-guided radiation controlling device connected to the patient's cranial position monitoring and controlling device and an MR-guided radiation system including a patient's cranial position monitoring and controlling device, which allows for better MR-imaging while allowing patient position monitoring close to the patient.
Systems and Methods for Predicting and Treating Neurological Condition Relapses
Systems and methods for predicting and treating relapses for neurological conditions in accordance with embodiments of the invention are illustrated. One embodiment includes a method for predicting and treating a clinical neurological condition relapse. The method includes steps for selecting a threshold heart rate variability value for a patient suffering from a clinical neurological condition, monitoring, using a cardiac monitor, the heart rate variability of the patient over time, providing an indicator that a relapse is imminent when the heart rate variability of the patient falls below the threshold heart rate variability value, and treating the patient using a transcranial magnetic stimulation device by applying an accelerated theta burst stimulation protocol where the transcranial magnetic stimulation target is the left prefrontal dorsolateral cortex.
METHODS AND SYSTEMS FOR DETERMINING AND CORRECTING IMAGING ARTIFACTS
Methods, systems, and apparatus for signal artifact detection and reduction are provided. The signal artifact may comprise an interference between an electroencephalography (EEG) signal and a magnetic resonance imaging (MRI) signal arising out of simultaneous EEG and MRI treatment.
System, method and computer-accessible medium for facilitating noise removal in magnetic resonance imaging
An exemplary system, method and computer-accessible medium for generating a denoised magnetic resonance (MR) image(s) of a portion(s) of a patient(s) can be provided, which can include, for example, generating a plurality of MR images of the portion(s), where a number of the MR images can be based on a number of MR coils in a MR apparatus used to generate the MR images, generating MR imaging information by denoising a first one of the MR images based on another one of the MR images, and generating the denoised MR image(s) based on the MR imaging information. The number of the MR coils can be a subset of a total number of the MR coils in the MR apparatus. The number of the MR coils can be a total number of the MR coils in the MR apparatus. The MR information can be generated by denoising each of the MR images based on the other one of the MR images.
Medical apparatus
The present invention relates to a medical apparatus which includes a motion mechanism which has at least one degree of freedom, an actuator configured to drive the motion mechanism and a control unit configured to control the actuator, and which operates in a magnetic field environment of an MRI, the medical apparatus including: a data storage unit in which data related to magnetic susceptibility of the actuator is stored; a calculating unit configured to calculate information related to an influence which the actuator exerts upon the magnetic field environment by calculation based on the magnetic susceptibility; and a communication unit configured to output the information to the MRI. An influence which an apparatus which operates in a strong magnetic field environment exerts upon an MR image can be reduced.
Determining position of magnetic resonance data with respect to magnetic field sensors
According to an example aspect of the present invention, there is provided generating, Low-Field-Magnetic Resonance Imaging, LF-MRI, or Ultra-Low-Field Magnetic Resonance Imaging, ULF-MRI, data with respect to an image frame, determining a sensorwise agreement of the data with determined sensitivity profiles, and determining a mapping between the image frame and a sensor frame, such that the sensorwise agreement has been fulfilled.