Patent classifications
G01R33/286
System and method for real-time magnetic resonance imaging data visualization in three or four dimensions
A system for displaying and interacting with magnetic resonance imaging (MRI) data acquired using an MRI system includes an image reconstruction module configured to receive the MRI data and to reconstruct a plurality of images using the MRI data, an image rendering module coupled to the image reconstruction module and configured to generate at least one multidimensional image based on the plurality of images and a user interface device coupled to the image rendering module and located proximate to a workstation of the MRI system. The user interface device is configured to display the at least one multidimensional image in real-time and to facilitate interaction by a user with the multidimensional image in a virtual reality or augmented reality environment.
Method for Marking an Entry Position for an Injection Apparatus in Interventional MR Imaging
A method for marking an entry position for an injection apparatus on a surface of a patient positioned inside a patient receiving region of a magnetic resonance device. The method includes providing a virtual entry position, introducing a marking apparatus into the patient receiving region, acquiring time-resolved MR image data from the marking apparatus by the magnetic resonance device, ascertaining a current position of the marking apparatus based on the time-resolved MR image data, iteratively changing the current position of the marking apparatus using the virtual entry position and the current position, and delivering the liquid from the marking apparatus when the current position matches the virtual entry position.
MEDICAL IMAGE GUIDANCE MARKER
The present invention provides a medical image guidance marker to be placed in a body, adapted to be applicable to at least all three types of imaging modalities, namely, MRI, ultrasound, and CT, and to minimize the occurrence of artifacts. The present invention provides a medical image guidance marker to be placed in a body. The medical image guidance marker is made of an alloy with a magnetic susceptibility in the range from −13 ppm to −5 ppm and has a shape of a coil. The coil is formed of a wire with a wire diameter of not less than 0.15 mm and not more than 0.45 mm and has a coil diameter of not less than 0.55 mm and not more than 1.20 mm, and the pitch of the coil is not less than 0.3 mm and not more than 1.5 mm and is not less than 1.8 times and not more than 4 times the wire diameter.
INTERVENTIONAL LOCALIZATION GUIDE AND METHOD FOR MRI GUIDED PELVIC INTERVENTIONS
Interventional localization guides and methods for MRI guided pelvic interventions are disclosed. The interventional localization guides can include a stereotactic perineum positioning device having integrated MR receive coil array and fiducial receive array. The interventional localization guide can also include a physical template for guiding a surgical device, such as a biopsy needle. In various instances, the MRI guided pelvic interventions including co-registering biopsy locations on third party MRI scans.
Mechanical interface device to bone structure with an integrated targeting reference, allowing for surgical device attachment
Device 1 for fixation to the skull 2 of a patient that can serve as a fiducial marker in scan guided surgical operations using a surgical instrument. The device 1 comprises a material translucent for the applied electromagnetic waves of the scan and a fiducial marker and where the device 1 comprises means to fixate the device in a well-defined manner to the surgical instrument.
IMPLANTABLE ARRAY WITH A REFERENCE STRUCTURE AND A METHOD OF IMAGING THE SAME
An implantable array suitable for being placed in anatomic tissue of a human or animal body is provided. The implantable array has a substrate and a reference structure, the reference structure being formed by a number of notches arranged in at least one outer edge of the substrate, the reference structure defines a spatial relationship with predefined points of the array.
MRI compatible implantable medical devices and methods
An implantable medical device configured to be compatible with the environment inside an MRI machine. The implantable medical device includes a housing constructed of an electrically conductive material and pulse generation circuitry within the housing for generating electrical voltage pulses. The implantable medical device further includes a first conductor that is configured to transmit the electrical voltage pulses from the pulse generation circuitry to a patient's cardiac tissue and a second conductor that is configured to provide an electrically conductive path from the patient's cardiac tissue back to the pulse generation circuitry. The implantable medical device further includes a selectively interruptible electrically conductive path connecting the pulse generation circuitry with the housing.
Extension tube assembly and related medical fluid transfer systems and methods
Devices for transferring fluid to or from a subject include an extension tube assembly with an axially extending inner tube configured to couple to an elongate tubular cannula having opposing proximal and distal ends with an axially extending lumen and an axially extending inner tube. The inner tube extending through the tubular cannula defines an exposed needle tip and is in fluid communication with the inner tube of the extension tube assembly. The needle tip extends out of a distal end of the tubular cannula a suitable distance.
SYSTEM AND METHOD FOR DEVICE TRACKING VIA MAGNETIC RESONANCE IMAGING WITH LIGHT-MODULATED MAGNETIC SUSCEPTIBILITY MARKERS
Described here are systems and methods for using a laser-induced demagnetization of magnetic particles disbursed in a tracking marker to generate variable susceptibility effects that can be imaged with magnetic resonance imaging (“MRI”). As one example, laser power is delivered to nickel particles using fiber optics. This demagnetization effect can be used in rapid tracking of interventional devices by subtracting the two images acquired when the laser is off and on.
Steerable sheath including elastomeric member
An MR compatible steerable sheath with elastomeric member is provided. The elastomeric member is configured to serve as a reservoir and receive contrast media therewithin. The elastomeric member is positioned on the distal end of the steerable sheath and may circumferentially surround the sheath shaft or be offset from a longitudinal axis thereof. In operation, the contrast media allows a user to view the distal tip of the steerable sheath by virtue of the contrast media contained within the elastomeric member.