Wisconsin Alumni Research Foundation

Ethan K Brodsky

Charles Anthony Mistretta

Walter Francis Block

Erick Oberstar

Justin Mertes-Mistretta

Scott Brian Reeder

Krishna Nagaraj Kurpad

Orhan Unal

Catherine Judith Moran

Miles E Olsen

A system and methods are provided for controlling interventional devices using magnetic resonance imaging ('MRI') guidance. In some aspects, the method includes arranging a pivoting guide about a subject's anatomy that is configured to direct an interventional device toward a selected target point within the subject's anatomy, generating, using an MRI system, MR data associated with markers placed on the pivoting guide, and determining a vector defining an orientation of the pivoting guide from locations for the markers identified using the MR data. The method also includes orienting the pivoting guide in multiple directions to determine multiple vectors, and identifying a pivot point for the pivoting guide using the determined vectors. The method further includes determining a trajectory for the interventional device using the identified pivot point and the selected target point, and controlling the interventional device along the determined trajectory.

System and method for real-time interventional device localization using magnetic resonance imaging

A night vision device and method for filtering a series of image frames that depict a moving subject, which thereby improves the signal-to-noise ratio of each image frame, is provided. A composite image is formed for each image frame by combining pixel values in a current image frame with pixel values in composite images corresponding to image frames acquired before the current image frame. Additionally, pixels values in image frames acquired subsequent to the acquisition of the current image frame are included when forming the composite image. A bi-directional recursive filter is used to weight the contributions from the previous composite images and subsequent image frames with a decay constant. Motion of the imaging system is optionally compensated for by establishing a moving reference frame and shifting the image frames to account for this motion; thus, registering the image frames before filtering the current image frame.

Vision system and method for motion adaptive integration of image frames

A system and method of both tracking a medical device and generating an image in real time from the same set of radial data. A multi-mode medical device system having tracking, imaging, and visualizing capabilities is coupled to an MR scanner and multiple-echo VIPR acquisition sequence is applied to simultaneously provide conventional real-time imaging of the target region using an external coil, 3D tip-tracking information, and a localized higher-quality image showing the region surrounding the medical device using an internal multi-mode coil.

System and method for simultaneous 3DPR device tracking and imaging under MR-guidance for therapeutic endovascular interventions

A method for producing an image of a subject with a magnetic resonance imaging (MRI) system is provided. Image data is acquired at a sequence of multiple echo times occurring within two or more repetition times (TRs). Odd-numbered echoes are sampled during odd-numbered TRs, and even-numbered echoes are sampled during even-numbered TRs. Images are reconstructed and used to calculate the respective signal contributions of two or more chemical species using, for example, an IDEAL separation technique. The respective signal contributions are then used to produce images that depicts substantially only one of the chemical species. For example, separated water and fat images may be produced.

Growing community of inventors

Madison, WI, United States of America

Ethan K Brodsky