The Brigham and Women's Hospital, Inc.

General Electric Company

University of Georgia Research Foundation Inc

Cincinnati Children's Hospital Medical Center

The Henry M. Jackson Foundation for the Advancement of Military Medicine Inc.

Massachusetts General Hospital Corporation

Mirtle Medical, LLC

Ehud J Schmidt

Charles L Dumoulin

Vincent B Ho

Junichi Tokuda

Kemal Tuncali

Ravi Teja Seethamraju

Jay M Ward

Tsz Ho Tse

Qun Wang

Maggie M Fung

James K Robertson

Clare M Tempany

Ronald D Watkins

Tsz-ho Tse

Wei Wang

HuaLei Zhang

Bill Bartula

Rafael Diana

Godtfred Holmvang

The present disclosure is directed to systems and methods for generating images using short tau inversion recovery, ultrashort echo time (STIR-UTE) MRI sequences. The STIR-UTE MRI sequences can be used to generate images that can differentiate between regions that are at temperatures that are either lethal or non-lethal to cell life. Thus, these sequences can be beneficial for implementations such as in monitoring cryoablation procedures.

System for and method of temperature-sensitive frozen tissue imaging for cryoablation monitoring

An apparatus and method for an electrocardiogram (ECG) cable suitable for use inside a Magnetic Resonance (MR) scanner during a Magnetic Resonance Imaging (MRI) operation. In particular, the present invention relates to a patient safe (MRI-conditional) 12-lead ECG cable capable of use inside an MR scanner during an MRI scan. The ECG cable does not heat up to a degree that would burn a patient undergoing an MRI scan, but also enables the conventional 12-lead ECG electrode placement required for diagnostic monitoring of the patient. Specifically, the ECG cable electrodes can be placed on a patient in the traditional configuration as 12-lead ECG cable designed for use outside of an MR scanner and take diagnostic level readings, during operation of an MR device or system. Additionally, the cable provides a continuous shield which maintains zero emissions while satisfying defibrillation requirements.

MRI-compatible 12-lead ECG cable

A system and method for monitoring patient physiological information during an MRI scan sequence is provided. The system includes a monitoring device configured to sense physiological information from a patient. The physiological information may include electrocardiograph signals, electro-anatomical mapping signals, or other information concerning a physiological condition of the patient. The system further includes a control circuit connected to receive signals from the monitoring device and to coordinate output of the electrode during an MRI scan.

System and method for acquiring patient physiological information during an MRI scan

Systems and methods for estimating time-dependent voltages that are induced in electrophysiological monitoring systems by magnetic field gradients generated during a magnetic resonance imaging ('MRI') scan are provided. The gradient-induced voltages are subsequently removed from signals acquired with the electrophysiological monitoring system during an MRI scan. As an example, the electrophysiological monitoring system can include an electrocardiography ('ECG') system, an electroencephalography (&#x201c;EEG&#x201d;) system, an electromyography (&#x201c;EMG&#x201d;) system, a voltage device tracking (&#x201c;VDT&#x201d;) system, and so on. The gradient-induced voltages are estimated using a two-step procedure in which a learning algorithm is used to determine fitting parameters to be used in a model of the gradient-induced voltages. The fitting parameters are then used together with the model to extract the gradient-induced voltages from signals acquired during an MRI scan. The gradient-induced voltages can then be removed from the acquired signals.

Systems and methods for estimating and removing magnetic resonance imaging gradient field-induced voltages from electrophysiology signals

A system and method of use for a probe is disclosed that includes a self-expanding housing constructed to permit fluid flow therethrough and constructed for insertion into a subject to be imaged. A plurality of RF coils is attached to the housing to acquire MR data.

Self-expanding multi-channel RF receiver coil for high resolution intra-cardiac MRI and method of use

A catheter device for deploying a local magnetic resonance imaging (MRI) coil is provided. The catheter device includes an outer catheter shaft having a lumen extending from a proximal end to a distal end and an inner catheter shaft having a lumen extending from a proximal end to a distal end. The outer and inner catheter shafts are movably engaged such that one can move relative to the other. A plurality of non-metallic filaments are coupled on one end to the outer catheter shaft and coupled on another end to the inner catheter shaft. The plurality of non-metallic filaments are intertwined to form a braid, to which a local MRI coil is coupled. The local MRI coil is configured to have a circular shape when the braid is in a deployed position. Additionally, motion tracking coils can be coupled to the braid to provide motion tracking information for motion compensation.

Catheter device with local magnetic resonance imaging coil and methods for use thereof

A system and method for MR imaging includes a computer programmed to determine first and second view-ordering sequences. The first and second view-ordering sequences comprise values corresponding to respective views of first and second k-space data sets, respectively, wherein the values corresponding to a central view of each the first and second k-space data sets are positioned such that acquisition of k-space data in each central view is acquired from a first and second anatomical region, respectively, as a contrast agent passes therethrough. The positions of the values corresponding to the central views of the first and second k-space data sets within the respective sequences are different. The computer is further programmed to acquire MR data according to the first and second view-ordering sequences over a series of cardiac cycles to fill data in the first and second k-space data sets, respectively.

Method and apparatus for contrast inflow dynamic MR angiography

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Newton, MA, United States of America

Ehud J Schmidt