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111 Results for 'MRI'
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Technology
System And Method For Control Of Hyperpolarized Gas-Phase Contamination In Spectroscopic Magnetic Resonance Imaging
A system and method is provided to acquire images of a subject having received a tissue soluble hyperpolarized gas into the airways. The method includes performing a pulse sequence including (i) for e...
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Sean Fain, Andrew Hahn, Jeffrey Kammerman | P170140US01
Technology
System And Method For Non-Invasive, Quantitative Measurement Of Blood Flow Parameters In Vascular Networks
A system and method are provided for generating time resolved series of angiographic volume data having flow information. The system and method are configured to receive angiographic volume data acqui...
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Gabriel Shaughnessy | P180127US01
Technology
Systems And Methods For Magnetic Resonance Phantoms
Embodiments of the disclosure provide a magnetic resonance (MR) phantom including a housing, a base medium disposed within the housing, and one or more compartment extending through the base medium, t...
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Alejandro Roldán-Alzate, David Rutkowski, Diego Hernando Arribas | P200228US01
Technology
System And Method For Determining Patient Parameters Using Radio Frequency Phase Increments In Magnetic Resonance Imaging
A system and method are provided for controlling a magnetic resonance imaging system to perform a gradient echo pulse sequence that includes varying a phase of an RF pulse of the gradient echo pulse s...
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Scott Reeder, Xiaoke Wang | P190216US01
Technology
System And Method For Assessment Of Neuro-Inflammation Using Magnetic Resonance Imaging (Mri)
A system and method are provided for non-invasively assessing neuro-inflammation in a subject. The method includes acquiring neurite orientation dispersion and density imaging (NODDI) data of the subj...
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John-Paul Yu | P180201US02
Technology
Dual Flow Generative Computer Architecture
A machine learning architecture employs two machine learning networks that are joined by a statistical model allowing the imposition of a predetermined statistical model family into a learning process...
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Vivek Prabhakaran, Vikas Singh, Sterling Johnson, Haoliang Sun, Ronak Mehta, Hao Zhou | P190192US01
Technology
Fat- and Iron-Corrected T1 Mapping for Diagnosing Liver Disease
Improved MRI methods are needed to diagnose nonalcoholic fatty liver disease (NAFLD), the most common cause of liver disease in the Western world. Promising studies have demonstrated the utility of Tl...
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Scott Reeder, Xiaoke Wang, Diego Hernando Arribas | P170169US01
Technology
Method for Data-Consistency Preparation and Improved Image Reconstruction
Routinely, data acquired with medical imaging systems are not consistent with a single true image of the subject. Data inconsistencies arise from various causes (beam-hardening effects, subject motion...
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Guang-Hong Chen | P170192US01
Technology
Rapid MRI Gradient Calibration Using Single-Point Imaging
In MRI, gradient distortions can cause image artifacts such as blurriness, ringing and phase error. Certain MRI techniques are more prone to the problem. In particular, gradient distortion is perhaps ...
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Alan McMillan, Hyungseok Jang | P160026US01
Technology
Post-Processing MRI Fat Suppression Method to Enhance Image Quality and Improve Medical Diagnostics
Magnetic resonance imaging (MRI) is a diagnostic imaging technique that is especially effective for soft tissues such as the brain and other organs. To produce an MR image, the patient is subjected to...
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Walter Block, Catherine Moran | P08308US
Technology
Improved Phantom for Quantitative Diffusion MRI
Among numerous magnetic resonance imaging contrast mechanisms, the insights that diffusion-weighted MRI provides into microstructural tissue changes make it an excellent biomarker for detection and ev...
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Scott Reeder, Diego Hernando Arribas, Xiaoke Wang | P150322US01
Technology
Robust Chemical Shift MRI Using Magnetization Transfer
Accurate fat-water separation is critical in diagnosing non-alcoholic fatty liver disease. Typically the separation is performed using specialized methods such as iterative decomposition with echo asy...
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Alexey Samsonov | P160247US01
Technology
Long-Lived Gadolinium-Based Agents for Tumor Imaging and Therapy
Currently, there are no long-lived CT or magnetic resonance (MR) imaging agents that successfully target tumor cells in vivo. While a variety of radiopharmaceuticals are available, these are limited b...
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Jamey Weichert, Anatoly Pinchuk, Wolfgang Tome | P160146US02
Technology
Magnetic Resonance Imaging of Metabolites
In magnetic resonance imaging (MRI), tissue is scanned using magnetic fields that excite atoms and cause them to emit signals. These nuclear magnetic resonance (NMR) signals can be processed into an i...
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Scott Reeder | P06190US
Technology
Real-Time MRI Guides Surgical Intervention and Limits Human Error
Many invasive procedures, such as neurosurgeries or breast biopsies, involve inserting a rigid device into the body. To minimize human error, technologies like MRI allow the surgeon to guide the preci...
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Walter Block, Ethan Brodsky, Miles Olsen | P150226US01
Technology
Improved Phantom for Iron and Fat Quantification MRI
The ability to quantify fat concentration in the body has become increasingly important given the rise in obesity and related comorbidities. Likewise, the ability to quantify iron concentration is imp...
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Scott Reeder, Diego Hernando Arribas, Samir Sharma | P150328US01
Technology
Controlling Motion Effects in MRI
Magnetic resonance imaging (MRI) is sensitive to patient movements due to the long scan times sometimes required. A major source of motion is breathing, which causes artifacts to appear in MR images. ...
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Kevin Johnson | P150149US01
Technology
Faster, Higher Quality Medical Imaging
Magnetic resonance imaging (MRI) and computed tomography (CT) have become invaluable tools for learning about a patient’s health. However, systems are limited by acquisition speed, which often leads...
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Alexey Samsonov, Julia Velikina | P150024US01
Technology
Faster, Distortion-Free MRI Near Metallic Implants
Surgical replacement of joints with mechanical prostheses is on the rise. Unfortunately, complications such as infection and loosening are common and often diagnosed in the late stages, compelling rep...
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Nathan Artz, Curtis Wiens | P150006US01
Technology
Semi-Automated Segmentation Improves Knee MRI
Magnetic resonance imaging (MRI) provides high-resolution visualization of soft tissues, allowing diseases to be diagnosed and tracked. In particular, MR images can be used to assess joint degeneratio...
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Kwang Won Choi, Chihwa Song, Richard Kijowski, Darryl Thelen | P140270US01
Technology
Robust Magnetic Field Map Estimation Improves MRI Fat-Water Separation
In magnetic resonance imaging (MRI), the main magnetic field is symbolized B0. Accurately estimating a B0 field map is critical to distinguishing different chemical species like water and fat. If the ...
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Scott Reeder, Nathan Artz, Samir Sharma | P130370US01
Technology
Clearer MRI Near Metallic Implants
More than a million joint replacements were performed in the Unites States in 2012 and more than four million implant surgeries are expected in 2030. Such implants pose a challenge to magnetic resonan...
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Scott Reeder, Nathan Artz, Matthew Smith | P140004US01
Technology
Improved MRI with Radio Frequency Coil Decoupling Circuit to Enhance Image Quality
Magnetic resonance imaging (MRI) is a diagnostic imaging technique that is especially effective for soft tissues such as the brain and other organs. To produce an MR image the patient is subjected t...
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Krishna Kurpad, Wonje Lee, Eddy Boskamp | P06333US
Technology
Highly Constrained Backprojected Reconstruction (HYPR) for Computed Tomography Images
Computed tomography (CT) is a medical imaging technique that takes many 2-D X-ray images to generate 3-D images. The most common method for reconstructing the final 3-D image is called the filtered b...
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Charles Mistretta | P05437US
Technology
Highly Constrained Image Reconstruction for Medical Imaging Applications
Magnetic resonance imaging (MRI) is a medical imaging technique that measures a subject’s nuclear magnetic resonance (NMR) to form images of internal structures. Computed tomography (CT) is another...
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Charles Mistretta | P06088US