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111 Results for 'MRI'
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Technology
Parallel Magnetic Resonance Imaging Method Using a Radial Acquisition Trajectory
In magnetic resonance systems, individual phased-array coils each sense a signal from a different part of the body. A composite image is then formed using an algorithm. Although parallel imaging can b...
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Arjun Arunachalam, Alexey Samsonov, Walter Block | P05361US
Technology
Characterization of Receiver Demodulation for Correcting Off-Axis MR Imaging Degradation
Non-Cartesian imaging in magnetic resonance imaging (MRI), often accomplished by radial or spiral data acquisition, permits significant acceleration of the MRI process. However, non-Cartesian imaging ...
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Walter Block, Youngkyoo Jung, Yogesh Jashnani | P06440US
Technology
Real-Time Phase Error Correction for Off-Axis MRI Systems to Improve Efficiency and Image Quality
Magnetic resonance imaging (MRI) is a diagnostic imaging technique that is especially effective for soft tissues such as the brain or other organs. To produce an MR image the patient is subjected to...
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Walter Block, Youngkyoo Jung, Yogesh Jashnani | P06101US
Technology
Method for Improved Efficiency and Image Quality of Parallel MRI using Radial Acquisition Trajectory
Magnetic resonance imaging (MRI) is a diagnostic imaging technique that is especially effective for soft tissues such as the brain or other organs. To produce an MR image the patient is subjected to...
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Alexey Samsonov, Arjun Arunachalam, Walter Block | P05348US
Technology
Magnetic Resonance Imaging of Diffusion and T2 Using Multi-Echo Projection Acquisition
Magnetic resonance imaging (MRI) systems apply a magnetic field to excite the proton nuclei in human tissue, which then emit a nuclear magnetic resonance (NMR) signal. This signal is received by the...
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Sean Fain, Walter Block, James Holmes, Rafael O'Halloran | P07208US
Technology
Highly Constrained Backprojected Reconstruction (HYPR) for Magnetic Resonance Images
Magnetic resonance imaging (MRI) is a medical imaging technique that measures the nuclear magnetic resonance (NMR) to image internal parts of the body. One method used to reconstruct images from NMR...
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Charles Mistretta | P05436US
Technology
Diffusion Tensor Imaging Using Highly Constrained Image Reconstruction Method
Magnetic resonance imaging (MRI) is a medical imaging technique that takes measurements, or “views,” of a subject’s nuclear magnetic resonance (NMR) to form images of internal structures. Diff...
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Charles Mistretta, Andrew Alexander | P06144US
Technology
Image Reconstruction Method for Functional Magnetic Resonance Imaging
Magnetic resonance imaging (MRI) is a medical imaging technique that takes measurements, or “views,” of a subject’s nuclear magnetic resonance (NMR) to form images of internal structures. Func...
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Charles Mistretta, Walter Block | P06143US
Technology
Highly Constrained Image Reconstruction for Magnetic Resonance Spectroscopy
Magnetic resonance spectroscopy (MRS) is a technique that measures a subject’s nuclear magnetic resonance (NMR) to produce spectra of its tissue components. In medical diagnosis and treatment, it ...
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Charles Mistretta, Scott Reeder, John Perry, Oliver Wieben | P06087US
Technology
Image Reconstruction Method for Motion Encoded Magnetic Resonance Images
Magnetic resonance imaging (MRI) is a medical imaging technique that takes measurements, or “views,” of a subject’s nuclear magnetic resonance (NMR) to form images of internal structures. The ...
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Charles Mistretta, Oliver Wieben, Kevin Johnson, Julia Velikina | P06241US
Technology
Improved MRI Coil Design for a Breast Biopsy Device
X-ray mammography is currently the most popular method of detecting breast cancer. However, X-ray mammography requires painful breast compression and is not sensitive enough to detect some early-stage...
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Sean Fain, Krishna Kurpad, Xu Zhai | P06382US