Search Results - "Sappo, Charlotte"

Dual-Tuned Lattice Balun for Multi-Nuclear MRI and MRS by Zhu, Yue, Sappo, Charlotte R., Grissom, William A., Gore, John C., Yan, Xinqiang

“…Balun or trap circuits are critical components for suppressing common-mode currents flowing on the outer conductors of coaxial cables in RF coil systems for…”
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A portable scanner for magnetic resonance imaging of the brain by Cooley, Clarissa Z., McDaniel, Patrick C., Stockmann, Jason P., Srinivas, Sai Abitha, Cauley, Stephen F., Śliwiak, Monika, Sappo, Charlotte R., Vaughn, Christopher F., Guerin, Bastien, Rosen, Matthew S., Lev, Michael H., Wald, Lawrence L.

“…Access to scanners for magnetic resonance imaging (MRI) is typically limited by cost and by infrastructure requirements. Here, we report the design and testing…”
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On the design and manufacturing of miniaturized microstripline power splitters for driving multicoil transmit arrays with arbitrary ratios at 7 T by Sappo, Charlotte R., Gallego, Gabriela L., Grissom, William A., Yan, Xinqiang

“…The purpose of the current study was to implement unequal microstrip power splitters for parallel transmission at 7 T that are optimized for size and loss and…”
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External Dynamic InTerference Estimation and Removal (EDITER) for low field MRI by Srinivas, Sai Abitha, Cauley, Stephen F., Stockmann, Jason P., Sappo, Charlotte R., Vaughn, Christopher E., Wald, Lawrence L., Grissom, William A., Cooley, Clarissa Z.

“…Purpose Point‐of‐care MRI requires operation outside of Faraday shielded rooms normally used to block image‐degrading electromagnetic interference (EMI). To…”
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On the Design and Manufacturing of Miniaturized Microstripline Power Splitters for Driving Multi-Coil Transmit Arrays with Arbitrary Ratios at 7 Tesla by Sappo, Charlotte R, Gallego, Gabriela L, Grissom, William A, Yan, Xinqiang

“…This work describes a universal method for creating microstripline Wilkinson power splitters that have been optimized for size and loss. As the design can be…”
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Design of Sparse Halbach Magnet Arrays for Portable MRI Using a Genetic Algorithm by Cooley, Clarissa Zimmerman, Haskell, Melissa W., Cauley, Stephen F., Sappo, Charlotte, Lapierre, Cristen D., Ha, Christopher G., Stockmann, Jason P., Wald, Lawrence L.

“…Permanent magnet arrays offer several attributes attractive for the development of a low-cost portable MRI scanner for brain imaging. They offer the potential…”
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A 31‐channel integrated “AC/DC” B0 shim and radiofrequency receive array coil for improved 7T MRI by Stockmann, Jason P., Arango, Nicolas S., Witzel, Thomas, Mareyam, Azma, Sappo, Charlotte, Zhou, Jiazheng, Jenkins, Lucas, Craven‐Brightman, Lincoln, Milshteyn, Eugene, Davids, Mathias, Hoge, W. Scott, Sliwiak, Monika, Nasr, Shahin, Keil, Boris, Adalsteinsson, Elfar, Guerin, Bastien, White, Jacob K., Setsompop, Kawin, Polimeni, Jonathan R., Wald, Lawrence L.

“…Purpose To test an integrated “AC/DC” array approach at 7T, where B0 inhomogeneity poses an obstacle for functional imaging, diffusion‐weighted MRI, MR…”
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Paramagnetic salt and agarose recipes for phantoms with desired T1 and T2 values for low‐field MRI by Jordanova, Kalina V., Fraenza, Carla C., Martin, Michele N., Tian, Ye, Shen, Sheng, Vaughn, Christopher E., Walsh, Kevin J., Walsh, Casey, Sappo, Charlotte R., Ogier, Stephen E., Poorman, Megan E., Teixeira, Rui P., Grissom, William A., Nayak, Krishna S., Rosen, Matthew S., Webb, Andrew G., Greenbaum, Steven G., Witherspoon, Velencia J., Keenan, Kathryn E.

“…Tissue‐mimicking reference phantoms are indispensable for the development and optimization of magnetic resonance (MR) measurement sequences. Phantoms have…”
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A 31-channel integrated “AC/DC” B0 shim and RF receive array coil for improved 7 Tesla MRI by Stockmann, Jason P., Arango, Nicolas S., Witzel, Thomas, Mareyam, Azma, Sappo, Charlotte, Zhou, Jiazheng, Jenkins, Lucas, Craven-Brightman, Lincoln, Milshteyn, Eugene, Davids, Mathias, Hoge, W. Scott, Sliwiak, Monika, Nasr, Shahin, Keil, Boris, Adalsteinsson, Elfar, Guerin, Bastien, White, Jacob K., Setsompop, Kawin, Polimeni, Jonathan R., Wald, Lawrence L.

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A 31-channel integrated "AC/DC" B 0 shim and radiofrequency receive array coil for improved 7T MRI by Stockmann, Jason P, Arango, Nicolas S, Witzel, Thomas, Mareyam, Azma, Sappo, Charlotte, Zhou, Jiazheng, Jenkins, Lucas, Craven-Brightman, Lincoln, Milshteyn, Eugene, Davids, Mathias, Hoge, W Scott, Sliwiak, Monika, Nasr, Shahin, Keil, Boris, Adalsteinsson, Elfar, Guerin, Bastien, White, Jacob K, Setsompop, Kawin, Polimeni, Jonathan R, Wald, Lawrence L

“…To test an integrated "AC/DC" array approach at 7T, where B inhomogeneity poses an obstacle for functional imaging, diffusion-weighted MRI, MR spectroscopy,…”
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A portable scanner for brain MRI by Cooley, Clarissa Z., McDaniel, Patrick C., Stockmann, Jason P., Srinivas, Sai Abitha, Cauley, Stephen F., Śliwiak, Monika, Sappo, Charlotte R., Vaughn, Christopher F., Guerin, Bastien, Rosen, Matthew S., Lev, Michael H., Wald, Lawrence L.

“…Access to scanners for magnetic resonance imaging (MRI) is typically limited by cost and by infrastructure requirements. Here, we report the design and testing…”
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A Minibatch Alternating Projections Algorithm for Robust and Efficient Magnitude Least-Squares RF Pulse Design in MRI by Martin, Jonathan B, Sappo, Charlotte R, Hardy, Benjamin M, Grissom, William A

“…A magnitude-least-squares radiofrequency pulse design algorithm is reported which uses interleaved exact and stochastically-generated inexact updates to escape…”
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External Dynamic InTerference Estimation and Removal (EDITER) for low field MRI by Srinivas, Sai Abitha, Cauley, Stephen F, Stockmann, Jason P, Sappo, Charlotte R, Vaughn, Christopher E, Wald, Lawrence L, Grissom, William A, Cooley, Clarissa Z

“…Purpose: Point-of-care MRI requires operation outside of a faraday shielded room normally used to block image-degrading electromagnetic Interference (EMI). To…”
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A Portable Brain MRI Scanner for Underserved Settings and Point-Of-Care Imaging by Cooley, Clarissa Z, McDaniel, Patrick C, Stockmann, Jason P, Srinivas, Sai Abitha, Cauley, Stephen, Sliwiak, Monika, Sappo, Charlotte R, Vaughn, Christopher F, Guerin, Bastien, Rosen, Matthew S, Lev, Michael H, Wald, Lawrence L

“…Access to and availability of MRI scanners is typically limited by their cost, siting and infrastructure requirements. This precludes MRI diagnostics, the…”
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