Search Results - "Scott, Greig"

A Semi-Blind Calibration and Compensation Method for Dynamic Range Recovery of Low-Power Pre-Amplifiers in MRI Receive Chains by Vassos, Christopher, Robb, Fraser, Vasanawala, Shreyas, Pauly, John, Scott, Greig

“…To enable wireless MRI receive arrays, per-channel power consumption must be reduced by a significant factor. To address this, a low-power SiGe alternative to…”
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Screen-printed flexible MRI receive coils by Corea, Joseph R., Flynn, Anita M., Lechêne, Balthazar, Scott, Greig, Reed, Galen D., Shin, Peter J., Lustig, Michael, Arias, Ana C.

“…Magnetic resonance imaging is an inherently signal-to-noise-starved technique that limits the spatial resolution, diagnostic image quality and results in…”
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Thermo‐acoustic ultrasound for noninvasive temperature monitoring at lead tips during MRI by Dixit, Neerav, Pauly, John M., Scott, Greig C.

“…Purpose We explore the use of thermo‐acoustic ultrasound (TAUS) to monitor temperature at the tips of conductive device leads during MRI. Theory In TAUS, rapid…”
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An MRI Compatible RF MEMs Controlled Wireless Power Transfer System by Byron, Kelly, Winkler, Simone A., Robb, Fraser, Vasanawala, Shreyas, Pauly, John, Scott, Greig

“…In magnetic resonance imaging (MRI), wearable wireless receive coil arrays are a key technology goal. An MRI compatible wireless power transfer (WPT) system…”
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Safe guidewire visualization using the modes of a PTx transmit array MR system by Godinez, Felipe, Scott, Greig, Padormo, Francesco, Hajnal, Joseph V., Malik, Shaihan J.

“…Purpose MRI‐guided cardiovascular intervention using standard metal guidewires can produce focal tissue heating caused by induced radiofrequency guidewire…”
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Biopsy marker localization with thermo‐acoustic ultrasound for lumpectomy guidance by Dixit, Neerav, Daniel, Bruce L., Hargreaves, Brian A., Pauly, John M., Scott, Greig C.

“…Purpose Almost one in four lumpectomies fails to fully remove cancerous tissue from the breast, requiring reoperation. This high failure rate suggests that…”
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Thermo-Acoustic Ultrasound for Detection of RF-Induced Device Lead Heating in MRI by Dixit, Neerav, Stang, Pascal P., Pauly, John M., Scott, Greig C.

“…Patients who have implanted medical devices with long conductive leads are often restricted from receiving MRI scans due to the danger of RF-induced heating…”
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Evaluation of a Flexible 12-Channel Screen-printed Pediatric MRI Coil by Winkler, Simone Angela, Corea, Joseph, Lechêne, Balthazar, O'Brien, Kendall, Bonanni, John Ross, Chaudhari, Akshay, Alley, Marcus, Taviani, Valentina, Grafendorfer, Thomas, Robb, Fraser, Scott, Greig, Pauly, John, Lustig, Michael, Arias, Ana Claudia, Vasanawala, Shreyas

“…Background Screen-printed MRI coil technology may reduce the need for bulky and heavy housing of coil electronics and may provide a better fit to patient…”
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Depletion-Mode GaN HEMT Q-Spoil Switches for MRI Coils by Lu, Jonathan Y., Grafendorfer, Thomas, Zhang, Tao, Vasanawala, Shreyas, Robb, Fraser, Pauly, John M., Scott, Greig C.

“…Q-spoiling is the process of decoupling an MRI receive coil to protect the equipment and patient. Conventionally, Q-spoiling is performed using a PIN diode…”
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A Millimeter-Wave Digital Link for Wireless MRI by Aggarwal, Kamal, Joshi, Kiran R., Rajavi, Yashar, Taghivand, Mazhareddin, Pauly, John M., Poon, Ada S. Y., Scott, Greig

“…A millimeter (mm) wave radio is presented in this work to support wireless MRI data transmission. High path loss and availability of wide bandwidth make…”
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Wireless Resonant Circuits Printed Using Aerosol Jet Deposition for MRI Catheter Tracking by Jordan, Caroline D., Thorne, Bradford R. H., Wadhwa, Arjun, Losey, Aaron D., Ozhinsky, Eugene, Kondapavulur, Sravani, Fratello, Vincent, Moore, Teri, Stillson, Carol, Yee, Colin, Watkins, Ronald D., Scott, Greig C., Martin, Alastair J., Zhang, Xiaoliang, Wilson, Mark W., Hetts, Steven W.

“…Interventional magnetic resonance imaging (MRI) could allow for diagnosis and immediate treatment of ischemic stroke; however, such endovascular catheter-based…”
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A semiflexible 64-channel receive-only phased array for pediatric body MRI at 3T by Zhang, Tao, Grafendorfer, Thomas, Cheng, Joseph Y., Ning, Peigang, Rainey, Bob, Giancola, Mark, Ortman, Sarah, Robb, Fraser J., Calderon, Paul D., Hargreaves, Brian A., Lustig, Michael, Scott, Greig C., Pauly, John M., Vasanawala, Shreyas S.

“…Purpose To design, construct, and validate a semiflexible 64‐channel receive‐only phased array for pediatric body MRI at 3T. Methods A 64‐channel receive‐only…”
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Extrasynaptic Glycine Receptors of Rodent Dorsal Raphe Serotonergic Neurons: A Sensitive Target for Ethanol by MAGUIRE, Edward P, MITCHELL, Elizabeth A, GREIG, Scott J, CORTEEN, Nicole, BALFOUR, David J. K, SWINNY, Jerome D, LAMBERT, Jeremy J, BELELLI, Delia

“…Alcohol abuse is a significant medical and social problem. Several neurotransmitter systems are implicated in ethanol's actions, with certain receptors and ion…”
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Narrowband Magnetic Particle Imaging by Goodwill, P.W., Scott, G.C., Stang, P.P., Conolly, S.M.

“…The magnetic particle imaging (MPI) method directly images the magnetization of super-paramagnetic iron oxide (SPIO) nanoparticles, which are contrast agents…”
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Optimal Broadband Noise Matching to Inductive Sensors: Application to Magnetic Particle Imaging by Zheng, Bo, Goodwill, Patrick W., Dixit, Neerav, Xiao, Di, Zhang, Wencong, Gunel, Beliz, Lu, Kuan, Scott, Greig C., Conolly, Steven M.

“…Inductive sensor-based measurement techniques are useful for a wide range of biomedical applications. However, optimizing the noise performance of these…”
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Offline impedance measurements for detection and mitigation of dangerous implant interactions: An RF safety prescreen by Ellenor, Christopher W., Stang, Pascal P., Etezadi-Amoli, Maryam, Pauly, John M., Scott, Greig C.

“…Purpose The concept of a “radiofrequency safety prescreen” is investigated, wherein dangerous interactions between radiofrequency fields used in MRI, and…”
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Ensuring safety of implanted devices under MRI using reversed RF polarization by Overall, William R., Pauly, John M., Stang, Pascal P., Scott, Greig C.

“…Patients with long‐wire medical implants are currently prevented from undergoing magnetic resonance imaging (MRI) scans due to the risk of radio frequency (RF)…”
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Frequency-Offset Cartesian Feedback for MRI Power Amplifier Linearization by Zanchi, Marta G, Stang, Pascal, Kerr, Adam, Pauly, John M, Scott, Greig C

“…High-quality magnetic resonance imaging (MRI) requires precise control of the transmit radio-frequency (RF) field. In parallel excitation applications such as…”
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Medusa: A Scalable MR Console Using USB by Stang, P. P., Conolly, S. M., Santos, J. M., Pauly, J. M., Scott, G. C.

“…Magnetic resonance imaging (MRI) pulse sequence consoles typically employ closed proprietary hardware, software, and interfaces, making difficult any…”
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Multiparametric imaging of tumor oxygenation, redox status, and anatomical structure using overhauser‐enhanced MRI–prepolarized MRI system by Ahn, Kang‐Hyun, Scott, Greig, Stang, Pascal, Conolly, Steve, Hristov, Dimitre

“…An integrated Overhauser‐enhanced MRI–Prepolarized MRI system was developed to obtain radiobiological information that could be accurately coregistered with…”
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