Search Results - "Jonathan, Sumeeth"

Volumetric MRI thermometry using a three‐dimensional stack‐of‐stars echo‐planar imaging pulse sequence by Jonathan, Sumeeth V., Grissom, William A.

“…Purpose To measure temperature over a large brain volume with fine spatiotemporal resolution. Methods A three‐dimensional stack‐of‐stars echo‐planar imaging…”
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Considerations for ultrasound exposure during transcranial MR acoustic radiation force imaging by Phipps, M. Anthony, Jonathan, Sumeeth V., Yang, Pai-Feng, Chaplin, Vandiver, Chen, Li Min, Grissom, William A., Caskey, Charles F.

“…The aim of this study was to improve the sensitivity of magnetic resonance-acoustic radiation force imaging (MR-ARFI) to minimize pressures required to…”
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Conditional Vasospasm-Free Survival Following Aneurysmal Subarachnoid Hemorrhage by Kelly, Patrick D., Yengo-Kahn, Aaron M., Tang, Alan R., Jonathan, Sumeeth V., Reynolds, Rebecca A., Ye, Fei, Zhao, Zhiguo, Froehler, Michael T., Fusco, Matthew R., Morone, Peter J., Chitale, Rohan V.

“…Background Following aneurysmal subarachnoid hemorrhage (SAH), patients are monitored closely for vasospasm in the intensive care unit. Conditional…”
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Bidirectional and state-dependent modulation of brain activity by transcranial focused ultrasound in non-human primates by Yang, Pai-Feng, Phipps, M. Anthony, Jonathan, Sumeeth, Newton, Allen T., Byun, Nellie, Gore, John C., Grissom, William A., Caskey, Charles F., Chen, Li Min

“…Transcranial focused ultrasound (FUS) stimulation under MRI guidance, coupled with functional MRI (fMRI) monitoring of effects, offers a precise, noninvasive…”
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Hyperoxemia and Cerebral Vasospasm in Aneurysmal Subarachnoid Hemorrhage by Reynolds, Rebecca A., Amin, Shaunak N., Jonathan, Sumeeth V., Tang, Alan R., Lan, Matthews, Wang, Chunxue, Bastarache, Julie A., Ware, Lorraine B., Thompson, Reid C.

“…Background Cerebral vasospasm is a major contributor to disability and mortality after aneurysmal subarachnoid hemorrhage. Oxidation of cell-free hemoglobin…”
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Impact of postoperative dexamethasone on survival, steroid dependency, and infections in newly diagnosed glioblastoma patients by Mistry, Akshitkumar M, Jonathan, Sumeeth V, Monsour, Meredith A, Mobley, Bret C, Clark, Stephen W, Moots, Paul L

“…Abstract Background We examined the effect of dexamethasone prescribed in the initial 3 postoperative weeks on survival, steroid dependency, and infection in…”
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Differential dose responses of transcranial focused ultrasound at brain regions indicate causal interactions by Yang, Pai-Feng, Phipps, M. Anthony, Newton, Allen T., Jonathan, Sumeeth, Manuel, Thomas J., Gore, John C., Grissom, William A., Caskey, Charles F., Chen, Li Min

“…We have previously shown that focused ultrasound (FUS) pulses in low pressure range exerted bidirectional and brain state-dependent neuromodulation in the…”
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RAZER: A pulse sequence for whole-brain bolus tracking at high frame rates by Jonathan, Sumeeth V., Vakil, Parmede, Jeong, Yong I., Menon, Rajiv G., Ansari, Sameer A., Carroll, Timothy J.

“…Purpose To introduce a pulse sequence that obtains whole‐brain perfusion measurements at 1.7 mm isotropic voxel resolution by dynamic susceptibility contrast…”
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Snapshot MR Technique to Measure OEF Using Rapid Frequency Mapping by Menon, Rajiv G, Walsh, Edward G, Twieg, Donald B, Cantrell, Charles G, Vakil, Parmede, Jonathan, Sumeeth V, Batjer, Hunt H, Carroll, Timothy J

“…Magnetic resonance (MR)-based oxygen extraction fraction (OEF) measurement techniques that use blood oxygen level-dependent (BOLD)-based approaches require the…”
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Considerations for precise sonication of distal cortical targets in the macaque by Manuel, Thomas J., Jonathan, Sumeeth V., Phipps, M. Anthony, Caskey, Charles F.

“…Transcranial ultrasound is a noninvasive tool for brain therapies including ablation, neuromodulation, and blood-brain barrier opening. Sonication of cortical…”
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Volumetric MRI Thermometry using a 3D Stack-of-Stars Echo-Planar Imaging Pulse Sequence by Jonathan, Sumeeth V., Grissom, William A.

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Hyperoxia and Delayed Cerebral Vasospasm in Aneurysmal Subarachnoid Hemorrhage by Reynolds, Rebecca, Amin, Shaunak, Jonathan, Sumeeth V, Tang, Alan R, Lan, Matthews, Bastarache, Julie, Ware, Lorraine, Thompson, Reid C

“…INTRODUCTION Cerebral vasospasm is a major contributor to disability and mortality after aneurysmal subarachnoid hemorrhage (aSAH). Oxidation of cell-free…”
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Advancements in MRI-Based Methods for Targeting Transcranial Focused Ultrasound by Jonathan, Sumeeth Vijay

“…The overall goal of the work described in this dissertation is the development of improved magnetic resonance imaging (MRI)-based targeting methods for…”
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A reduced aperture allows for transcranial focus localization at lower pressure by Phipps, M. Anthony, Jonathan, Sumeeth, Yang, Pai-Feng, Chen, Li Min, Grissom, William, Caskey, Charles F.

“…Localizing the focus during transcranial focused ultrasound procedures is important to ensure accurate targeting of specific brain regions and interpretation…”
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Abstract WP228: Measurement Of Oxygen Extraction Fraction (OEF) By A Novel MRI Technique by Menon, Rajiv G, Walsh, Edward G, Sutton, Bradley P, Twieg, Donald B, Cantrell, Charles G, Vakil, Parmede, Jonathan, Sumeeth V, Prabhakaran, Shyam, Carroll, Timothy J

“…Abstract only We report a novel application of an MRI technique called Parameter Assessment by Retrieval from Signal Encoding (PARSE) to measure OEF. OEF is of…”
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Increasing Radiation Force-Induced Displacement at Matched Pressure by Reducing Effective Aperture by Phipps, M. Anthony, Jonathan, Sumeeth, Yang, Pai-Feng, Chen, Li Min, Grissom, William, Caskey, Charles F.

“…Localization of the focus during transcranial focused ultrasound procedures is critical for targeting the correct region and avoiding unwanted effects…”
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