Zobrazeno 1 - 10 of 27 pro vyhledávání: '"Subhendra N. Sarkar"'
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Akademický článek
Utilizing Fast Spin Echo MRI to Reduce Image Artifacts and Improve Implant/Tissue Interface Detection in Refractory Parkinson’s Patients with Deep Brain Stimulators
Autor: Subhendra N. Sarkar, Pooja R. Sarkar, Efstathios Papavassiliou, Rafael R. Rojas
Publikováno v: Parkinson's Disease, Vol 2014 (2014)
Introduction. In medically refractory Parkinson’s disease (PD) deep-brain stimulation (DBS) is an effective therapeutic tool. Postimplantation MRI is important in assessing tissue damage and DBS lead placement accuracy. We wanted to identify which
Externí odkaz: https://doaj.org/article/b351e0617f06474ab3b1e1a24d4ec5ef
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2
Mapping gadolinium contrast in a complex ionic and photosynthesis environment of pineapple by near-infrared and X-ray imaging
Autor: Amina Shahbaz, Aldona Gjoni, Zoya Vinokur, Subhendra N. Sarkar, Chen Xu, Tetiana Soloviova
Publikováno v: Spectroscopy Letters. 53:505-511
This work explores the diffusivity of a lanthanide complex, Eovist (Gadolinium-Ethoxy Benzyl Diethylenetriamine pentaacetate) that is stable in neutral media but is not in acidic environment. In th...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::46f2c847eaba77abd6e4facf35b690c8
https://doi.org/10.1080/00387010.2020.1786405
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A subjective and objective comparison of tissue contrast and imaging artifacts present in routine spin echoes and in iterative decomposition of asymmetric spin echoes for soft tissue neck MRI
Autor: Emelia A. Johnson, Subhendra N. Sarkar, Sue Nagle, Gul Moonis, David B. Hackney, Behroze Vachha, Robert L. Greenman
Publikováno v: Eur J Radiol
Objective FSE sequences play key roles in neck MRI despite the susceptibility issues in neck region. Iterative decomposition of asymmetric echoes (IDEAL, GE) is a promising method that separates fat and water images resulting in high SNR and improved
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5313672360a700924cf8ecdce99e05f3
https://doi.org/10.1016/j.ejrad.2018.03.016
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Microvascular and large vein abnormalities in young patients after mild head trauma and associated fatigue: A brain SPECT evaluation and posture dependence modeling
Autor: Subhendra N. Sarkar, Tiffany Crider, John Claude Krusz, Derrick Eng, Janet Cordero, Pooja R. Sarkar
Publikováno v: Clinical neurology and neurosurgery. 170
Objective MRI and CT scans are usually normal in mild traumatic brain injury (mTBI) although 15–20% of such patients suffer for months from fatigue, headache, anxiety, sleep and other disorders. mTBI is suspected to be a cerebrovascular injury, sim
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2bc52d6359e5752204d3563413821bc
https://pubmed.ncbi.nlm.nih.gov/29800829
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Subthalamic Nuclear Tissue Contrast in Inversion Recovery MRI Decreases with Age in Medically Refractory Parkinson's Disease
Autor: Subhendra N. Sarkar, Pooja R. Sarkar, Efstathios Papavassiliou
Publikováno v: Journal of Neuroimaging. 25:303-306
BACKGROUND AND PURPOSE MRI appearance of subthalamic nucleus (STN) boundaries in Parkinson's patients is often unreliable and not well understood. An objective comparison between FSE T2 and inversion recovery (FSTIR) sequences for stereotactic placem
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cc57985dff1c9af4798ccedaeab68a5d
https://doi.org/10.1111/jon.12111
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8
Three-dimensional brain MRI for DBS patients within ultra-low radiofrequency power limits
Autor: Efstathios Papavassiliou, Ananth J. Madhuranthakam, David C. Alsop, Susan La Ruche, Subhendra N. Sarkar, Reed F. Busse, Ludy C. Shih, David B. Hackney, Rafeeque A. Bhadelia
Publikováno v: Movement Disorders. 29:546-549
Background: For patients with deep brain stimulators (DBS), local absorbed radiofrequency (RF) power is unknown and is much higher than what the system estimates. We developed a comprehensive, highquality brain magnetic resonance imaging (MRI) protoc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::466ab6eb76e20db5248782d9c5706a68
https://doi.org/10.1002/mds.25808
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9
Quantifying Cerebellum Grey Matter and White Matter Perfusion Using Pulsed Arterial Spin Labeling
Autor: Xiufeng Li, David E. Purdy, Richard W. Briggs, Subhendra N. Sarkar
Publikováno v: BioMed Research International
BioMed Research International, Vol 2014 (2014)
To facilitate quantification of cerebellum cerebral blood flow (CBF), studies were performed to systematically optimize arterial spin labeling (ASL) parameters for measuring cerebellum perfusion, segment cerebellum to obtain separate CBF values for g
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a40035422bf7ce91a2d3721f419af5e
https://doi.org/10.1155/2014/108691
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10
Improved quantification of brain perfusion using FAIR with active suppression of superior tagging (FAIR ASST)
Autor: Richard W. Briggs, Robert W. Haley, Subhendra N. Sarkar, Xiufeng Li, David E. Purdy
Publikováno v: Journal of Magnetic Resonance Imaging. 34:1037-1044
Purpose: To address two problems for perfusion studies in the middle or inferior brain regions: (1) to reduce venous artifacts due to the intrinsic superior labeling of FAIR; (2) to alleviate the discrepancy of the existence of both superior and infe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb9a2af5cc52744ff2b106e7050ee933
https://doi.org/10.1002/jmri.22734
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