Search Results - "St Lawrence, Keith S"

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  1. 1

    caliPER: A software for blood-free parametric Patlak mapping using PET/MRI input function by Dassanayake, Praveen, Cui, Lumeng, Finger, Elizabeth, Kewin, Matthew, Hadaway, Jennifer, Soddu, Andrea, Jakoby, Bjoern, Zuehlsdorf, Sven, Lawrence, Keith S St, Moran, Gerald, Anazodo, Udunna C

    Published in NeuroImage (Orlando, Fla.) (01-08-2022)
    “…•caliPER is an adaptable image processing software for extracting image-derived input functions and generating parametric maps of irreversible PET tracer…”
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    A two-stage approach for measuring vascular water exchange and arterial transit time by diffusion-weighted perfusion MRI by St. Lawrence, Keith S., Owen, Daron, Wang, Danny J. J.

    Published in Magnetic resonance in medicine (01-05-2012)
    “…Changes in the exchange rate of water across the blood‐brain barrier, denoted kw, may indicate blood‐brain barrier dysfunction before the leakage of…”
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  3. 3

    Turbo-FLASH based arterial spin labeled perfusion MRI at 7 T by Zuo, Zhentao, Wang, Rui, Zhuo, Yan, Xue, Rong, St Lawrence, Keith S, Wang, Danny J J

    Published in PloS one (20-06-2013)
    “…Motivations of arterial spin labeling (ASL) at ultrahigh magnetic fields include prolonged blood T1 and greater signal-to-noise ratio (SNR). However, increased…”
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  4. 4

    Water Exchange across the Blood-Brain Barrier in Obstructive Sleep Apnea: An MRI Diffusion-Weighted Pseudo-Continuous Arterial Spin Labeling Study by Palomares, Jose A., Tummala, Sudhakar, Wang, Danny J.J., Park, Bumhee, Woo, Mary A., Kang, Daniel W., Lawrence, Keith S. St, Harper, Ronald M., Kumar, Rajesh

    Published in Journal of neuroimaging (01-11-2015)
    “…ABSTRACT BACKGROUND AND PURPOSE Obstructive sleep apnea (OSA) subjects show brain injury in sites that control autonomic, cognitive, and mood functions that…”
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  5. 5

    Using simultaneous PET/MRI to compare the accuracy of diagnosing frontotemporal dementia by arterial spin labelling MRI and FDG-PET by Anazodo, Udunna C., Finger, Elizabeth, Kwan, Benjamin Yin Ming, Pavlosky, William, Warrington, James Claude, Günther, Matthias, Prato, Frank S., Thiessen, Jonathan D., St. Lawrence, Keith S.

    Published in NeuroImage clinical (01-01-2018)
    “…The clinical utility of FDG-PET in diagnosing frontotemporal dementia (FTD) has been well demonstrated over the past decades. On the contrary, the diagnostic…”
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    Impaired Cerebrovascular Function in Coronary Artery Disease Patients and Recovery Following Cardiac Rehabilitation by Anazodo, Udunna C, Shoemaker, J K, Suskin, Neville, Ssali, Tracy, Wang, Danny J J, St Lawrence, Keith S

    Published in Frontiers in aging neuroscience (05-01-2016)
    “…Coronary artery disease (CAD) poses a risk to the cerebrovascular function of older adults and has been linked to impaired cognitive abilities. Using magnetic…”
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  7. 7

    When Perfusion Meets Diffusion: in vivo Measurement of Water Permeability in Human Brain by Wang, Jiongjiong, Fernández-Seara, María A, Wang, Sumei, Lawrence, Keith S St

    “…Quantification of water permeability can improve the accuracy of perfusion measurements obtained with arterial spin labeling (ASL) methods, and may provide…”
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  8. 8

    Noninvasive MRI Measures of Microstructural and Cerebrovascular Changes During Normal Swine Brain Development by Winter, Jeff D, Dorner, Stephanie, Lukovic, Jelena, Fisher, Joseph A, St. Lawrence, Keith S, Kassner, Andrea

    Published in Pediatric research (01-05-2011)
    “…The swine brain is emerging as a potentially valuable translational animal model of neurodevelopment and offers the ability to assess the impact of…”
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  9. 9

    Validation study of a pulsed arterial spin labeling technique by comparison to perfusion computed tomography by Koziak, Adrian M, Winter, Jeff, Lee, Ting-Yim, Thompson, R. Terry, St. Lawrence, Keith S

    Published in Magnetic resonance imaging (01-05-2008)
    “…Abstract Abnormalities in cerebral blood flow (CBF) are believed to play a significant role in the development of major neonatal neuropathologies. One approach…”
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  10. 10

    Using perfusion MRI to measure the dynamic changes in neural activation associated with tonic muscular pain by Owen, Daron G., Clarke, Collin F., Ganapathy, Sugantha, Prato, Frank S., St. Lawrence, Keith S.

    Published in Pain (Amsterdam) (01-03-2010)
    “…Knowledge regarding neural pain processing is primarily the result of studies involving models of brief cutaneous pain; however, clinical pain generally…”
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    Quantification of renal perfusion: Comparison of arterial spin labeling and dynamic contrast-enhanced MRI by Winter, Jeff D., St. Lawrence, Keith S., Cheng, Hai-Ling Margaret

    Published in Journal of magnetic resonance imaging (01-09-2011)
    “…Purpose: To provide the first comparison of absolute renal perfusion obtained by arterial spin labeling (ASL) and separable compartment modeling of dynamic…”
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  12. 12

    Feasibility of simultaneous whole-brain imaging on an integrated PET-MRI system using an enhanced 2-point Dixon attenuation correction method by Anazodo, Udunna C, Thiessen, Jonathan D, Ssali, Tracy, Mandel, Jonathan, Günther, Matthias, Butler, John, Pavlosky, William, Prato, Frank S, Thompson, R Terry, St Lawrence, Keith S

    Published in Frontiers in neuroscience (05-01-2015)
    “…To evaluate a potential approach for improved attenuation correction (AC) of PET in simultaneous PET and MRI brain imaging, a straightforward approach that…”
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  13. 13

    Measuring the neural response to continuous intramuscular infusion of hypertonic saline by perfusion MRI by Owen, Daron G., Clarke, Collin F., Bureau, Yves, Ganapathy, Sugantha, Prato, Frank. S., St. Lawrence, Keith S.

    Published in Journal of magnetic resonance imaging (01-03-2012)
    “…Purpose: To determine the extent to which arterial spin labeling (ASL), a functional magnetic resonance imaging technique that directly measures cerebral blood…”
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  14. 14

    An adiabatic approximation to the tissue homogeneity model for water exchange in the brain: I. Theoretical derivation by St Lawrence, K S, Lee, T Y

    “…Using the adiabatic approximation, which assumes that the tracer concentration in parenchymal tissue changes slowly relative to that in capillaries, we derived…”
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    Quantification of blood–brain barrier water exchange and permeability with multidelay diffusion‐weighted pseudo‐continuous arterial spin labeling by Shao, Xingfeng, Zhao, Chenyang, Shou, Qinyang, St Lawrence, Keith S., Wang, Danny J. J.

    Published in Magnetic resonance in medicine (01-05-2023)
    “…Purpose To present a pulse sequence and mathematical models for quantification of blood–brain barrier water exchange and permeability. Methods…”
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    An adiabatic approximation to the tissue homogeneity model for water exchange in the brain: II. Experimental validation by St Lawrence, K S, Lee, T Y

    “…A frequently reported limitation to using water as a tracer for measuring CBF has been the dependence of the CBF estimate on the experimental time (referred to…”
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  17. 17

    A model of blood-brain barrier permeability to water: Accounting for blood inflow and longitudinal relaxation effects by Barbier, Emmanuel L., Lawrence, Keith S. St, Grillon, Emmanuelle, Koretsky, Alan P., Décorps, Michel

    Published in Magnetic resonance in medicine (01-06-2002)
    “…A noninvasive technique for measuring the permeability of the blood–brain barrier (BBB) to water could help to evaluate changes in the functional integrity of…”
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  18. 18

    Quantification issues in arterial spin labeling perfusion magnetic resonance imaging by Wu, Wen-Chau, St Lawrence, Keith S, Licht, Daniel J, Wang, Danny J J

    Published in Topics in magnetic resonance imaging (01-04-2010)
    “…Arterial spin labeling (ASL) perfusion magnetic resonance imaging has gained wide acceptance for its value in clinical and neuroscience applications during…”
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