N Lenfeldt

Summary

Country: Sweden

Publications

  1. ncbi request reprint Diffusion tensor imaging and correlations to Parkinson rating scales
    Niklas Lenfeldt
    Department of Pharmacology and Clinical Neuroscience, Umea University, 901 85, Umea, Sweden
    J Neurol 260:2823-30. 2013
  2. doi request reprint Three-day CSF drainage barely reduces ventricular size in normal pressure hydrocephalus
    Niklas Lenfeldt
    Department of Clinical Neuroscience, Centre for Biomedical Engineering and Physics, Umea University, Umea, Sweden
    Neurology 79:237-42. 2012
  3. ncbi request reprint Cerebrospinal fluid pulse pressure method: a possible substitute for the examination of B waves
    Niklas Lenfeldt
    Department of Clinical Neuroscience, Umea University Hospital, University of Umea, Sweden
    J Neurosurg 101:944-50. 2004
  4. ncbi request reprint CSF pressure assessed by lumbar puncture agrees with intracranial pressure
    N Lenfeldt
    Department of Clinical Neuroscience, Umea University, S 901 85 Umea, Sweden
    Neurology 68:155-8. 2007
  5. doi request reprint Improvement after cerebrospinal fluid drainage is related to levels of N-acetyl-aspartate in idiopathic normal pressure hydrocephalus
    Niklas Lenfeldt
    Department of Clinical Neuroscience, Center for Biomedical Engineering and Physics, Umea University, Umea, Sweden
    Neurosurgery 62:135-41, discussion 141-2. 2008
  6. doi request reprint Idiopathic normal pressure hydrocephalus: increased supplementary motor activity accounts for improvement after CSF drainage
    Niklas Lenfeldt
    Department of Clinical Neuroscience, Umea University, Umea, Sweden
    Brain 131:2904-12. 2008
  7. doi request reprint Diffusion tensor imaging reveals supplementary lesions to frontal white matter in idiopathic normal pressure hydrocephalus
    Niklas Lenfeldt
    Department of Clinical Neuroscience, Umea University, Umea, Sweden
    Neurosurgery 68:1586-93; discussion 1593. 2011
  8. doi request reprint Transcranial Doppler pulsatility index: not an accurate method to assess intracranial pressure
    Anders Behrens
    Department of Clinical Neuroscience, Umea University, Umea, Sweden
    Neurosurgery 66:1050-7. 2010
  9. doi request reprint Are intracranial pressure wave amplitudes measurable through lumbar puncture?
    A Behrens
    Department of Clinical Neuroscience, Umea University, Umea, Sweden
    Acta Neurol Scand 127:233-41. 2013

Detail Information

Publications9

  1. ncbi request reprint Diffusion tensor imaging and correlations to Parkinson rating scales
    Niklas Lenfeldt
    Department of Pharmacology and Clinical Neuroscience, Umea University, 901 85, Umea, Sweden
    J Neurol 260:2823-30. 2013
    ..Motor function is not mirrored in diffusion changes, possibly due to medication. Tremor dominant PD patients show diffusion alterations in the thalamus, but the significance of this for tremor generation remains to be determined. ..
  2. doi request reprint Three-day CSF drainage barely reduces ventricular size in normal pressure hydrocephalus
    Niklas Lenfeldt
    Department of Clinical Neuroscience, Centre for Biomedical Engineering and Physics, Umea University, Umea, Sweden
    Neurology 79:237-42. 2012
    ..This study investigates the effect of 3-day ELD of 500 mL on ventricular size and clinical features in patients with idiopathic NPH...
  3. ncbi request reprint Cerebrospinal fluid pulse pressure method: a possible substitute for the examination of B waves
    Niklas Lenfeldt
    Department of Clinical Neuroscience, Umea University Hospital, University of Umea, Sweden
    J Neurosurg 101:944-50. 2004
    ..The aim of this study was to describe which physical parameters of the cerebrospinal fluid (CSF) system B-waves reflect and to find a method that could replace long-term B-wave analysis...
  4. ncbi request reprint CSF pressure assessed by lumbar puncture agrees with intracranial pressure
    N Lenfeldt
    Department of Clinical Neuroscience, Umea University, S 901 85 Umea, Sweden
    Neurology 68:155-8. 2007
    ..75 mm Hg) and a regression coefficient of 0.98. The concurrence supports the lumbar puncture as an accurate technique to determine ICP in patients with communicating CSF systems...
  5. doi request reprint Improvement after cerebrospinal fluid drainage is related to levels of N-acetyl-aspartate in idiopathic normal pressure hydrocephalus
    Niklas Lenfeldt
    Department of Clinical Neuroscience, Center for Biomedical Engineering and Physics, Umea University, Umea, Sweden
    Neurosurgery 62:135-41, discussion 141-2. 2008
    ..We evaluate whether or not proton magnetic resonance spectroscopy is useful for predicting improvement after long-term external lumbar drainage (ELD) of cerebrospinal fluid...
  6. doi request reprint Idiopathic normal pressure hydrocephalus: increased supplementary motor activity accounts for improvement after CSF drainage
    Niklas Lenfeldt
    Department of Clinical Neuroscience, Umea University, Umea, Sweden
    Brain 131:2904-12. 2008
    ....
  7. doi request reprint Diffusion tensor imaging reveals supplementary lesions to frontal white matter in idiopathic normal pressure hydrocephalus
    Niklas Lenfeldt
    Department of Clinical Neuroscience, Umea University, Umea, Sweden
    Neurosurgery 68:1586-93; discussion 1593. 2011
    ....
  8. doi request reprint Transcranial Doppler pulsatility index: not an accurate method to assess intracranial pressure
    Anders Behrens
    Department of Clinical Neuroscience, Umea University, Umea, Sweden
    Neurosurgery 66:1050-7. 2010
    ..Transcranial Doppler sonography (TCD) assessment of intracranial blood flow velocity has been suggested to accurately determine intracranial pressure (ICP)...
  9. doi request reprint Are intracranial pressure wave amplitudes measurable through lumbar puncture?
    A Behrens
    Department of Clinical Neuroscience, Umea University, Umea, Sweden
    Acta Neurol Scand 127:233-41. 2013
    ..The aim of this study was to investigate whether pulsations measured in the brain correspond to those measured in lumbar space, and subsequently whether lumbar punctures could replace invasive recordings...