The Experts below are selected from a list of 795 Experts worldwide ranked by ideXlab platform

Avneesh Chhabra - One of the best experts on this subject based on the ideXlab platform.

Martin Bendszus - One of the best experts on this subject based on the ideXlab platform.

Mirko Pham - One of the best experts on this subject based on the ideXlab platform.

  • somatotopic fascicular lesions of the brachial plexus demonstrated by high resolution magnetic resonance Neurography
    Investigative Radiology, 2017
    Co-Authors: Tim Hilgenfeld, Jennifer Kollmer, Daniel Schwarz, Sabine Heiland, Martin Bendszus, Philipp Bäumer, Johann M E Jende, Mirko Pham
    Abstract:

    ObjectivesThe aim of this study was to evaluate whether high-resolution brachial plexus (BP) magnetic resonance Neurography (MRN) is capable of (1) distinguishing patients with compressive neuropathy or noncompressive plexopathy from age- and sex-matched controls, (2) discriminating between patients

  • Diagnostic signs of motor neuropathy in MR Neurography: nerve lesions and muscle denervation.
    European radiology, 2014
    Co-Authors: Daniel Schwarz, Markus Weiler, Mirko Pham, Sabine Heiland, Martin Bendszus, Philipp Bäumer
    Abstract:

    Objective To investigate the diagnostic contribution of T2-w nerve lesions and of muscle denervation in peripheral motor neuropathies by magnetic resonance Neurography (MRN).

  • peripheral nerves and plexus imaging by mr Neurography and high resolution ultrasound
    Current Opinion in Neurology, 2014
    Co-Authors: Mirko Pham, Tobias Baumer, Martin Bendszus
    Abstract:

    Purpose of reviewThe purpose of this study is to review advances in magnetic resonance (MR)-Neurography and nerve-ultrasound for the precise visualization and localization of nerve lesions not only in nerve trauma or mass lesions, but also in entrapment-related and spontaneously occurring intrinsic

  • thoracic outlet syndrome in 3t mr Neurography fibrous bands causing discernible lesions of the lower brachial plexus
    European Radiology, 2014
    Co-Authors: Philipp Bäumer, Martin Bendszus, Henrich Kele, T Kretschmer, Ralph W Koenig, Maria Teresa Pedro, Mirko Pham
    Abstract:

    Objectives To investigate whether targeted magnetic resonance Neurography (MRN) of the brachial plexus can visualise fibrous bands compressing the brachial plexus and directly detect injury in plexus nerve fascicles.

  • Magnetic resonance Neurography for the diagnosis of extrapelvic sciatic endometriosis.
    Fertility and sterility, 2010
    Co-Authors: Mirko Pham, Claudia Sommer, Carsten Wessig, Camelia-maria Monoranu, J. Perez, Guido Stoll, Martin Bendszus
    Abstract:

    Objective To illustrate magnetic resonance Neurography findings of severe sciatic injury and muscle denervation related to deep gluteal endometriosis at the sciatic notch. Design Case report. Setting Academic teaching hospital. Patient(s) A 39-year-old woman with a 4-year history of sciatica related to the menstrual cycle. Intervention(s) Surgical exploration of the sciatic notch for diagnostic confirmation, external neurolysis of the sciatic nerve, and eventual pharmacologic treatment. Main Outcome Measure(s) Magnetic resonance Neurography imaging revealed severe neuropathic injury and muscle denervation related to a deep infiltrative endometriotic focus at the sciatic notch, which was confirmed histologically on surgical exploration. Detailed electrodiagnostic and clinical neurologic examinations at initial presentation and during follow-up were obtained for further assessment of nerve degeneration, muscle denervation, and clinical recovery. Result(s) Initial gynecologic and eventual laparoscopic evaluation on persisting complaints were without pathological findings. When a progressive weakness of the leg was noted, magnetic resonance Neurography revealed a severe axonal damage to the sciatic nerve and denervation of distal target muscles related to a diffuse infiltrative lesion at the sciatic notch. On surgical exploration, extragenital endometriosis was confirmed histologically. Considerable improvement in pain and strength occurred after pharmacologic therapy with a GnRH analogue. Conclusion(s) This is the first report to describe imaging findings of magnetic resonance Neurography in severe neuropathic injury of the sciatic nerve and subsequent muscle denervation related to a deep infiltrative gluteal endometriotic focus.

Daniel Schwarz - One of the best experts on this subject based on the ideXlab platform.

Andrew T Dailey - One of the best experts on this subject based on the ideXlab platform.

  • The Value of MR Neurography for Evaluating Extraspinal Neuropathic Leg Pain: A Pictorial Essay
    2015
    Co-Authors: Kevin R Moore, Jay S Tsuruda, Andrew T Dailey
    Abstract:

    localizer image (280/14/1) indicates the sagittal oblique plane and coverage area for imaging the LS plexus and proximal sciatic nerve. Summary: Fifteen patients with neuropathic leg pain re-ferable to the lumbosacral plexus or sciatic nerve under-went high-resolution MR Neurography. Thirteen of the pa-tients also underwent routine MR imaging of the lumbar segments of the spinal cord before undergoing MR neu-rography. Using phased-array surface coils, we performed MR Neurography with T1-weighted spin-echo and fat-sat-urated T2-weighted fast spin-echo or fast spin-echo inver-sion recovery sequences, which included coronal, oblique sagittal, and/or axial views. The lumbosacral plexus and/or sciatic nerve were identified using anatomic location, fas-cicular morphology, and signal intensity as discriminator

  • the value of mr Neurography for evaluating extraspinal neuropathic leg pain a pictorial essay
    American Journal of Neuroradiology, 2001
    Co-Authors: Kevin R Moore, Jay S Tsuruda, Andrew T Dailey
    Abstract:

    Summary: Fifteen patients with neuropathic leg pain referable to the lumbosacral plexus or sciatic nerve underwent high-resolution MR Neurography. Thirteen of the patients also underwent routine MR imaging of the lumbar segments of the spinal cord before undergoing MR Neurography. Using phased-array surface coils, we performed MR Neurography with T1-weighted spin-echo and fat-saturated T2-weighted fast spin-echo or fast spin-echo inversion recovery sequences, which included coronal, oblique sagittal, and/or axial views. The lumbosacral plexus and/or sciatic nerve were identified using anatomic location, fascicular morphology, and signal intensity as discriminatory criteria. None of the routine MR imaging studies of the lumbar segments of the spinal cord established the cause of the reported symptoms. Conversely, MR Neurography showed a causal abnormality accounting for the clinical findings in all 15 cases. Detected anatomic abnormalities included fibrous entrapment, muscular entrapment, vascular compression, posttraumatic injury, ischemic neuropathy, neoplastic infiltration, granulomatous infiltration, neural sheath tumor, postradiation scar tissue, and hypertrophic neuropathy. Conventional techniques for MR imaging of the lumbar segments of the spinal cord are well described and provide an excellent initial imaging approach for patients with back and leg pain. Routine protocols for MR imaging of the lumbar segments of the spinal cord provide excellent visualization of the spinal axis, including the central canal and foramina, but do not show the extraforaminal ventral rami, lumbosacral plexus, or sciatic nerve well. Unfortunately, for the subgroup of patients with leg pain referable to the lumbosacral plexus or sciatic nerve, routine MR imaging of the lumbar segments of the spinal cord will not usually reveal the cause of the pain. Some of these patients have extraforaminal anatomic abnormalities that explain their

  • magnetic resonance Neurography for cervical radiculopathy a preliminary report
    Neurosurgery, 1996
    Co-Authors: Andrew T Dailey, Jay S Tsuruda, Robert Goodkin, David R Haynor, Aaron G Filler, Cecil E Hayes, Kenneth R Maravilla, Michel Kliot
    Abstract:

    Magnetic resonance Neurography was used to directly image cervical spinal nerves in patients with clinical and radiographic evidence of cervical radiculopathy. A magnetic resonance imaging phased-array coil system was used to obtain high-resolution coronal T1-weighted spin echo, coronal/axial T2-weighted fast spin echo with fat saturation, and coronal/axial fast short tau inversion recovery weighted images of the cervical spine and spinal nerves. Three patients with neck and upper extremity pain and one asymptomatic volunteer were studied. The T2-weighted and the fast short tau inversion recovery images demonstrated markedly increased signal in the proximal portion of the affected spinal nerves. In two patients, contrast-to-noise measurements of the affected spinal nerves showed a markedly increased intensity compared with that of the noninvolved spinal nerves. Our findings demonstrate that phased-array coils used in conjunction with magnetic resonance Neurography sequences can detect signal abnormalities within compressed cervical spinal nerves in patients with corresponding radicular symptoms and findings. This technique may prove to be helpful in evaluating patients with multilevel disc and/or spondylotic disease of the cervical spine.