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Språkvelger

Norsk

Johanna Vannesjo

Johanna Vannesjo

Associate Professor
Department of Physics
Faculty of Natural Sciences

johanna.vannesjo@ntnu.no
+4773592006 Realfagbygget, D4-168, Gløshaugen, Høgskoleringen 5
ResearchGate Google Scholar
About Publications Teaching

About

I work on methods development for Magnetic Resonance Imaging (MRI), with a particular focus on ultra-high field (7 Tesla) MRI of the spinal cord. Spinal cord MRI is affected by various perturbations to the magnetic fields that perform the spatial encoding of signal in MRI, sometimes drastically reducing the image quality. I look at characterizing the spatial and temporal characteristics of the magnetic field perturbations, which mostly are of physiological origin (e.g. breathing, static susceptibility), and develop methods to correct for them. This includes gradient system characterization, dynamic shimming and retrospective/prospective methods for addressing dynamic B0 field fluctuations. The goal is to achieve robust, high-resolution, high-quality, structural and functional images of the spinal cord.

Publications

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  • See all publications in Cristin

2023

  • Kaptan, Merve; Horn, Ulrike; Vannesjo, S. Johanna; Mildner, Toralf; Weiskopf, Nikolaus; Finsterbusch, Jürgen. (2023) Reliability of resting-state functional connectivity in the human spinal cord: Assessing the impact of distinct noise sources. NeuroImage
    Academic article
  • Schmidt, Tim; Vannesjo, S. Johanna; Sommer, Stefan; Nagy, Zoltán. (2023) fMRI with whole-brain coverage, 75-ms temporal resolution and high SNR by combining HiHi reshuffling and multiband imaging. Magnetic Resonance Imaging
    Academic article

2022

  • Kaptan, Merve; Vannesjo, Johanna; Mildner, Toralf; Horn, Ulrike; Hartley-Davies, Ronald; Oliva, Valeria. (2022) Automated slice-specific z-shimming for functional magnetic resonance imaging of the human spinal cord. Human Brain Mapping
    Academic article
  • Cohen-Adad, Julien; Alonso-Ortiz, Eva; Alley, Stephanie; Lagana, Maria Marcella; Baglio, Francesca; Vannesjo, Johanna. (2022) Comparison of multicenter MRI protocols for visualizing the spinal cord gray matter. Magnetic Resonance in Medicine
    Academic article
  • Nagy, Zoltan; Hutton, Chloe; David, Gergely; Hinterholzer, Natalie; Deichmann, Ralf; Weiskopf, Nikolaus. (2022) HiHi fMRI: a data-reordering method for measuring the hemodynamic response of the brain with high temporal resolution and high SNR. Cerebral Cortex
    Academic article

2021

  • Shi, Yuhang; Clare, Stuart; Vannesjo, S Johanna. (2021) Shim optimization with region of interest-specific Tikhonov regularization: Application to second-order slice-wise shimming of the brain. Magnetic Resonance in Medicine
    Academic article
  • Graedel, Nadine N; Kasper, Lars; Engel, Maria; Nussbaum, Jennifer; Wilm, Bertram J; Pruessmann, Klaas P. (2021) Feasibility of spiral fMRI based on an LTI gradient model. NeuroImage
    Academic article

Journal publications

  • Kaptan, Merve; Horn, Ulrike; Vannesjo, S. Johanna; Mildner, Toralf; Weiskopf, Nikolaus; Finsterbusch, Jürgen. (2023) Reliability of resting-state functional connectivity in the human spinal cord: Assessing the impact of distinct noise sources. NeuroImage
    Academic article
  • Schmidt, Tim; Vannesjo, S. Johanna; Sommer, Stefan; Nagy, Zoltán. (2023) fMRI with whole-brain coverage, 75-ms temporal resolution and high SNR by combining HiHi reshuffling and multiband imaging. Magnetic Resonance Imaging
    Academic article
  • Kaptan, Merve; Vannesjo, Johanna; Mildner, Toralf; Horn, Ulrike; Hartley-Davies, Ronald; Oliva, Valeria. (2022) Automated slice-specific z-shimming for functional magnetic resonance imaging of the human spinal cord. Human Brain Mapping
    Academic article
  • Cohen-Adad, Julien; Alonso-Ortiz, Eva; Alley, Stephanie; Lagana, Maria Marcella; Baglio, Francesca; Vannesjo, Johanna. (2022) Comparison of multicenter MRI protocols for visualizing the spinal cord gray matter. Magnetic Resonance in Medicine
    Academic article
  • Nagy, Zoltan; Hutton, Chloe; David, Gergely; Hinterholzer, Natalie; Deichmann, Ralf; Weiskopf, Nikolaus. (2022) HiHi fMRI: a data-reordering method for measuring the hemodynamic response of the brain with high temporal resolution and high SNR. Cerebral Cortex
    Academic article
  • Shi, Yuhang; Clare, Stuart; Vannesjo, S Johanna. (2021) Shim optimization with region of interest-specific Tikhonov regularization: Application to second-order slice-wise shimming of the brain. Magnetic Resonance in Medicine
    Academic article
  • Graedel, Nadine N; Kasper, Lars; Engel, Maria; Nussbaum, Jennifer; Wilm, Bertram J; Pruessmann, Klaas P. (2021) Feasibility of spiral fMRI based on an LTI gradient model. NeuroImage
    Academic article

Teaching

Courses

  • TFY4225 - Nuclear and Radiation Physics
  • MEDT8011 - Introduction to MR Imaging
  • FY6023 - Nuclear and Radiation Physics
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