ArticlePloS one2021
Evaluation of the whole auditory pathway using high-resolution and functional MRI at 7T parallel-transmit.
Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Towards Large Diameter Transmit Coils for 7-T Head Imaging: A Detailed Comparison of a Set of Transmit Element Design Concepts.NMR in biomedicine · 2025Article
- Open-transmit and flexible receiver array for high resolution ultrahigh-field fMRI of the human sensorimotor cortex.Communications biology · 2025Article
- Morphology of the human inner ear and vestibulocochlear nerve assessed using 7 T MRI.Magma (New York, N.Y.) · 2025Article
- Electric field and SAR reduction in high-impedance RF arrays by using high permittivity materials for 7T MR imaging.PloS one · 2024Article
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4 authors.
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Abstract
purposeThe aim of the present study is to show a MR procedure for the evaluation of simultaneous left and right auditory functions with functional MRI, and high-resolution acquisition of anatomical auditory pathway using parallel-transmit (pTx) methods at 7T.
methodsThe time-efficient MR acquisition included two steps: RF weights were optimized for the regions-of-interest and high-resolution MR images of the inner-ear were acquired for the first 30 min (400 μm-iso resolution) followed by functional MRI acquisitions along the whole auditory pathway during the next 20 minutes. Data was processed with a linear cross-correlation analysis to define frequency preferences for each voxel in the auditory relays.
resultsTonotopic maps revealed ordered bilateral frequency gradients in the auditory relays whereas at the level of the cochlear nuclei and superior olivary complexes the frequency gradients were less evident. A 21% increase in transmit-field efficiency was achieved over the left/right inner-ear regions and thus its main structures were clearly discernible using the pTx methods, compared to a single transmit RF coil.
conclusionUsing 7T pTx allows a fast (less than 60 min in total) and qualitative evaluation of the simultaneous left and right auditory response along the entire auditory pathway, together with high-resolution anatomical images of the inner-ear. This could be further used for patient examination at 7T.
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