A supplemental receiver coil recovers frontal and subcortical functional magnetic resonance imaging signals under half-volume head coil configuration

The need for multisensory devices such as virtual reality and touch during functional magnetic resonance imaging (fMRI) is increasing. However, implementation of those devices requires a large presentation system, and the face-covering receiver coil obstructs their placement. To create more space, i...

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Bibliographic Details
Published in:Neuroscience research Vol. 219; p. 104943
Main Authors: Yuan, Yucong, Tanaka, Toshiko, Nishiyama, Daisuke, Shimada, Yasuhiro, Fujimoto, Ichiro, Haji, Tomoki, Wada, Atsushi, Haruno, Masahiko
Format: Journal Article
Language:English
Published: Ireland Elsevier B.V 01.10.2025
Elsevier
Subjects:
Adult
Amygdala
Brain - diagnostic imaging
Brain - physiology
Brain Mapping - instrumentation
Brain Mapping - methods
Facial Expression
Female
Flexible surface coil
Frontal cortex
Frontal head clearance
Half-volume head coil
Humans
Magnetic Resonance Imaging - instrumentation
Magnetic Resonance Imaging - methods
Male
Signal-To-Noise Ratio
Subcortex
Virtual reality
Young Adult
Amygdala
Virtual reality
Signal-to-noise ratio
Half-volume head coil
Frontal head clearance
Frontal cortex
Subcortex
Flexible surface coil
ISSN:0168-0102, 1872-8111, 1872-8111
Online Access:Get full text
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Summary:The need for multisensory devices such as virtual reality and touch during functional magnetic resonance imaging (fMRI) is increasing. However, implementation of those devices requires a large presentation system, and the face-covering receiver coil obstructs their placement. To create more space, it has been proposed to remove the front half coil and place a small elliptical flex receiver coil on the participant's forehead. However, this coil configuration's signal intensity has not been evaluated quantitatively and needs validation for use in various fMRI experiments. In this study, we first compared signal-to-noise ratios of resting-state fMRI for different brain regions under full, posterior half only, and posterior half + flex coil conditions and found that the flex coil improved the fMRI signal in both frontal and subcortical regions significantly. Furthermore, we tested the flex coil during a facial expression discrimination task, finding it enabled the detection of task-related fMRI signals in areas related to emotional decision-making and perception such as the amygdala. Thus, this study demonstrated the usefulness of the flex configuration in various fMRI experiments requiring additional equipment in front of the face, expanding the range of fMRI studies. •Adding forehead coil to half-head coil recovered frontal and subcortical MR signals.•Whole brain resting-fMRI signals were quantitatively evaluated using our setup.•Task-fMRI identified significant BOLD responses in front-subcortical network.•The new coil setup enabled both forehead clearance and high-sensitivity fMRI.
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ISSN:0168-0102
1872-8111
1872-8111
DOI:10.1016/j.neures.2025.104943