32 channel receiver head coil, by Philips - Product details

1

Functional Neuroimaging of Cognitive Processes

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Functional MRI data were collected at the University of Chicago MRIRC using a 3 T Philips Achieva scanner with a 32 receiver channel head coil and a gradient-echo echo-planar imaging sequence with the following acquisition parameters: TR = 2,000 ms; TE = 28; 39 3 mm thick axial slices aligned to the AC-PC line, 0.6 mm slice gap; 20 × 20 cm field-of-view; SENSE factor = 2, Flip angle = 77°. Four initial volumes were acquired and discarded just prior to task start, to allow for T1 equilibrium effects. A high resolution T1-weighted image (MPRAGE sequence) was also acquired to assess for incidental findings, and for alignment and spatial standardization of the functional data. Motion was minimized with foam packing around the head. Stimuli were viewed via projection onto a mirror mounted on the head coil. We also acquired arterial spin labeling (ASL) images to assess perfusion changes. Parameters included: TR = 4,692 ms; TE = 13 ms; Flip angle = 90 °; labeling time = 1,800 ms; post label delay = 1,800 ms. A total of 35 pairs of ASL volumes were acquired.

Molla H., Keedy S., DeBrosse J, & de Wit H. (2023). Methamphetamine enhances neural activation during anticipation of loss in the monetary incentive delay task. Cerebral Cortex Communications, 4(3), tgad014.

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Functional Neuroimaging of Cognitive Processes

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Functional MRI data were collected at the University of Chicago MRIRC using a 3 T Philips Achieva scanner with a 32 receiver channel head coil and a gradient-echo echo-planar imaging sequence with the following acquisition parameters: TR = 2,000 ms; TE = 28; 39 3 mm thick axial slices aligned to the AC-PC line, 0.6 mm slice gap; 20 × 20 cm field-of-view; SENSE factor = 2, Flip angle = 77°. Four initial volumes were acquired and discarded just prior to task start, to allow for T1 equilibrium effects. A high resolution T1-weighted image (MPRAGE sequence) was also acquired to assess for incidental findings, and for alignment and spatial standardization of the functional data. Motion was minimized with foam packing around the head. Stimuli were viewed via projection onto a mirror mounted on the head coil. We also acquired arterial spin labeling (ASL) images to assess perfusion changes. Parameters included: TR = 4,692 ms; TE = 13 ms; Flip angle = 90 °; labeling time = 1,800 ms; post label delay = 1,800 ms. A total of 35 pairs of ASL volumes were acquired.

Molla H., Keedy S., DeBrosse J, & de Wit H. (2023). Methamphetamine enhances neural activation during anticipation of loss in the monetary incentive delay task. Cerebral Cortex Communications, 4(3), tgad014.

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3

High-Resolution MRI of Brain Structure and Function

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All images were collected using a Phillips 3T Achieva Magnetic Resonance scanner, with a 32 channel receiver head coil located at Academic Hospital Gasthuisberg, Leuven, Belgium. T1 weighted anatomical images were collected with a Magnetization Prepared Rapid Gradient Echo (MPRAGE) sequence (time repetition, TR = 9.6 ms, time echo, TE = 4.6 ms, flip angle = 8°). The data consisted of 160 slices covering the brain. Slices were 1.2-mm thick, with no gap between the slices. Voxel size was 0.98 × 0.98 × 1.2 mm arranged in a 256 × 256 matrix with a 250 mm² field of view (FOV).
Functional images were collected using an Echo Planar Imaging sequence (TR = 3,000 ms, TE = 30 ms, flip angle = 90°). Functional data consisted of 120 volumes for each of the 9 runs (8 motor task; 1 baseline with no movement). The order of the runs was identical for all participants. Each volume consisted of 54 bottom-to-top sequentially collected slices and each slice was 2.5-mm thick with a 0.2-mm gap between the slices. Voxels were 2.5 × 2.5 × 2.5 mm arranged in an 84 × 84 voxel matrix resulting in a FOV of 210 mm².

Van Ruitenbeek P., Santos Monteiro T., Chalavi S., King B.R., Cuypers K., Sunaert S., Peeters R, & Swinnen S.P. (2022). Interactions between the aging brain and motor task complexity across the lifespan: balancing brain activity resource demand and supply. Cerebral Cortex (New York, NY), 33(10), 6420-6434.

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4

High-Resolution 3D T1-Weighted MRI Acquisition

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Structural brain images were acquired at the Neuroimaging Service of the Pablo de Olavide University (Seville, Spain) using a 3T Philips Ingenia CX MRI scanner equipped with a 32-channel receiver head coil (Philips, Best, The Netherlands). Head motion was minimized by placing foam padding around the subject’s head. One high-resolution three-dimensional (3D) T1-weighted magnetization-prepared rapid gradient echo (MP-RAGE) sequence was acquired in the sagittal plane. Acquisition parameters were empirically optimized to enhance the gray/white matter (WM) contrast with repetition time (TR)/echo time (TE) = 2600/4.7 ms, flip angle (FA) = 9°, voxel resolution = 0.65 mm isotropic, acquisition matrix = 384 mm × 384 mm, resulting in 282 contiguous slices without gap between adjacent slices, acceleration factor (SENSE) = 1.7, and field of view (FOV) = 250 mm × 250 mm × 183 mm.

Bierbrauer A., Kunz L., Gomes C.A., Luhmann M., Deuker L., Getzmann S., Wascher E., Gajewski P.D., Hengstler J.G., Fernandez-Alvarez M., Atienza M., Cammisuli D.M., Bonatti F., Pruneti C., Percesepe A., Bellaali Y., Hanseeuw B., Strange B.A., Cantero J.L, & Axmacher N. (2020). Unmasking selective path integration deficits in Alzheimer’s disease risk carriers. Science Advances, 6(35), eaba1394.

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5

Multimodal Neuroimaging Preprocessing in SPM8

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In each experiment, MRI data were acquired with the same 3T Philips Achieva MRI scanner (Philips Medical Systems, Andover, MA, USA) equipped with a 32 channel receiver head coil. Functional images were acquired using a T2*-weighted, blood oxygen level-dependent echoplanar (EPI) sequence (SENSE factor 1.5, flip angle 70º, 80 × 80 matrix, FOV = 24 cm, TR = 2000 ms, TE = 30 ms) and T1-weighted anatomical images were acquired with a magnetization-prepared rapid gradient echo (MPRAGE) pulse sequence (FOV= 240×240, 1mm3 isotropic voxels).
MRI data were preprocessed in SPM8 (Wellcome Department of Cognitive Neurology, London, UK). Briefly, functional scans were realigned to the mean EPI image, subjected to slice timing correction, reoriented to approximate the Montreal Neurological Institute (MNI) reference template, spatially normalized to MNI space, and smoothed using an 8mm full-width half maximum Gaussian kernel. Anatomical images were similarly normalized to MNI space.

King D.R., de Chastelaine M., Elward R.L., Wang T.H, & Rugg M.D. (2017). Dissociation between the neural correlates of recollection and familiarity in the striatum and hippocampus: across-study convergence. Behavioural brain research, 354, 1-7.

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6

Probing Cortical GABA+ with Edited MRS

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A Philips 3T Achieva MR scanner (Philips Healthcare, The Netherlands) with a 32-channel receiver head coil was used for acquisition of a high-resolution 3D magnetization prepared rapid gradient echo (MPRAGE) T₁-weighted anatomical image (TR = 9.6 ms; TE = 4.6 ms; 0.98 × 0.98 × 1.2 mm³ resolution; field of view = 256 × 256 mm²; 160 sagittal slices; flip angle = 8°). The edited MRS protocol was used to measure GABA with contribution from macromolecules (MM), commonly referred to as GABA+, using MEGA-PRESS: 14-ms editing pulses at 1.9 parts per million (ppm) of the proton frequency (edit-ON) and 7.46 ppm (edit-OFF); TR = 2000 ms; TE = 68 ms; 320 averages; 2048 points; 2 kHz spectral width; MOIST water suppression (Murdoch and Lampman, 1993 ). GABA + levels were measured in 3 × 3 × 3 cm³ voxels. The left and right M1 voxels were centered over the hand knob area (Yousry et al., 1997 (link)), parallel to the anterior and posterior axis. Due to overlap with the primary sensory area, we call this an SM voxel. The voxel was rotated to align with the cortical surface based on the coronal and sagittal views (see Fig. 1A).

Cuypers K., Verstraelen S., Maes C., Hermans L., Hehl M., Heise K.F., Chalavi S., Mikkelsen M., Edden R., Levin O., Sunaert S., Meesen R., Mantini D, & Swinnen S.P. (2019). Task-related measures of short-interval intracortical inhibition and GABA levels in healthy young and older adults: A multimodal TMS-MRS study. NeuroImage, 208, 116470.

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7

Structural Brain Imaging of Adolescents

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Adolescents were scanned on a 3T Philips Achieva Multix X-Series scanner with a 32-channel receiver head coil at the Kirby Center for Brain Imaging at the Kennedy Krieger Institute. Structural MRI scans were acquired with a T₁-weighted MPRAGE sequence collected along the AC-PC line (1 mm isotropic resolution; TE/TR = 3.8/8 ms, flip angle = 8°, 150 slices, 224 x 224 matrix). The structural scans were acquired as part of a larger scan session including functional imaging.

Thapaliya G., Chen L., Jansen E., Smith K.R., Sadler J.R., Benson L., Papantoni A, & Carnell S. (2020). Familial obesity risk and current excess weight influence brain structure in adolescents. Obesity (Silver Spring, Md.), 29(1), 184-193.

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8

Brain Imaging and Neuronavigation Protocol

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MRI data were acquired with a 3T Philips Achieva MRI scanner (Philips Medical Systems, Andover, MA, USA) equipped with a 32-channel receiver head coil. T1-weighted structural images (MPRAGE sequence, 240 × 240 matrix, 1mm isotropic voxels) were acquired. Each T1 image was normalized to an independent sample-specific template derived from 36 young and 64 older adult T1 images using Statistical Parametric Mapping (SPM12) software. The transformation matrix was then used to back-project a DLPFC ROI into each participant’s native space using neuronavigation software (see TMS procedure).

Hill P.F., Horne E.D., Koen J.D, & Rugg M.D. (2021). Transcranial magnetic stimulation of right dorsolateral prefrontal cortex does not affect associative retrieval in healthy young or older adults. Neuroimage. Reports, 1(3), 100027.

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9

High-Resolution 7T MRI Cortical Mapping

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High resolution MR images were acquired using a Philips Achieva 7 T MRI system equipped with a 32-channel receiver head coil. T₁- and

T_{2}^{*}

-weighted images were acquired, and quantitative

R_{2}^{*}

(= 1/

T_{2}^{*}

) maps generated in order to visualize variations in tissue composition across the cortex. For the

R_{2}^{*}

values the log of the data was taken so that we could make a linear fit for each voxel through the echo times. Three-dimensional T₁-weighted phase-sensitive inversion recovery (PSIR) images were acquired with 0.3 × 0.3 × 0.6 mm³ resolution (field of view = 25.2 × 105 × 105 mm³, flip angle = 26⋅, echo time = 4.05 ms, repetition time = 8.52 ms), with a scan duration of 6 h and 35 min. Images were acquired at two inversion times, using a tailored inversion pulse (Hurley et al., 2010 (link)) and then the PSIR image was calculated (Mougin et al., 2015 (link)). Multi-echo three dimensional

T_{2}^{*}

-weighted gradient-recalled echo (

T_{2}^{*}

-wt. GRE) images were acquired with 0.3 × 0.3 × 0.3 mm³ resolution (field of view = 30 × 105 × 105 mm³, flip angle = 30⋅, echo time = 8/21/34 ms, repetition time = 200 ms), with a scan duration of 3 h and 55 min. Quantitative

R_{2}^{*}

maps were calculated from the

T_{2}^{*}

-weighted images using MATLAB (The Mathworks, Inc., Natick, Massachusetts, USA).

Wallace M.N., Cronin M.J., Bowtell R.W., Scott I.S., Palmer A.R, & Gowland P.A. (2016). Histological Basis of Laminar MRI Patterns in High Resolution Images of Fixed Human Auditory Cortex. Frontiers in Neuroscience, 10, 455.

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10

Neuroimaging Protocol: 3T MRI Acquisition

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Participants were scanned using a 3 Tesla Philips Achieva MRI scanner (Philips Medical Systems) equipped with a 32-channel receiver head coil. T1-weighted images were acquired with a 3D magnetization-prepared rapid gradient echo (MP-RAGE) pulse sequence (FOV 256 x 256, 1x1x1 mm voxel size, 176 slices, sagittal acquisition). Functional data were obtained using a T2*-weighted echo-planar imaging (EPI) sequence (270 volumes, 33 axial images per volume, TR = 2 s, TE = 30 ms, flip angle 70°) with 3 mm thick slices (1 mm interslice gap, 3x3 mm in-plane resolution). Functional data were acquired in ascending order with a sensitivity encoding (SENSE) reduction factor of 2. The first 5 volumes of each block were discarded to allow tissue magnetization to reach equilibrium.

Hou M., Horne E.D., de Chastelaine M, & Rugg M.D. (2022). Divided attention at retrieval does not influence neural correlates of recollection in young or older adults. NeuroImage, 250, 118918.

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32 channel receiver head coil

Lab products found in correlation

16 protocols using 32 channel receiver head coil

Functional Neuroimaging of Cognitive Processes

Functional Neuroimaging of Cognitive Processes

High-Resolution MRI of Brain Structure and Function

High-Resolution 3D T1-Weighted MRI Acquisition

Multimodal Neuroimaging Preprocessing in SPM8

Probing Cortical GABA+ with Edited MRS

Structural Brain Imaging of Adolescents

Brain Imaging and Neuronavigation Protocol

High-Resolution 7T MRI Cortical Mapping

Neuroimaging Protocol: 3T MRI Acquisition

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