MRI data were acquired on a 1.5 T GE Signa Excite scanner (GE Medical Systems, Milwaukee, WI, USA) using a standard GE whole-head coil. Each subject laid supine, with the head in a neutral position and fixed comfortably by a belt and foam pads during the test. High-resolution T1-weighted anatomical datasets were obtained parallel to the AC–PC plane and covering the whole brain using three-dimensional spoiled-gradient recall (SPGR) sequence (repetition time [TR]/echo time [TE]/inversion time [TI] =10.68 ms/4.87 ms/380 ms, flip angle =15°, field of view =256 mm, 140 axial slices, voxel size 1×1×1 mm3). Resting-state functional datasets were recorded using a T2*-weighted gradient echo spiral pulse sequence (30 axial slices, thickness/gap =5.0/1 mm, in-plane resolution =64×64, TR =2,000 ms, TE =40 ms, flip angle =90°, field of view (FOV) =240 mm ×240 mm). The scan time for the rsfMRI session for each participant was approximately 7 minutes.
Whole head coil
Manufactured by GE Healthcare
Sourced in United States
The Whole-head coil is a specialized piece of lab equipment used in magnetic resonance imaging (MRI) systems. Its core function is to transmit and receive radio frequency (RF) signals to and from the entire head region of a patient or subject during an MRI scan. The Whole-head coil is designed to provide comprehensive imaging coverage and data acquisition for applications that require high-resolution imaging of the entire brain and cranial structures.
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Lab products found in correlation
5 protocols using whole head coil
1
Resting-state fMRI Acquisition in a 1.5T Scanner
2
Functional MRI Imaging Protocol on 3T GE Scanner
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All images were acquired on a 3T GE MRI scanner (EXCITE, GE, Milwaukee, WI) using a standard GE whole-head coil with eight-channel phased array. Functional images were acquired with a single shot, gradient-recalled echo-planar imaging sequence. The sequence parameters were as follows: repetition time = 2000 milliseconds, echo time = 30 milliseconds, flip angle = 90°, slice thickness = 4 milliseconds (no gap), data matrix = 64 × 64, field of view = 24 cm × 24 cm, and 32 axial slices in each volume. Two hundred five volumes were acquired in a single run. The first 5 volumes were discarded to ensure stabilization of the major magnetic field. Subjects were asked to close their eyes and to remain awake during the scanning. Anatomical T1-weighted images were acquired using a 3-dimensional fast spoiled gradient recalled sequence. The parameters were as follows: thickness = 1 mm (no gap), repetition time = 8.2 milliseconds, echo time = 3.2 milliseconds, field of view = 25.6 cm × 25.6 cm, flip angle = 12°, data matrix = 256 × 256. There were 136 axial slices for each subject.
3
Functional MRI Protocol for Resting State
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Before undergoing scanning, participants were instructed to keep their eyes closed, remain awake, not to think about anything specific, and to keep their heads still while in the MRI scan. MRI data were acquired on a 1.5 T GE Signal scanner using a standard GE whole-head coil. Blood oxygen level-dependent (BOLD) signals during functional runs were obtained by means of a T2*-weighted single-shot gradient echo-planar-imaging (EPI) sequence with the following parameters: TR/TE = 2500/30 ms; flip angle = 90°; data matrix = 64 × 64; FOV = 240 × 240 mm2; slice thickness = 3 mm with inner-slice gap = 0.5 mm; the sequence duration was 370 s for each subject, 150 time points were acquired.
4
Resting-state fMRI Acquisition on 1.5T MRI
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Details of MRI data acquisition are as described in our previous work.2 (link) Briefly, T1-weighted (field of view=25.6 cm, 140 axial slices with slices thickness=1 mm, no gap) anatomic and resting-state functional (30 axial slices, TR=2 s, field of view=24 cm, 200 volumes) datasets were acquired on a 1.5 T MRI scanner (GE Medical Systems, Milwaukee, WI, USA) using a standard GE whole-head coil. Each subject was laid supine, with the head in a neutral position and fixed comfortably by a belt and foam pads during the test.
5
Functional MRI Acquisition Protocol
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Functional MRI scans were acquired using a 3T magnetic resonance imaging (MRI) scanner (Siemens MAGNETOM Trio 3T, Germany) with a standard GE whole head coil performed at the MRI Research Center of the 306th Hospital of the People’s Liberation Army. During scanning, foam padding and earplugs were used to reduce head motion and scanning noise, respectively. The functional images were acquired using gradient echo-planar imaging (EPI) sequences [slices = 30, averages/measurements = 1/244, echo time (TE) = 30 msec, repetition time (TR) = 2,000 msec, flip angle (FA) = 90°, field of view [FOV] = 210 mm × 210 mm, matrix = 64 × 64, acquisition voxel size = 3.3 mm × 3.3 mm × 4.0 mm, reconstructed voxel size = 3 mm × 3 mm × 3 mm, multislice mode/series: interleaved/descending, bandwidth = 2,232, and slice thickness/gap = 4 mm/0.8 mm] with an eight channel phased array head coil. To ensure steady-state longitudinal magnetization, the first five volumes were discarded. Subsequently, high-resolution T1-weighted images were acquired using a 3-dimensional fast spoiled gradient echo (T1-3D FSPGR) sequence (TR = 2,300 msec, TE = 2.98 msec, FA = 9°, matrix = 256 × 256, FOV = 240 mm × 256 mm, slice thickness/gap = 1 mm/0.5 mm, and slices = 176).
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