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Magnetom trio 3 tesla scanner

Manufactured by Siemens
Sourced in United States

The Magnetom Trio 3 Tesla scanner is a magnetic resonance imaging (MRI) system manufactured by Siemens. It operates at a magnetic field strength of 3 Tesla, which allows for high-resolution imaging. The Magnetom Trio 3 Tesla scanner is designed to capture detailed images of the body's internal structures.

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9 protocols using magnetom trio 3 tesla scanner

1

Multimodal MRI Protocol for Stroke

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MRI data were obtained on a Siemens Magnetom Trio 3 Tesla scanner. Whole brain, dual‐echo, BOLD GE‐echoplanar imaging (EPI) images (repetition time (TR) = 2 s, echo time (TE1) = 13 ms, TE2 = 31 ms, voxel‐size 3.5 × 3.5 × 3 mm3, 36 slices) were collected during a breath‐hold task (see below). Only the second echo was analysed in this study. Quadratic shim gradients were used to correct for magnetic field inhomogeneities within the brain, and residual field artefacts were compensated after acquiring fieldmap images. A high‐resolution 1 mm3 isotropic T1‐weighted whole‐brain structural image was obtained.
In addition, diagnostic diffusion‐weighted MRI (DWI) and apparent diffusion co‐efficient (ADC) imaging obtained by the clinical stroke services at the time of each patient's admission to hospital was available to assist with determination of the boundary of regional infarction (see below). DWI and ADC images were performed in a Siemens Verio 3T scanner via diffusion‐weighted EPI sequences. Nineteen DWI axial slices were acquired at b = 0, 500 and 1,000 s/mm2 covering the entire brain. Other imaging parameters were: TR/TE 4,600/90 ms, field of view 267 × 267, matrix 192 × 192, slice thickness 5 mm, with 6.5 mm spacing. The ADC maps were acquired with identical parameters with b = 1,000 s/mm2 .
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2

fMRI Study of Thirst and Water Satiety

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The fMRI data were collected at the Murdoch Children’s Research Institute (Melbourne, Australia) using a Siemens Magnetom Trio 3 Tesla scanner (Siemens AG) incorporating a 32-channel head coil. For details regarding acquisition parameters, refer to ref. 28 (link). Four functional scans and one structural scan were acquired. The first two functional scans represented the thirsty condition; the third and fourth represented the oversated condition. After the second scan, participants were removed from the scanner and drank as much water as they could comfortably tolerate. While in the scanner, participants received 5-mL volumes of the liquid stimulus, which they briefly held in their mouth before swallowing. Participants subsequently rated the pleasantness of the liquid taste and the effort required to swallow it. For full details of the experimental protocol, see figure S1 of ref. 28 (link).
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3

High-Resolution 3T Brain MRI Protocol

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Participants were scanned on a Siemens Magnetom Trio 3Tesla scanner with a 12-channel head coil at the Ahmanson-Lovelace Brain Mapping Center (Los Angeles, CA.). Specifications for Magnetization Prepared Rapid Acquisition Gradient Echo imaging were as follows: 192 slices at 1mm slice thickness, voxel size: 1.0mmx1.0mmx1.0mm, field of view: 256mm, flip angle: 9 degrees, repetition time (TR) = 1900ms, echo time (TE) = 3.25ms.
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4

Resting-State fMRI Acquisition Protocol

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Structural and functional subjects data were acquired on Siemens Magnetom trio 3 Tesla scanner (Siemens Healthcare Inc., United States) equipped with a 32-channel head coil. For image registration, a high-resolution T1-weighted anatomical image was collected using a magnetization-prepared, rapid-acquisition gradient-echo (MPRAGE) (176 slice; slice thickness = 1 mm; TR = 2520 ms; TE = 1.74 ms; TI = 800 ms; FOV = 220 mm2, matrix size = 220 × 220). The resting state imaging sequence consisted of a T2-weighted echo planar imaging sequence (300 volumes, slice thickness = 5 mm, slice number = 34, slice order = interleaved, TR = 2010 ms, TE = 30 ms, flip angle = 90°, FOV = 224 mm2, matrix size = 64 × 64, voxel size 3.5 mm × 3.5 mm). Subjects were instructed to relax and to keep their eyes open during the 10 min 5 s of the resting state scan.
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5

Multi-Modal MRI Acquisition Protocol

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MRI was acquired using a Magnetom TRIO 3 Tesla scanner (Siemens Healthcare, United States). The sequence included a three-dimensional T1-weighted Turbo Flash multi-echo Magnetization-prepared rapid gradient-echo (MPRAGE) with a 32-channel head coil using the parameters from the E5 Massachusetts General Hospital (Boston, Massachusetts, United States). Acquisition parameters were: repetition time = 2,530 ms/root mean square of 4 echo times = 1.64 ms, 3.50 ms, 5.36 ms, 7.22 ms; matrix size = 256×256; field of view = 256×256 mm; voxel size = 1.0 mm isotropic, flip angle = 7 °; and 176 sagittal orientations. Two resting-state functional MRI time series (150 images each, lasting 6.5 min) were then acquired. The resting-state functional MRI sequences included multislice T2*-weighted fMRI images obtained with a gradient echo-planar sequence (EPI axial) (2D-EP) (42 axial slices; slice thickness 3.4 mm; gap 3.4 mm, matrix size 64 × 64 × 42; repetition time (TR) 2,600 ms; echo time (TE) 30 ms; flip angle 90°, FoV: 218 mm). During the 6.5-min resting-state fMRI sequence, participants were asked to fix a white dot on a black screen. Wakefulness was ensured using a camera. We also acquired T2 and FLAIR sequences, which were not analyzed in the present article, but used to detect clinically-significant anomalies.
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6

High-Resolution 3T MRI Brain Imaging

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Participants were scanned on a Siemens Magnetom Trio 3-Tesla scanner with a 12-channel head coil at the Ahmanson-Lovelace Brain Mapping Center (ALBMC). Specifications for Magnetization Prepared Rapid Acquisition Gradient Echo imaging were as follows: 192 slices at 1mm slice thickness, voxel size: 1.0mmx1.0mmx1.0mm, field of view: 256mm, flip angle: 9 degrees, repetition time=1900ms, echo time=3.25ms.
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7

Multimodal MRI Acquisition for Neuroscience

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We acquired imaging data at the Athinoula A. Martinos Center for Biomedical Imaging at MIT with a Siemens Magnetom Trio 3-tesla scanner with a 32-channel phased-array head coil. T1-weighted structural images were collected using the magnetization-prepared rapid acquisition gradient echo (MPRAGE) sequence (TR = 2530 ms; TE = 1.64–7.22 ms; TI = 1400 ms; flip angle = 7°; 1 × 1 × 1-mm3 isotropic voxels; matrix size: 256 × 256; 172 slices). Whole-brain diffusion-weighted images were collected with a spin-echo echo-planar sequence (TR = 8420 ms; TE = 84 ms; 2 × 2 × 2 mm3 isotropic voxels; matrix size: 128 × 128; 67 slices). This included 60 gradient orientations at b = 700 s/mm2 and 10 no-diffusion images (b = 0). Sixty-two volumes of eyes-open resting state data were collected with a 6 s TR. As with the diffusion images, the resting state matrix size was 128 × 128 × 67 with 2 × 2 × 2 mm3 isotropic voxels. T1 and diffusion data from these subjects were previously published (Cai et al., 2014 (link)). Resting state data were collected from the same subjects in the same MRI sessions.
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8

Multimodal MRI Imaging Protocol

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MR scanning was performed at 1.5 Tesla (n=16) or 3.0 Tesla (n=64) using a GE Signa 1.5 Tesla scanner (GE Medical Systems, Milwaukee, WI) or a Siemens MAGNETOM Trio 3 Tesla Scanner (Siemens Medical Solutions USA, Malverne, PA), respectively.
The protocol on the 1.5T scanner: 3D structural MR images were acquired at a coronal orientation using 3D Spoiled Gradient Recalled Echo (TR/TE = 5/25 ms; flip angle = 40°; FOV = 24×18cm, 124 slices, slice thickness = 1.5mm, in-plane resolution 0.9375 mm × 0.9375 mm). The T2-weighted Fluid Attenuated Inversion Recovery (FLAIR) was acquired in the axial orientation (TR/TE 9004/172 ms; TI = 2200 ms, 24 slices, in plane resolution 0.78 mm × 0.78 mm); section thickness was 5mm with a 1-mm intersection gap, a 24cm field of view and a 192 × 256 pixel matrix.
The protocol on the 3T scanner: 3D structural MR images were acquired at a sagittal orientation using 3D magnetization-prepared rapid acquisition with gradient echo (MPRAGE). MPRAGE (TR/TE=2300/2.98 ms, 256 slices, slice thickness 1.2 mm, flip angle = 9, in-plane resolution 1 mm × 1 mm). The T2-weighted FLAIR was acquired in the axial orientation (TR=9160 ms, TE=90 ms, TI =2500 ms, 48 slices, in-plane resolution 1mm × 1mm); section thickness was 3mm with no intersection gap, a 24cm field of view and a 192 × 256 pixel matrix.
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9

Multimodal MRI Imaging Protocol

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MR scanning was performed at 1.5 Tesla (n=16) or 3.0 Tesla (n=64) using a GE Signa 1.5 Tesla scanner (GE Medical Systems, Milwaukee, WI) or a Siemens MAGNETOM Trio 3 Tesla Scanner (Siemens Medical Solutions USA, Malverne, PA), respectively.
The protocol on the 1.5T scanner: 3D structural MR images were acquired at a coronal orientation using 3D Spoiled Gradient Recalled Echo (TR/TE = 5/25 ms; flip angle = 40°; FOV = 24×18cm, 124 slices, slice thickness = 1.5mm, in-plane resolution 0.9375 mm × 0.9375 mm). The T2-weighted Fluid Attenuated Inversion Recovery (FLAIR) was acquired in the axial orientation (TR/TE 9004/172 ms; TI = 2200 ms, 24 slices, in plane resolution 0.78 mm × 0.78 mm); section thickness was 5mm with a 1-mm intersection gap, a 24cm field of view and a 192 × 256 pixel matrix.
The protocol on the 3T scanner: 3D structural MR images were acquired at a sagittal orientation using 3D magnetization-prepared rapid acquisition with gradient echo (MPRAGE). MPRAGE (TR/TE=2300/2.98 ms, 256 slices, slice thickness 1.2 mm, flip angle = 9, in-plane resolution 1 mm × 1 mm). The T2-weighted FLAIR was acquired in the axial orientation (TR=9160 ms, TE=90 ms, TI =2500 ms, 48 slices, in-plane resolution 1mm × 1mm); section thickness was 3mm with no intersection gap, a 24cm field of view and a 192 × 256 pixel matrix.
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