Cardiac imaging was performed using a GE 1.5 Tesla scanner (General Electric Healthcare, Waukesha, WI). Electrocardiogram-gated cine images of the heart were acquired. A series of long and short-axis images of the LV were obtained in which slices were oriented perpendicular to or along the long axis of the LV.
1.5 tesla ge scanner
Manufactured by GE Healthcare
Sourced in United States
The 1.5-Tesla GE scanner is a magnetic resonance imaging (MRI) system designed for diagnostic imaging. It generates a 1.5-Tesla magnetic field to acquire high-quality images of the human body. The scanner is capable of producing detailed anatomical information to assist healthcare professionals in their medical assessments.
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7 protocols using 1.5 tesla ge scanner
1
Cardiac Magnetic Resonance Imaging
2
Whole-Brain fMRI Acquisition Protocol
3
Whole-Brain fMRI Acquisition Protocol
4
Breast Implant MRI Evaluation Protocol
5
Infant Brain MRI and fMRI in Hospital
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Infants underwent MRI scans at 6 months of life using a 1.5-Tesla GE scanner at the Department of Diagnostic and Interventional Imaging of the KK Women's and Children's Hospital. The imaging protocols were (i) fast spin-echo T2-weighted MRI (axial acquisition; TR=3500 ms; TE=110 ms; FOV=256 mm × 256 mm; matrix size=256 × 256; 50 axial slices with 2.0 mm thickness), (ii) fast spin-echo T2-weighted MRI (coronal acquisition; TR=3500 ms; TE=110 ms; FOV=256 mm × 256 mm; matrix size=256 × 256; 50 axial slices with 2.0 mm thickness) and (iii) echo planar rs-fMRI (axial acquisition; TR=2500 ms; TE=40 ms; FOV=192 mm × 192 mm; matrix size=64 × 64; 40 axial slices with 3.0 mm thickness; 120 volumes). The scans were acquired when the subjects were sleeping in the scanner. No sedation was used and precautions were taken to reduce exposure to the MRI scanner noise. A neonatologist was present during each scan. A pulse oximeter was used to monitor heart rate and oxygen saturation through the entirety of the scans.
6
Infant Brain Imaging Protocol in MRI Scanner
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During the acquisition sessions, infants slept in a 1.5-Tesla GE scanner (GE Healthcare, Milwaukee, WI, USA) at the Department of Diagnostic and Interventional Imaging of the KK Hospital. No sedation was used, and precautions were taken to reduce exposure to MRI scanner noise. A neonatologist was present during each scan. A pulse oximeter was used to monitor heart rate and oxygen saturation through the entirety of the scans.
The imaging protocols were (i) fast spin-echo T2-weighted MRI (axial acquisition; TR=3500 ms; TE=110 ms; FOV=256 × 256 mm; matrix size=256 × 256; 50 axial slices with 2.0 mm thickness); (ii) fast spin-echo T2-weighted MRI (coronal acquisition; TR=3500 ms; TE=110 ms; FOV=256 × 256 mm; matrix size=256 × 256; 50 axial slices with 2.0 mm thickness); (iii) echo planar resting-state fMRI (axial acquisition; TR=2500 ms; TE=40 ms; FOV=192 × 192 mm; matrix size=64 × 64; 40 axial slices with 3.0 mm thickness, 120 volumes). The coronal T2-weighted MRI data were acquired parallel to the anterior–posterior axis of the hippocampus and only covered the temporal lobe. Each subject obtained two acquisitions of the axial T2-weighted MRI and one acquisition of the coronal T2-weighted MRI at baseline and follow-up. All brain scans were reviewed by a neuroradiologist (MVF). Images were analyzed blind to sensitivity ratings.
The imaging protocols were (i) fast spin-echo T2-weighted MRI (axial acquisition; TR=3500 ms; TE=110 ms; FOV=256 × 256 mm; matrix size=256 × 256; 50 axial slices with 2.0 mm thickness); (ii) fast spin-echo T2-weighted MRI (coronal acquisition; TR=3500 ms; TE=110 ms; FOV=256 × 256 mm; matrix size=256 × 256; 50 axial slices with 2.0 mm thickness); (iii) echo planar resting-state fMRI (axial acquisition; TR=2500 ms; TE=40 ms; FOV=192 × 192 mm; matrix size=64 × 64; 40 axial slices with 3.0 mm thickness, 120 volumes). The coronal T2-weighted MRI data were acquired parallel to the anterior–posterior axis of the hippocampus and only covered the temporal lobe. Each subject obtained two acquisitions of the axial T2-weighted MRI and one acquisition of the coronal T2-weighted MRI at baseline and follow-up. All brain scans were reviewed by a neuroradiologist (MVF). Images were analyzed blind to sensitivity ratings.
7
MRI Imaging of Shoulder Pathology
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Imaging was performed using a 1.5 tesla GE scanner with a shoulder array coil. The slice thickness was 3 mm, inter slice gaps were 10%, and the field of view was 150 mm. The following standard MRI sequences of the shoulder were used: coronal, sagittal, and axial proton density fat suppression; sagittal T1; and coronal T1FS. Patients were given an intravenous injection of gadolinium at 0.2 mL/kg (up to 15 mL), and after a delay of 10–15 minutes, during which the joint was exercised, and post-contrast coronal and axial T1FS imaging was performed.
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