3D T1-weighted anatomic MRI (structural MRI, sMRI) images for each participant were obtained using a 3-T scanner (Signa HDxt 3.0T, General Electric HD 750 w, Buckinghamshire, UK) at the First Affiliated Hospital of Anhui Medical University. The T1-weighted images were acquired using a brain volume sequence with the following parameters: repetition time = 8.676 ms, echo time ratio = 3.184 ms, flip angle = 8°, field of view = 256 × 256 mm2, matrix size = 256 × 256, slice thickness = 1 mm, voxel size = 1 × 1 × 1 mm3, and number of sections = 188.
Signa hdxt 3.0t
Manufactured by GE Healthcare
Sourced in United States, United Kingdom, Germany, Japan
The Signa HDxt 3.0T is a magnetic resonance imaging (MRI) system developed by GE Healthcare. It operates at a field strength of 3.0 Tesla, providing high-resolution imaging capabilities. The system is designed to enable efficient and reliable data acquisition for a variety of medical imaging applications.
Automatically generated - may contain errors
Lab products found in correlation
Discovery mr750 3.0t, by GE Healthcare (3 mentions)
Intera 3.0 t, by Philips (2 mentions)
Magnetom trio, by Siemens (2 mentions)
Aquarius intuition software, by TeraRecon (1 mentions)
Discovery mr750w 3.0 t, by GE Healthcare (1 mentions)
Eight channel phased array head coil, by GE Healthcare (1 mentions)
Multiskan mk3, by Thermo Fisher Scientific (1 mentions)
Nano zs90, by Malvern Panalytical (1 mentions)
Ftir spectroscopy, by Bruker (1 mentions)
Optima 5300 dv, by PerkinElmer (1 mentions)
Tecnai g2, by Thermo Fisher Scientific (1 mentions)
D8 advance, by Bruker (1 mentions)
Magnetom avanto 1.5t, by Siemens (1 mentions)
Signa hdx 1.5t, by GE Healthcare (1 mentions)
Trio tim 3.0t, by Siemens (1 mentions)
Signa horizon 1.5t, by GE Healthcare (1 mentions)
40 protocols using signa hdxt 3.0t
1
3D T1-weighted Anatomic MRI Protocol
2
MR-Guided Focused Ultrasound Experimental Setup
3
Orbital Tissue Volumes Measured by MRI
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
All patients were examined using a 3.0-tesla MRI unit (Signa HDxt 3.0 T; GE Healthcare, Little Chalfont, UK) at Shiga University of Medical Science Hospital. Coronal, axial, and sagittal MRI images using T2-weighted spin echo were used to measure the volumes of each tissue in the orbit in a manner similar to that described in previous studies [23 (link), 24 (link)]. The slice thickness of the images was 1.5 mm.
The cross-sectional areas (CSAs) of the orbital fat, extraocular muscles, optic nerve, and eyeball were measured by tracing outlines of the tissue on the images using Aquarius iNtuition software (TeraRecon, San Mateo, Foster City, CA, USA) (Fig 1 ). CSAs on axial images were used for the orbital fat, lateral rectus, medial rectus, superior oblique, eyeball, and optic nerve measurements. CSAs on sagittal images were used for the superior rectus and inferior rectus measurements. CSAs on coronal images were used for the inferior oblique measurements. The orbital fat was traced together with the lacrimal gland because it was difficult to separate them on the MRI images. The superior rectus was traced along with the levator palpebrae muscle for the same reason. The volumes of the tissues were calculated by multiplying the sum of the CSAs × the slice increment. The volumes of the images were measured in a masked fashion by one technician (F.K.).
The cross-sectional areas (CSAs) of the orbital fat, extraocular muscles, optic nerve, and eyeball were measured by tracing outlines of the tissue on the images using Aquarius iNtuition software (TeraRecon, San Mateo, Foster City, CA, USA) (
4
Multimodal Brain MRI Analysis Protocol
5
3T MRI Scanning of Patients
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Magnetic resonance imaging type: GE Signa HDxt 3.0T, the U.S.A. All patients were scanned in the same posture.
6
Resting-state fMRI data acquisition
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Resting-state fMRI was performed on a GE Signa HDxt 3.0 T MRI scanner using an eight-channel phased-array head coil. Each participant lay supine with their head snugly fixed by foam pads. The participant was asked to keep still as long as possible and to keep his/her eyes closed but remain awake. Resting-state fMRI was obtained using an echo-planar imaging sequence with protocols of TR = 2000 ms, TE = 30 ms, flip angle = 90°, FOV 240 mm × 240 mm, matrix = 64 × 64, voxel size 3.75 mm × 3.75 mm × 4.00 mm, 35, 37 or 39 axial slices, 210 volumes acquired in 7 min.
7
Structural MRI Acquisition and Analysis
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
T1‐weighted structural MRI scans were acquired at baseline using Magnetom Impact 1.0T (n = 121) (Siemens, Erlangen, Germany) and SignaHDxt 3.0T (n = 106) (General Electric, Milwaukee, WI) scanners using the following sequences: inversion‐recovery prepared fast spoiled gradient recalled sequence (IR‐FSPGR) at 3.0T (176 slices, matrix= 256 × 256, 1 × 0.9 × 0.9 mm3, TE = 3 ms, TR = 7.8 ms, TI = 450 ms, flip angle 12°) and magnetization prepared rapid acquisition gradient‐echo (MPRAGE) at 1.0T (168 slices, matrix= 256 × 256, voxel size = 1 × 1 × 1.5 mm3, echo time (TE) = 7 ms, repetition time (TR) = 15 ms, inversion time (TI) = 300 ms, flip angle, 15°). A standard circular head coil was used and head motion was restricted using expandable foam cushions. Statistical parametric mapping version 12 (SPM12), operating in MATLAB (r2012) was used to segment images (resliced: 2 × 2 × 2 mm3) into grey matter, white matter and cerebrospinal fluid, and to estimate total grey matter volumes in native space. All segmentations were visually checked for segmentations errors and none had to be excluded.
8
Multimodal MRI Prostate Imaging Protocol
9
MRI Imaging Sequence Parameters
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
MRI was performed using a 3.0-T MR imager (Signa, HDxt, 3.0 T; General Electric Healthcare, Milwaukee, WI) with surface coil (limbs with 3 inch coil, shoulder with shoulder coil or soft coil, and torso and hips with body coil). The conventional MR scanning sequences included spin echo (SE) T1WI (repetition time/echo time [TR/TE], 650 ms/min full; reconstruction matrix size, 288 × 224; slice thickness/slice spacing, 4–6 mm/0–1 mm), fast spin echo (FSE) T2WI (TR/TE, 3975 ms/68 ms; number of signals acquired, 4; reconstruction matrix size, 256 × 224; slice thickness/slice spacing, 4–6 mm/0–1 mm), fat suppression T2WI and PDWI (TR/TE, 2000 ms/42 ms; number of signals acquired, 3; reconstruction matrix size, 256 × 224; slice thickness/slice spacing, 4–6 mm/0–1 mm). If necessary, fat suppression T1WI was performed. Field of view (FOV), which could be changed according to the tumors’ size, was 15 to 40 cm with slice thickness 4 to 6 mm and space 0 to 1 mm.
10
High-Resolution Orbital Imaging of GDDs
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
High-resolution orbital images were obtained using a 3-Tesla scanner (Signa HDxt 3.0T, GE Healthcare, Milwaukee, WI) in combination with head-array coils with the sequences of three-dimensional fast imaging employing steady-state acquisition (3D-FIESTA) (Fig 1 ). The imaging parameters included repetition time of 5.6 ms, echo time of 2.7 ms, field-of-view of 180 mm * 180 mm, matrix size of 320 * 288, and slice thickness of 1.0 mm with the overlap thickness of 0.5 mm, resulted in in-plane resolution of 0.56 mm * 0.63 mm. Coronal plane was taken perpendicular to the plane that containing both optic nerves. The acquisition time for whole scanning was typically 3 to 3.5 min. Subjects were coached repeatedly to avoid unnecessary movements during scanning. GDDs implanted were not ferromagnetic and were MR imaging safe. The specific absorption rate of the MR imaging of this study was calculated to be less than 2.0 W/kg that indicating “less invasive” for the patients. No patient felt warmth from devices during the scans. All scans were obtained about 6 months after shunt implantation to facilitate complete healing of the conjunctiva and orbital tissues, absorption of the ligating suture, stent graft removal (with the BGI), and IOP stabilization after the hypertensive phase (with the AGV) [15 (link)].
About PubCompare
Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.
We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.
However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.
Ready to get started?
Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required
Revolutionizing how scientists
search and build protocols!