Seven patients were examined with a 3.0 T whole-body MR system (Signa; GE Medical Systems), and two patients were examined with a 1.5 T twin-speed superconducting MR system (GE Signa with EXCITE II) with 5–8 mm slice thickness and 0.5–2.0 mm gap spacing. MRI sequences included in-phase (IP, TR = 150–230 ms, TE = 1.4–2.4 ms) and opposed-phase (OP, TR = 150–240 ms, TE = 3.2–4.6 ms) T1-weighted axial spoiled gradient echo imaging (SPRG) sequences and fat-saturated T2-weighted axial fast spin echo (FSE) sequences (TR = 3200–4000 ms, TE = 78–92 ms). Intravenous dynamic contrast-enhanced images were obtained in all 9 patients. For the 3T MRI scanner, dynamic contrast-enhanced images were acquired using liver acquisition with a volume acceleration (LAVA) sequence (TR = 2.6–3.2 ms, TE = 1.2–1.5 ms); for the 1.5 T MRI scanner, dynamic contrast-enhanced images were obtained using the T1-weighted FSPGR sequence (TR = 150–180 ms, TE = 1.4–1.7 ms) with fat suppression. The delay time was 20 seconds for CMP, 60 seconds for Nephrographic phase (NP), and 120 seconds for the coronal delayed phase after the intravenous injection of 15 ml of Magnevist (0.1 mmol/kg; Bayer Schering, Pharma AG, Berlin, Germany) at a rate of 2 ml/s.
Excite 2
Manufactured by GE Healthcare
Sourced in United States
The Excite II is a laboratory equipment product from GE Healthcare. It is designed to perform high-quality imaging tasks. The core function of the Excite II is to capture and analyze images for various research and diagnostic applications.
Automatically generated - may contain errors
Lab products found in correlation
8 protocols using excite 2
1
MRI Assessment of Liver and Kidney Lesions
2
3T MRI Acquisition Protocol
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Magnetic resonance imaging studies were performed on a 3T GE Excite II scanner (General Electric, Wakashua, Milwaukee, WI). Standard imaging gradients with a maximum strength of 40 m/Tm and slew rate 150 Tm/s were used. All data were acquired using a body coil for transmission, and eight‐channel phased array coil for reception. The scanning protocol also included a coronal T1‐weighted volumetric acquisition sequence with 1.1‐mm thick slices. No parallel acquisition techniques were used.
3
Multimodal Neuroimaging Examination Protocol
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We acquired all imaging data on a 3T GE Excite II magnetic resonance imaging
(MRI) scanner (GE Medical Systems, Milwaukee, WI, USA). Our scanning protocol
included a structural MRI scan acquired using a 3D inversion recovery prepared
fast spoiled gradient recalled (IR-FSPGR) sequence (slice thickness = 1.1 mm,
spatial positions = 124, flip angle = 20°, field of view (FoV) = 280 mm, echo
time (TE) = 2.844 ms, repetition time (TR) = 7.068 ms, inversion time (TI) = 450
ms, matrix = 256×256). This structural MRI scan was used for co-registration of
the functional volumes. The scanning protocol further included a resting state
MRI scan. This scan was acquired using an echo-planar imaging (EPI) sequence
(slice thickness = 3 mm, slice gap = 3.3 mm, flip angle = 75°, FoV = 240 mm, TE
= 30 ms, TR = 2000 ms, TI = 0 ms). We collected data for 256 time points, i.e.
the resting state scan lasted 512 s.
(MRI) scanner (GE Medical Systems, Milwaukee, WI, USA). Our scanning protocol
included a structural MRI scan acquired using a 3D inversion recovery prepared
fast spoiled gradient recalled (IR-FSPGR) sequence (slice thickness = 1.1 mm,
spatial positions = 124, flip angle = 20°, field of view (FoV) = 280 mm, echo
time (TE) = 2.844 ms, repetition time (TR) = 7.068 ms, inversion time (TI) = 450
ms, matrix = 256×256). This structural MRI scan was used for co-registration of
the functional volumes. The scanning protocol further included a resting state
MRI scan. This scan was acquired using an echo-planar imaging (EPI) sequence
(slice thickness = 3 mm, slice gap = 3.3 mm, flip angle = 75°, FoV = 240 mm, TE
= 30 ms, TR = 2000 ms, TI = 0 ms). We collected data for 256 time points, i.e.
the resting state scan lasted 512 s.
4
Cardiac MRI Fibrosis Assessment in Fabry Disease
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Magnetic resonance imaging (MRI) of the heart was carried out as part of stand assessment on a 1.5 T scanner (Excite II; GE medical systems, Milwaukee, WI). Late enhancement (LE) technique by gadolinium-contrast cardiac MRI examination was applied for the later-onset Fabry patients for assessment of fibrosis. The participants underwent a scan with spin echo double IR T1WI and T2WI pulse sequences and Fiesta pulse sequence, on axial, coronal, and variable scanning plans. Images were acquired 10 minutes after the intravenous injection of gadolinium. The myocardial delayed enhancement protocol included the pre-Gd axial FIESTA cine and grid tagging in 8 mm slice, and the post-Gd myocardial delayed enhancement of short axis/four-chamber views in 8-mm slice and oblique axial cine of ascending aorta in 8-mm slice to detect changes in tissue integrity in the left ventricle myocardium [33 (link)-35 (link)]. Severe myocardial fibrosis was defined by at least two affected left ventricular segments, which are followed by the American heart association guideline [36 (link)], and mild myocardial fibrosis was defined by one segment affected.
5
Cardiac MRI Imaging Protocol
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Cardiovascular magnetic resonance was performed with GE 1.5T Twin-speed Infinity with Excite II (GE Healthcare, Milwaukee, WI, United States) or 1.5T Siemens Magnetom Avanto (Siemens Medical Solutions, Erlangen, Germany). Fast imaging employing steady-state acquisition (FIESTA, GE) sequence or steady state-free precession (SSFP, Siemens) sequence was used for the retrospective ECG-synchronized cine scans of all participants. The segmented cine imaging was obtained in a stack of eight to ten contiguous short-axis slices (8 mm thickness, 2 mm gap) spanning the entire right and left ventricles from the base to the apex, during breath hold with expiration.
6
Dynamic Breast MRI Contrast Protocol
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MRI examinations were performed with a 1.5‐T MR scanner using a dedicated four‐channel phased array breast coil (Echospeed Plus with EXCITE II, GE Medical Systems, Milwaukee, USA). MRI protocols included a sagittal, 3D Vibrant SPGR sequence for dynamic imaging (TR = 6.4 ms, TE = 3.0 ms, TI = 7.0 ms, flip angle = 10°, slice thickness = 4 mm without any interslice gap, matrix size = 256 × 256, field of view = 20–22 cm, NEX = 1, ZIP2, and scan time per acquisition = 68 seconds); and an axial, fat‐suppressed, T1‐weighted pulse sequence with enhancement. The Vibrant sequence was continuously repeated six times, with one phase before and five phases after contrast enhancement for dynamic acquisition. The contrast agent (Gd‐DTPA) was injected into the antecubital vein by a power injector at a rate of 2.0 mL/second based on patient body mass (0.2 mmol/kg), followed by a saline flush. An initial fat‐saturated T1‐weighted precontrast scan was first collected. A first postcontrast scan was collected two minutes after contrast agent injection. Four subsequent postcontrast images were acquired at intervals of 90 seconds, resulting in five postcontrast images for each patient (t = 2, 3.5, 5, 6.5, and 8 minutes).
7
Cerebral Artery Stenosis Assessment
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All patients were imaged with a 1.5-T MRI scanner (Excite II; GE Medical Systems, Milwaukee, WI, USA) during hospitalization. Cranial 3D TOF MRA without magnetization transfer contrast was performed to detect the presence of focal narrowing in cerebral arteries. The severity of stenosis was determined with the ratio of arterial lumen at focal narrowing and arterial lumen at adjacent proximal part (lumenfocal narrowing/lumenproximal part) ×100%.
8
High-Resolution Structural and Resting-State fMRI Protocol
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All imaging data were acquired on a 3 T GE Excite II magnetic resonance imaging (MRI) scanner (GE Medical Systems, Milwaukee, WI, USA). The scanning protocol included a structural MRI scan acquired using a 3D inversion recovery prepared fast spoiled gradient recalled (IR-FSPGR) sequence (slice thickness = 1.1 mm, spatial positions = 124, flip angle = 20°, field of view (FoV) = 280 mm, echo time (TE) = 2.844 ms, repetition time (TR) = 7.068 ms, inversion time (TI) = 450 ms, matrix = 256 × 256). This structural MRI scan was used for co-registration of the functional volumes. The scanning protocol also included a resting state MRI scan. This scan was acquired using an echo-planar imaging (EPI) sequence (slice thickness = 3 mm, slice gap = 3.3 mm, flip angle = 75°, FoV = 240 mm, TE = 30 ms, TR = 2000 ms, TI = 0 ms). We collected data for 256 time points, i.e. the resting state scan lasted 512 s.
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