Gyroscan acs nt

Manufactured by Philips

Sourced in Netherlands

The Gyroscan ACS-NT is a magnetic resonance imaging (MRI) system developed by Philips. It is a diagnostic imaging device that uses strong magnetic fields and radio waves to generate detailed images of the body's internal structures. The core function of the Gyroscan ACS-NT is to provide healthcare professionals with high-quality medical images for diagnosis and treatment planning.

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Lab products found in correlation

Achieva, by Philips (3 mentions) Lightspeed 16, by GE Healthcare (1 mentions) Iu22 scanner, by Philips (1 mentions) Ingenia, by Philips (1 mentions) Gyroscan, by Philips (1 mentions) Magnevist, by Bayer (1 mentions)

Close spelling variants of this product

Gyroscan (19 citations) Gyroscan NT (8 citations) Gyroscan ACS-NT scanner (4 citations) ACS-NT (2 citations)

29 protocols using gyroscan acs nt

MRI-based Brain Imaging Protocol for Parkinson's Disease

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All patients with PD and normal controls were scanned with a 1.5 tesla MRI (Gyroscan ACS-NT; Philips Medical Systems, Best, the Netherlands). To maintain consistent positioning of individuals' heads, the pilot images of coronal, sagittal, and axial T1 MR images with fast-field echo sequence were acquired using the following MRI scanning variables: slice thickness = 10 mm with a gap of 10 mm, repetition time (TR/echo time (TE)) = 15/5.2 msec, in-plane matrix = 256 × 256, field of view (FOV) = 25 × 25 cm, 4 slices in each orientation, and flip angle = 20°.
Coronal 3D T1-weighted turbo field echo MRI data were acquired with the following protocols: slice thickness = 1.3 mm without gap, number of slices = 160, scan time = 10 min 13 sec, TR/TE = 10/4.3 msec, number of excitations = 1, image matrix = 256 × 256, FOV = 22 × 22 cm², and flip angle = 8°. To correct the head tilts in the MRI bore, coronal 3D T1 MRI was performed perpendicular to the long axis from the anterior commissure to the posterior commissure in the midsagittal plane of the interhemispheric commissure before MRI scans. The voxel size of the 3D MRI was 0.86 × 0.86 × 1.30 mm³ (x × y × z, respectively).

Park J.W., Lee C.N., Sim Y., Ham H.K., Tae W.S, & Kim B.J. (2019). Automated Subfield Volumetric Analysis of Hippocampus in Patients with Drug-Naïve Nondementia Parkinson's Disease. Parkinson's Disease, 2019, 8254263.

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Standardized MRI brain scanning protocol

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MR imaging of the brain was performed on a 1.5 T whole-body system (Gyroscan ACS-NT, Philips Medical Systems, Best, the Netherlands) using a standardized scan protocol.^{11 (link)} Transversal T1-weighted [repetition time (TR) = 235 ms; echo time (TE) = 2 ms], T2-weighted [TR = 2200 ms; TE = 11 ms], fluid-attenuated inversion recovery (FLAIR) [TR = 6000 m; TE = 100 ms; inversion time (TI) = 2000 ms] and T1-weighted inversion recovery images [TR = 2900 ms; TE = 22 ms; TI = 410 ms] were acquired with a voxel size of 1.0 × 1.0 × 4.0 mm³ and contiguous slices.^{12 (link)}

Ghaznawi R., Vonk J.M., Zwartbol M.H., de Bresser J., Rissanen I., Hendrikse J, & Geerlings M.I. (2022). Low-grade carotid artery stenosis is associated with progression of brain atrophy and cognitive decline. The SMART-MR study. Journal of Cerebral Blood Flow & Metabolism, 43(2), 309-318.

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MRI Protocol for Brain Imaging

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MR investigations were performed on a 1.5 T whole-body system (Gyroscan ACS-NT, Philips Medical Systems, Best, The Netherlands). The protocol consisted of a transversal T1-weighted gradient-echo sequence (repetition time (TR)/echo time (TE): 235/2 ms; flip angle, 80°), a transversal T2-weighted turbo spin-echo sequence (TR/TE: 2200/11 and 2200/100 ms; turbo factor 12), a transversal T2-weighted fluid attenuating inverse recovery (FLAIR) sequence (TR/TE/inversion time (TI): 6000/100/2000 ms) and a transversal inversion recovery (IR) sequence (TR/TE/TI: 2900/22/410 ms) (field of view mm; matrix size; slice thickness, 4 mm; no gap; 38 slices).

Kanhai D.A., de Kleijn D.P., Kappelle L.J., Uiterwaal C.S., van der Graaf Y., Pasterkamp G., Geerlings M.I, & Visseren F.L. (2014). Extracellular vesicle protein levels are related to brain atrophy and cerebral white matter lesions in patients with manifest vascular disease: the SMART-MR study. BMJ Open, 4(1), e003824.

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Multimodal Imaging of Head and Neck Structures

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US was performed using a Philips iU22 scanner (Philips Medical Solutions, Bothell, WA) with a high-resolution (5–12 MHz) real-time scanner. Color Doppler was also performed to assess the vascularity. Longitudinal and transverse images were taken from the clavicles to the mandible, with the patient's neck extended and their shoulders lowered. CT was performed using a Lightspeed 16 (GE Healthcare, Tokyo, Japan) and a dual-source CT scanner (Definite Flash; Siemens Healthcare, Forchheim, Germany). Craniocaudal coverage extended from the skull to the mediastinum, and the images were reconstructed using a 5-mm slice thickness. Helical scans were carried out 60 s after intravenous injection of a contrast medium (ioversol; 80–90 mL; 320 mgI/mL; Tyco, Canada). MRI was performed using a 3-T scanner (Gyroscan ACS-NT; Phillips, Best, the Netherlands) and involved transverse, coronal, and sagittal coverage from the skull to the mediastinum. The scans used a 5-mm slice thickness and included T1-weighted, T2-weighted, and short-tau inversion recovery sequences.

Chen Z., Fu J., Shao Q., Zhou B, & Wang F. (2018). 99mTc-MIBI single photon emission computed tomography/computed tomography for the incidental detection of rare parathyroid carcinoma. Medicine, 97(40), e12578.

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Comprehensive MRI Protocol for Brain Assessment

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A 1.5 T whole-body system (Gyroscan ACS-NT, Philips Medical Systems, Best, the Netherlands) was used performing a standard protocol: a T1-weighted sequence (3 D acquisition; repetition time (TR)/echo time (TE): 7.0/3.2 ms; voxel size = 0.94 × 0.94 ×1.0 mm³ isotropic), a T1-weighted inversion recovery sequence (2 D acquisition; TR/TE: 2900/22 ms; TI = 410 ms), a T2-weighted sequence (2 D acquisition; TR/TE: 2200/10.5 ms), and a fluid-attenuated inversion recovery (FLAIR) sequence (2 D acquisition; TI/TR/TE: 2000/6000/100 ms). All two-dimensional sequences were acquired with a voxel size of 1.0 × 1.0 × 4.0 mm³ and contiguous slices. A phase-contrast MR angiography sequence (2 D slice acquisition; TR/TE: 16/9 ms; voxel size =0.98 × 0.98 × 5.00 mm³; velocity sensitivity 100 cm/s; acquisition at the level of the proximal cavernous segment of the ICA and prepontine basilar artery) was also performed.

Zwartbol M.H., van der Kolk A.G., Kuijf H.J., Witkamp T.D., Ghaznawi R., Hendrikse J, & Geerlings M.I. (2020). Intracranial vessel wall lesions on 7T MRI and MRI features of cerebral small vessel disease: The SMART-MR study. Journal of Cerebral Blood Flow & Metabolism, 41(6), 1219-1228.

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Cardiac MRI Assessment in CRT Patients

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Twenty-three patients (including 16 patients with CRT), were examined using a 1.5-T MRI scanner (Gyroscan ACS-NT, Philips Medical Systems, Best, the Netherlands) between January 2010 and March 2014, and 12 patients (including 9 patients with CRT) using a 3.0-T MRI scanner (Ingenia, Philips Medical Systems, Best, the Netherlands) between April 2014 and December 2016 with a 4-element phased-array coil in the supine position with breath-holds during expiration and ECG gating.
Cine images were acquired using cine-balanced turbo field-echo sequences (repetition time, 2.8 ms; echo time, 1.4 ms; flip angle, 45°; slice thickness, 8 mm; field of view, 380 mm; matrix size, 176×193; SENSE factor 2). There were 20 phases per cardiac cycle, resulting in a mean temporal resolution of 45 ms. LV end-diastolic volume (LVEDV) and LVESV were analyzed semi-automatically at the basal to apical levels using LV short-axis (SA) cine images, followed by manual correction with available software (Ziostation 2; Ziosoft, Tokyo, Japan). End-diastolic and end-systolic phases were identified visually on those images with the largest and smallest LV cavity areas, respectively.

Nakao R., Nagao M., Fukushima K., Sakai A., Watanabe E., Kawakubo M., Sakai S, & Hagiwara N. (2019). Prediction of Cardiac Resynchronization Therapy Response in Dilated Cardiomyopathy Using Vortex Flow Mapping on Cine Magnetic Resonance Imaging. Circulation Reports, 1(8), 333-341.

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MRI-based Brain Lesion Assessment Protocol

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MRI of the brain was performed on a 1.5 T whole-body system (Gyroscan ACS-NT, Philips Medical Systems, Best, the Netherlands) using a standardized scan protocol consisting of two-dimensional multi-slice sequences. Transversal T1-weighted (gradient-echo; repetition time (TR) = 235 ms; echo time (TE) = 2 ms), T2-weighted (turbo spin-echo; TR = 2200 ms; TE = 11 ms), FLAIR (turbo spin-echo; TR = 6000 m; TE = 100 ms; inversion time (TI) = 2000 ms), and T1-weighted inversion recovery images (turbo spin-echo; TR = 2900 ms; TE = 22 ms; TI = 410 ms) were acquired. All MR sequences had a resolution of 1.0 × 1.0 × 4.0 mm³ and consisted of 38 contiguous slices (field of view 230 mm × 230 mm; matrix size 180 × 256, slice gap 0 mm).
Lacunes were visually rated by a neuroradiologist (TW) blinded to patient characteristics on the T1-weighted, T2-weighted, and FLAIR images. We defined lacunes as focal lesions between 3 to 15 mm according to the STRIVE criteria.^{5 (link)} Brain infarcts were visually rated by a neuroradiologist (TW) blinded to patient characteristics on the T1-weighted, T2-weighted and FLAIR images.

Ghaznawi R., Geerlings M.I., Jaarsma-Coes M.G., Zwartbol M.H., Kuijf H.J., van der Graaf Y., Witkamp T.D., Hendrikse J, & de Bresser J. (2018). The association between lacunes and white matter hyperintensity features on MRI: The SMART-MR study. Journal of Cerebral Blood Flow & Metabolism, 39(12), 2486-2496.

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High-Resolution 3D T1-Weighted MRI Acquisition

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All participants were scanned with a 1.5-T MRI scanner (Gyroscan ACS-NT; Philips Medical Systems, Best, the Netherlands). A coronal 3D T1-weighted turbo field echo MRI was obtained with the following scanning variables: 1.3 mm thickness; no gap; 160 slices; repetition time/echo time, 10/4.3 msec; number of signal averages, 1; matrix, 256×256 mm; field of view, 22×22 cm; and flip angle, 8°. To improve the signal-tonoise ratio, no sensitivity encoding (SENSE) acceleration factor was applied [36 ] and so, the total scanning time for a T1 MRI was relatively long (10 min 13 sec.). Coronal slices were obtained perpendicular to the long axis of the anterior commissure to the posterior commissure in the midsagittal plane. The final voxel size was 0.86×0.86×1.30 mm (x×y×z).

Choi K.W., Kwon S., Pyun S.B, & Tae W.S. (2020). Shape Deformation in the Brainstem of Medication-Naïve Female Patients with Major Depressive Disorder. Psychiatry Investigation, 17(5), 465-474.

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Comprehensive Brain MRI Evaluation Protocol

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MR imaging of the brain was performed on a 1.5T MRI system (Gyroscan ACS-NT,
Philips Medical Systems, Best, The Netherlands) using a standardized scan
protocol. Transversal T1-weighted (repetition time (TR) = 235 ms; echo time
(TE) = 2 ms), T1-weighted inversion recovery (TR = 2900 ms; TE = 22 ms;
TI = 410 ms), T2-weighted (TR = 2200 ms; TE = 11 ms) and FLAIR (TR = 6000 ms;
TE = 100 ms; TI = 2000 ms) images were acquired with a voxel size of
0.9 × 0.9 × 4.0 mm^{3 (link)} and 38 contiguous slices. Cerebral infarcts (cortical, subcortical and
lacunes) were rated by a neuroradiologist according to the STRIVE criteria.^{3 (link)} The location and affected flow territory were rated for every cerebral infarct.^{17 (link)} The flow through both internal carotid arteries and the basilar artery
were determined by phase contrast imaging and summed to calculate the total CBF (ml/min).^{17 (link)}

Jaarsma-Coes M.G., Ghaznawi R., Hendrikse J., Slump C., Witkamp T.D., van der Graaf Y., Geerlings M.I, & de Bresser J. (2018). MRI phenotypes of the brain are related to future stroke and mortality in patients with manifest arterial disease: The SMART-MR study. Journal of Cerebral Blood Flow & Metabolism, 40(2), 354-364.

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MRI Neuroimaging Protocol for Brain Analysis

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The MR images were obtained using a 1.5Twhole-body system (Gyroscan ACS-NT, Philips Medical Systems, Best, the Netherlands). The protocol consisted of a transversal T1-weighted gradient-echo sequence (repetition time (TR)/echo time (TE): 235/2 ms; flip angle, 80°), a transversal T2-weighted turbo spin-echo sequence (TR/TE:2200/11 ms and 2200/100 ms; turbo factor 12), a transversal T2-weighted fluid attenuating inverse recovery (FLAIR) sequence (TR/TE/inversion time (TI): 6000/100/2000 ms) and a transversal inversion recovery (IR) sequence (TR/TE/TI: 2900/22/410 ms) (field of view (FOV) 230 × 230 mm; matrix size, 180 × 256; slice thickness, 4.0 mm; no gap; 38 slices) (Geerlings et al. 2009 (link); Knoops et al. 2010 (link)). For hippocampus volumes T1-weighted 3D fast-field-echo(FFE) sequences were performed (TR/TE: 7.0/3.2 ms; flip angle, 8°; FOV 240 mm; matrix size, 240 × 256; slice thickness 1.0 mm; no gap; 170 slices) (Knoops et al. 2009 (link)).

Blom K., Koek H.L., van der Graaf Y., Zwartbol M.H., Wisse L.E., Hendrikse J., Biessels G.J, & Geerlings M.I. (2018). Hippocampal sulcal cavities: prevalence, risk factors and association with cognitive performance. The SMART-Medea study and PREDICT-MR study. Brain Imaging and Behavior, 13(4), 1093-1102.

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