Magnetom avanto mri scanner

Manufactured by Siemens

Sourced in Germany

The Magnetom Avanto MRI scanner is a magnetic resonance imaging (MRI) system manufactured by Siemens. It is designed to capture high-quality images of the human body using a strong magnetic field and radio waves. The Magnetom Avanto MRI scanner is capable of producing detailed images of various body structures and organs, which can be used for diagnostic purposes.

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Lab products found in correlation

Argus software, by Siemens (1 mentions)

Close spelling variants of this product

Magnetom Avanto 1.5 Tesla MRI scanner Magnetom Avanto 1.5 T MRI scanner Magnetom Avanto MRI Magnetom Avanto scanner Avanto MRI scanner Magnetom Avanto Avanto scanner Magnetom scanner MRI scanner Siemens scanners

6 protocols using magnetom avanto mri scanner

TWIST MRA for Central Venous Patency Assessment

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We retrospectively reviewed patients who successfully underwent TWIST MR angiography at our centre for the evaluation of central venous patency with a view to obtaining access. 70% of patients were on long term total parenteral nutrition (TPN) for intestinal failure, the remaining 30% were patients with cystic fibrosis requiring long term lines for antibiotic administration).
TWIST MRA in parallel with the GeneRalized Autocalibrating Partially Parallel Acquisitions (GRAPPA) algorithm was performed using a 1.5T Siemens Magnetom Avanto MRI scanner. Gadolinium contrast (dose of 0.1 mls per kg), was administered at a rate of 2 mls per second for each examination.

Lawton C.B., Rodrigues J.C., Armstrong L, & Manghat N.E. (2016). TWIST-MR-Angiography to aid central venous access in challenging patients. A single centre experience. Journal of Cardiovascular Magnetic Resonance, 18(Suppl 1), T8.

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MRI Phantom Imaging for R2* Evaluation

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Eight cylindrical 1-L polystyrene bottles were filled with a 2% solution of agar (Sigma–Aldrich. St. Louis, MO) in water and doped with various amounts of Bionized NanoFerrite starch particles (micromod Partikeltechnologie GmbH, Rostock, Germany) to obtain a wide range of R₂* values. Phantoms were scanned at the iso-center of a clinical 1.5T whole-body MAGNETOM Avanto MRI scanner (Siemens Medical Solutions, Malvern, PA). A single slice was acquired with field of view (FOV) = 300 × 300 mm²; matrix size = 128 × 128; slice thickness (SL) = 5 mm; and TR = 200 ms. TE ranged from 1.20 ms to 27.86 ms with an echo spacing of 0.86 ms, which yielded 32 echoes. To obtain images with different SNR levels, image series were acquired with different FAs (4°, 8°, and 35°) with a single average. Reference R₂* maps were obtained by using the NLM fit on a set of images with very high SNR obtained by collecting a dataset with 320 averages, 64 echoes with TE ranging from 1.20 ms to 55.38 ms with an echo spacing of 0.86 ms, and all other parameters identical to those given above. Circular ROIs were drawn on each phantom bottle. Mean R₂* values from each ROI were obtained for the different algorithms and compared to the phantom “reference” dataset.

Song R., Loeffler R.B., Holtrop J.L., McCarville M.B., Hankins J.S, & Hillenbrand C.M. (2017). Fast Quantitative Parameter Maps without Fitting: Integration Yields Accurate Mono-exponential Signal Decay Rates. Magnetic resonance in medicine, 79(6), 2978-2985.

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MRgHIFU Procedure for Precise Treatment

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The MRgHIFU procedure was conducted with the clinical extracorporeal JM 5100 MRgHIFU system (Chongqing Haifu Tech Co, Ltd., Chongqing, China) fully integrated into a 1.5T Magnetom Avanto MRI scanner (Siemens Medical Systems, Berlin, Germany) to provide a real-time temperature mapping for treatment control (1 (link)). The sonication energy was produced by a focused piezoelectric ceramic composite transducer with a diameter of 18 cm, a focal length of 15 cm, and an operating frequency of 1.0 MHz. The location of the acoustic focus can be electronically controlled, and its diameters were 6 mm along the beam axis and 2 mm in the transverse direction. With use of computer control, the integrated transducer can be moved smoothly in 6 directions.

Wang Y., Wang Z.B, & Xu Y.H. (2018). Efficacy, Efficiency, and Safety of Magnetic Resonance-Guided High-Intensity Focused Ultrasound for Ablation of Uterine Fibroids: Comparison with Ultrasound-Guided Method. Korean Journal of Radiology, 19(4), 724-732.

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Multimodal Brain Imaging Protocol

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Structural and functional brain images were collected using a 1.5 T Magnetom Avanto MRI scanner (Siemens Medical Systems, Erlangen, Germany) with an 18-channel head coil. Three 8-min functional runs were acquired; (1) scanner noise, (2) preferred music, and (3) aversive auditory stimulation, presented in counterbalanced order. Each resting-state scan was followed by a 5-min structural scan to wash-out cross-over effects of auditory stimulation. The functional runs were acquired using a T2^*-weighted echo-planar imaging (EPI) sequence (163 volumes, 31 axial slices, 3 × 3 × 4 mm voxel size, TR = 3,000 ms, TE = 50 ms, flip angle = 90°, matrix size = 64 × 64 mm, FOV = 192 × 192 mm). The first three volumes of each functional scan were discarded to reduce initial fluctuations of the MRI signal. 3D T1-weighted anatomical images were acquired with a magnetization-prepared rapid gradient echo (MPRAGE) method. Each anatomical image consisted of 192 sagittal slices, with 256 × 256 mm matrix size and 1 mm slice thickness.

Boltzmann M., Schmidt S.B., Gutenbrunner C., Krauss J.K., Stangel M., Höglinger G.U., Wallesch C.W., Münte T.F, & Rollnik J.D. (2021). Auditory Stimulation Modulates Resting-State Functional Connectivity in Unresponsive Wakefulness Syndrome Patients. Frontiers in Neuroscience, 15, 554194.

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Phase-Contrast Cardiac MRI Stroke Volume

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Phase-contrast CMR was performed on a 1•5-T MAGNETOM Avanto MRI scanner (Siemens, Munich, Germany) during simultaneous electrocardiogram recording and continuous breathing. A velocity-encoded, k-space-segmented, gradient-echo sequence was used to generate 30 matched pairs of phase and magnitude images (echo time/repetition time/flip angle/slice thickness/temporal resolution/image matrix/field of view/in-plane resolution/velocity encoding range: TE 2•18/TR 29•9/30°/5 mm/dependent on heart rate/256 × 256/320 mm × 240 mm/1•25 mm × 1•25 mm/0-150 cm s-1). Retrospec ve electrocardiogram gating was used to ensure complete cardiac cycle coverage. The average acquisition time was 2-3 min, depending on heart rate. Left ventricular stroke volume was measured 2-4 cm above the aortic valve and distal to the coronary arterial ostia (Mauritz et al., 2008) . Imaging analysis was performed using the Argus software (Siemens, Erlangen, Germany).

Panagiotou M., Vogiatzis I., Jayasekera G., Louvaris Z., Mackenzie A., Mcglinchey N., Baker J.S., Church A.C., Peacock A.J, & Johnson M.K. (2018). Validation of impedance cardiography in pulmonary arterial hypertension. Clinical physiology and functional imaging, 38(2).

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Multishell Diffusion MRI for NODDI Analysis

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MRI data were acquired on a 1.5T MAGNETOM Avanto MRI scanner (Siemens Healthcare GmbH, Erlangen, Germany). Multishell diffusion-weighted data were acquired with single-shot, twice-refocused pulse gradient spin-echo echo planar imaging (voxel size 2.5 3 2.5 3 2.5 mm 3 , 60 axial slices, matrix size 96 3 96, field of view 240 3 240 mm 2 , repetition time 5 8400 ms, echo time 5 99 ms). Three b-value shells were acquired (9 directions with b 5 300 s/mm 2 , 30 directions with b 5 800 s/mm 2 , and 60 directions with b 5 2400 s/mm 2 ), optimized for NODDI (21) . Eleven images with no diffusion weighting (b E 0 s/mm 2 ) were acquired. Total acquisition time was 17 minutes.

Rae C.L., Davies G., Garfinkel S.N., Gabel M.C., Dowell N.G., Cercignani M., Seth A.K., Greenwood K.E., Medford N, & Critchley H.D. (2017). Deficits in Neurite Density Underlie White Matter Structure Abnormalities in First-Episode Psychosis. Biological psychiatry, 82(10).

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