Avanto 1.5t mri

Manufactured by Siemens

Sourced in Germany

The Avanto 1.5T MRI is a magnetic resonance imaging system manufactured by Siemens. It is a 1.5 Tesla superconducting magnet designed for magnetic resonance imaging procedures.

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Lab products found in correlation

Multihance, by Bracco (1 mentions)

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Avanto 1.5T MRI unit Avanto 1.5T MRI scanner Avanto Tim 1.5T MRI scanner Magnetom Avanto 1.5T MRI system Avanto 1.5T

6 protocols using avanto 1.5t mri

Subscapularis Muscle Volume Analysis via 3D MRI

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We conducted a quantitative assessment of the subscapularis muscle volume using 3D reconstruction of MRIs in patients included in the group T and group I. The MRIs used in this study were obtained through an Avanto 1.5-T MRI (Siemens, Erlangen, Germany). The slice size of the images was 3.0 mm.
Briefly, muscle contours were assigned to every transverse slide of the MRI by using the ‘‘Livewire’’ option on the MIMIC 10.01 (for Intel x86 Platform III+; Materialise NV, Leuven, Belgium) medical imaging software. Volume masks were calculated from the assigned contours on the transverse slides. The subscapularis muscle was outlined on each scan, proceeding from the medial border of the scapular to the lesser tuberosity, which belongs to the subscapularis tendon. As the outline was hand-drawn in the MIMIC program, accuracy was low. To increase the accuracy, 3 orthopedic surgeons participated in taking measurements (Fig. 2, 3). Interobserver reliability was evaluated using intraclass correlation coefficients (ICCs) introduced by Shrout and Fleiss [18 (link)] Interobserver reliability was relatively high, with an ICCs of 0.836.

Jun Y.C., Moon Y.L., Bhardwaj H.D., Lim J.H, & Cha D.H. (2019). The Volume of Subscapularis Muscle Remains Unaffected by Supraspinatus Tendon Tears: Three-dimensionally Reconstructed Magnetic Resonance Imaging Analysis. Clinics in Shoulder and Elbow, 22(1), 3-8.

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Knee Sagittal Plane MRI for ACL Tears

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The total of 917 knees sagittal plane DICOM MRI were obtained from the clinical hospital center of Rijeka [23 (link)] archiving and communicating system. Images were 12-bit greyscale color along with assigned ACL diagnosis. An Avanto 1.5T MRI Siemens scanner which manufactured by Muenchen, Germany was used to record all volumes from 2007 to 2010, and for the collection of this data, proton density-weighted fat suppression. The authors have provided the metadata CSV for further understanding in the Table 2. Moreover samples of ACL diagnosis three classes are healthy (0 labels), partial (1 label) and fully ruptured (2 labels) in the Table 2. The total samples are 917 pickle images, out of this 690 are healthy, 172 partials and 55 complete ruptured.
The red square in the Figure 2a–c shows the three different severity of ACL tears. These are pickle MRI images of healthy, partial and fully ruptured tears respectively.

Javed Awan M., Mohd Rahim M.S., Salim N., Mohammed M.A., Garcia-Zapirain B, & Abdulkareem K.H. (2021). Efficient Detection of Knee Anterior Cruciate Ligament from Magnetic Resonance Imaging Using Deep Learning Approach. Diagnostics, 11(1), 105.

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Dynamic Contrast-Enhanced MRI Evaluation of LITT

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Standard of care imaging with added DCE-MRI was obtained within 48 hours prior to, within 48 hours after and then at weeks 2, 4, 6, and 10 after LITT. All patients were scanned on the same Siemen’s Avanto 1.5T MRI (Erlanger, Germany) identically using a tumor follow up standard of care imaging protocol that including anatomical imaging sequences (T1-weighted pre and post-contrast, T2-weighted images, FLAIR images) augmented with rapid T1-weighted DCE protocol (3D gradient echo, TR/TE = 4.8/2.4ms, matrix 256x256x44, voxel size 1.5x1.5x4mm, temporal resolution of 1 volume per 10 seconds for a total of 6 minutes or 36 volumes after the administration of Multihance (Gadobenate Dimeglumine, Bracco) 0.1 mmol/kg injected at a rate of 5 mL/s.

Leuthardt E.C., Duan C., Kim M.J., Campian J.L., Kim A.H., Miller-Thomas M.M., Shimony J.S, & Tran D.D. (2016). Hyperthermic Laser Ablation of Recurrent Glioblastoma Leads to Temporary Disruption of the Peritumoral Blood Brain Barrier. PLoS ONE, 11(2), e0148613.

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Comparative MRI Brain Imaging Protocol

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Using our hospital's German SIEMENS Avanto 1.5T MRI, each selected patient was scanned twice with an MRI-related sequence, 12-channel head coil collection, with an interval of 24 hours. The scanning sequence is as follows: (1) fast spin-echo sequence (3D-Sampling Perfection with Application -optimized Contrasts using different flip-angle Evolution Turbo Spin Echo (SPACE-TSE)) with optimized contrast sampling of 3-dimensional multiple inversion angles, as a reference for labyrinth shape, parameters: Repetition Time (TR) 1000 ms, Echo Time (TE) 132 ms, spatial resolution 0.7 mm × 0.7 mm × 1 mm, volume acquisition in all directions, scanning time 256 s and (2) liquid suppression reversal recovery sequence (3D-SPACE-FLAIR) using 3-dimensional multi-inversion angle optimization contrast sampling, scanning parameters: TR 6000 ms, TE 388 ms, Inversion Time (TI) 2100 ms, scan time 332s, spatial resolution 0.7mm × 0.7 mm × 1 mm, volume acquisition in all directions, scan time 338 s, including 3D-SPACE-TSE and 3D-SPACE-FLAIR. The scanning range level is the same, making the 2 comparable at the same level. The control group uses a 3.0T magnetic resonance machine (Simense Veri, Germany), 16-channel head coil acquisition, and the scan sequence and scan time are the same as the experimental group, and the spatial resolution is slightly different.²

Han Y., Zhang J., Lui L., Gao X., Wu L., Du X., Fan W., Xing Y, & Chen X. (2022). The Diagnostic Value of 1.5T Versus 3.0T Magnetic Resonance Imaging Intratympanic Gadolinium Inner Ear Enhancement in Patients with Meniere’s Disease. The Journal of International Advanced Otology, 18(5), 388-391.

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Comprehensive MRI Imaging Protocol for Musculoskeletal Assessment

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All patients were imaged on a GE HDX, GE 750w or Siemens Avanto 1.5T MRI machine. The MR acquisitions included sagittal proton density (PD) and intermediate-weighted (IW) fat-saturated sequences, coronal intermediate-weighted and axial T2-weighted fat-saturated sequences. Axial T2-weighted fat-saturated imaging parameters included an echo time (TE) of 85ms, repetition time (TR) of 5186ms, slice thickness of 4.0mm, slice spacing of 0.0mm, an echo train of 11, a field of view 16cm, a matrix size of 320 × 384, and a NEX of 2. Sagittal PD-weighted fat-saturated imaging parameters included a TE of 30ms, TR of 5186ms, slice thickness of 3.5mm, slice spacing of 0.0mm, an echo train of 13, a field of view of 16cm, a matrix size of 320 × 320 and a NEX of 2.

Trevor G., Carey F., Cahir J, & Toms A. (2016). Fluid signal changes around the knee on MRI are associated with increased volumes of subcutaneous fat: a case-control study. BMC Musculoskeletal Disorders, 17, 487.

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Carotid Artery MRI Assessment Protocol

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For MRI, a Siemens Avanto 1.5 T MRI with an 8-channel phased-array surface coil pair specific for carotid artery assessment (Siemens, Germany) was used. Scan sequences and parameters are summarized in Table 1.
Patients’ jaws and necks were stabilized by the 8-channel phased-array surface coil pair. Patients were instructed to remain calm and to avoid swallowing during scanning. First, bilateral carotid arteries were assessed through coronal thin slice T₂WI scan, in order to rebuild images and obtain carotid artery shape and stenosis position. Centering on the stenosis position, within a range of 20–24 mm (10–12 slices) in the longitudinal direction, axial 3DTOF, fast spin-echo (FSE)-based T₁WI, and T₂WI scans were carried out, and supplemented with fat suppression (FS). T₁WI, T₂WI, and 3DTOF sequence locations were kept consistent among patients. The contrast-enhanced T₁ protocol had to be excluded from the analyses because some patients were allergic to contrast medium or had poor renal function.

Xia J., Yin A., Li Z., Liu X., Peng X, & Xie N. (2017). Quantitative Analysis of Lipid-Rich Necrotic Core in Carotid Atherosclerotic Plaques by In Vivo Magnetic Resonance Imaging and Clinical Outcomes. Medical Science Monitor : International Medical Journal of Experimental and Clinical Research, 23, 2745-2750.

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