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Vantage titan 3t

Manufactured by Canon
Sourced in Japan

The Vantage Titan 3T is a high-performance magnetic resonance imaging (MRI) system developed by Canon. It features a 3-tesla superconducting magnet, which provides a strong magnetic field for high-quality imaging. The Vantage Titan 3T is designed for medical and research applications, enabling detailed visualization of anatomical structures and physiological processes.

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6 protocols using vantage titan 3t

1

3T MRI Imaging Protocol

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To obtain further information, MRI was performed in three cases using a MRI system with head quadrature radio frequency coil (Vantage Titan 3T, Canon), from which T1-, T2-, and T2*-weighted
images were obtained.
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2

3T MRI for Respiratory Motion Reduction

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MRI was performed using a 3 T unit (Vantage Titan 3 T, Canon Medical Systems, Tustin, CA, USA) and a transmit/receive coil. Scans obtained included dorsal T2 (TR 2469–5675, TE 120) weighted imaging (T2WI) with 2 mm slices, a 0.2 mm interspace gap, matrix = 320 × 320–352, and number of acquisitions = 1–3. The scans were performed using respiratory gating to eliminate respiratory motion.
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3

Multimodal MRI Acquisition Protocol

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All MRAs were performed on a 3T MRI scanner (Vantage Titan 3T; Canon Medical Systems, Tochigi, Japan) using a 16-channel phased-array coil (Atlas SPEEDER Body; Canon Medical Systems) combined with a 40-channel phased-array coil (Atlas SPEEDER Spine). UTE-mASTAR and TR-CEMRA were performed consecutively during the same examination. To determine the acquisition area and the location for placement of ASL pulse, axial, coronal, and sagittal field echo images without an inversion pulse were acquired using the following parameters: TR/TE, 50/2.3; flip angle, 30°; FOV, 400 × 400 mm; matrix, 256 × 128; number of slices, 7; and slice thickness, 10 mm.
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4

Prostate MRI Imaging Protocol

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All images were obtained under fasting conditions using a 3-T MR scanner (Vantage Titan 3-T; Canon Medical Systems, Tochigi, Japan) with a 16-channel phased-array coil (Atlas SPEEDER Body; Canon Medical Systems), combined with a 40-channel phased-array coil (Atlas SPEEDER Spine). The protocol for prostate MRI included the following steps: axial T1-weighted fast spin-echo imaging, axial and sagittal T2-weighted fast spin-echo imaging, and axial DWI. Axial DWI was performed using a multisection spin-echo, single-shot echo-planar imaging sequence. Following the acquisition at b values of 0 and 2000 s/mm2, the motion-probing gradient pulses were applied sequentially along three orthogonal orientations to acquire the DWI values. We reconstructed the ADC maps by calculating the ADC in each pixel of each slice. In addition, the ADC values were calculated for a pair of b values of 0 and 2000 s/mm2. The locations of axial T1-weighted imaging (T1WI), axial T2WI, and axial DWI were the same. Table 2 summarises the technical parameters of all MRI sequences assessed in this study. Despite obtaining dynamic contrast-enhanced images, we could not assess them as a part of this study.
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5

Sub-UTE MRA Imaging Protocol for Intracranial Arteries

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All MRIs and MRAs were obtained using a 3T MRI scanner (Vantage Titan 3T; Canon Medical Systems, Tochigi, Japan) using a 32ch phased array head coil. We obtained a sub-UTE MRA image by subtraction method without the ASL technique that has been generally employed in the previous study.5 8 Image acquisition protocol of sub-UTE MRA is shown in Fig. 1. Briefly, a sub-UTE MRA image was obtained by subtracting from the UTE image with the presaturation pulse from that without the presaturation pulse of the same slice. The imaging parameters of TOF MRA and sub-UTE MRA are summarized in Table 2. The number of segments is one of the key factors for acquiring a clear vessel image on the sub-UTE MRA, and therefore, we determined the appropriate number of segments for optimal visualization of the intracranial artery in healthy subjects before adapting to actual patients. This finding was obtained from our own institutional experience (see Discussion). The scan times of TOF MRA and sub-UTE MRA were 5 min 42 s and 3 min 42 s, respectively.
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6

Quantification of Brain Tumor Metabolites using 1H-MRS

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MRI system with a 32-channel head coil (Vantage Titan 3 T; Canon Medical Systems Corporation, Otawara, Japan) was used in this study. A single-voxel 1H-MRS with a point-resolved spectroscopy sequence was performed using the following standard parameters: TR/TE 2000 ms/144 ms and 2000 ms/35 ms, flip angle 90°, voxel size 15 × 15 × 15 mm (standard protocol, depending on the size and shape of the lesion), bandwidth 1.27 Hz/point, NEX 128. The voxel of interests (VOIs) were decided on the three-dimensional T2-weighted images by a single neuroradiologist to minimize the variation of the VOI location as per the following rule: the maximum size of VOI was set within a tumor not to include its border (Fig. 2). Tumor metabolites were examined as follows: GABA, glutamate, tNAA, and 2HG. The Analyzed echo time was based on previous studies33 (link), 34 (link). LCModel (Stephen Provencher, Oakville, Ontario, Canada) was used to automatically analyze all spectra data35 (link). The obtained data were analyzed based on the Cramer-Rao lower bound with %SD value, and the quantified values of these metabolites were considered as reliable if their %SD values were 30 or less19 (link), 36 (link).

An MRI image showing an example of setting the voxel of interest in this study.

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