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Achieva 3.0 t x series scanner

Manufactured by Philips
Sourced in Netherlands

The Achieva 3.0 T X-series scanner is a magnetic resonance imaging (MRI) system manufactured by Philips. It operates at a field strength of 3.0 tesla, which allows for high-resolution imaging. The scanner's core function is to capture detailed images of the body's internal structures using strong magnetic fields and radio waves.

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4 protocols using achieva 3.0 t x series scanner

1

Functional MRI Protocol for Whole-Brain Imaging

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We collected the fMRI data on a Philips Achieva 3.0 T X-series scanner using a 32-channel head coil. Functional scans were collected using a multi-band echo-planar imaging (EPI) sequence with a multi-band acceleration factor of 2. Thirty-eight transaxial slices parallel to the anterior-posterior commissure (AC-PC) covering the whole brain were acquired with a voxel size of 2 × 2 × 3 mm3, TR = 2200 ms, TE = 24 ms, flip angle = 90, the field of view 224 mm, and no interslice gap. For each participant, high-resolution T1-weighted structural images were acquired, with 176 transversally oriented slices covering the whole brain, to correct for geometric distortions and perform co-registration with the EPIs (isotropic T1 TFE sequence: voxel size: 1 × 1 × 1 mm3, the field of view 240 × 176 mm2).
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2

Multimodal Neuroimaging Acquisition Protocol

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Functional MEG data were collected using an Elekta/MEGIN MEG system (Helsinki, Finland) equipped with 306 sensors (204 planar gradiometers and 102 magnetometers) using a 1 kHz sampling rate and an acquisition bandwidth of 0.1–330 Hz in a one-layer magnetically shielded room with active shielding engaged. Prior to MEG acquisition, four coils were attached to the participant’s head and localized along with fiducial and scalp surface points using a three-dimensional (3D) digitizer (FASTRAK 3SF0002, Polhemus Navigator Sciences, Colchester, VT, USA). Once the participants were positioned for MEG recording, an electric current with a unique frequency label (e.g., 322 Hz) was fed to each of the four coils, thus inducing a measurable magnetic field and thereby allowing each coil to be localized in reference to the MEG sensor array throughout the recording session. Structural T1-weighted images were collected using a 3D-fast-field echo sequence on a Philips Achieva 3.0T X-Series scanner with an eight-channel head coil (Philips Healthcare, Best, Netherlands). The parameters for the 3D-fast-field echo sequence were as follows: repetition time (TR): 8.09 ms; echo time (TE): 3.7 ms; field of view: 24 cm; matrix: 256 × 256; slice thickness: 1 mm with no gap; in-plane resolution: 0.9375 × 0.9375 mm; sense factor: 1.5 (Lew et al., 2021 (link); Schantell et al., 2021 (link)).
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3

Pediatric Neurovisual Therapy Assessment

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The setting in which the patients will be recruited and the study visits will be carried out will be the pediatric ophthalmology units of the University Clinical Hospital of Valladolid and the Vithas Medimar International Hospital of Alicante.
On the other hand, the setting in which the necessary equipment will be installed to carry out the active visual therapy sessions with the NEIVATECH system will be a consultation room of the Department of Medicine of the University of Valladolid and the Department of Optics, Pharmacology and Anatomy of the University of Alicante.
All rsfMRI scans that are intended to be performed as part of the study will take place in the Philips Achieva 3.0 T X-Series Scanner of the Laboratory of Instrumental Techniques (LTI) of the University of Valladolid.
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4

Structural MRI Acquisition Protocol

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Participant MRI data were acquired using an eight-channel head coil. Structural T1-weighted images were collected using a 3D-fast-field echo sequence on a Philips Achieva 3.0 T X-Series scanner. The parameters for the 3D-fast-field echo sequence were as follows: TR: 8.09 ms; TE: 3.7 ms; field of view: 24 cm; matrix: 256 × 256; slice thickness: 1 mm with no gap; in-plane resolution: 0.9375 × 0.9375 mm; sense factor: 1.5. The anatomical images were examined by a radiologist for incidental findings.
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