The core CIMA‐Q protocol is referred to as the Canadian Dementia Imaging Protocol (www.cdip-pcid.ca ). All brain images were acquired from either Siemens Healthcare (TrioTim and Prisma Fit) or Philips Medical Systems (Achieva and Ingenia) scanners with a magnetic field of 3 Tesla (more details about the acquisition parameters can be found in supporting information). The protocol sequences for image acquisition were harmonized between manufacturers/software configurations to optimize commonality, and quality control procedures were performed monthly to ensure across‐scan comparability (see Duchesne et al.22 ).
Prisma fit
Manufactured by Philips
The Prisma Fit is a lab equipment product offered by Philips. It is designed to perform basic analysis and testing functions within a laboratory setting. The core function of the Prisma Fit is to provide accurate and reliable measurements for various laboratory applications.
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Lab products found in correlation
3 protocols using prisma fit
1
Canadian Dementia Imaging Protocol
2
Multi-site 3T MRI Scanning for Cognitive Impairment
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T1-weighted MRI scanning was performed at five different sites (see Table 1 ). Scans were acquired from either Siemens Healthcare (TrioTim and Prisma Fit) or Philips Medical Systems (Achieva and Ingenia) scanners with a magnetic field strength of 3 Tesla. All scans were first visually inspected by a rater blinded to the diagnosis. Six participants were excluded due to poor quality scans (CH = 1, SCD = 1, AD = 4). The final sample included 137 participants (CH = 29, SCD = 66, eMCI = 22, lMCI = 8, AD = 12).
3
Harmonized MRI Brain Imaging Protocol
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Structural T1-and T2-weighted MRI scans were acquired at the baseline session using harmonized pulse sequences (T1: TE = 2-2.9ms, TR= 6.31 -2500 ms, T1 = 1,060 ms, flip angle = 8 degrees, FOV = 256 x 256, resolution = 1 mm isotropic, slice thickness, slices = 176-225; T2: TE = 60-565 ms, FOV = 256 x 256, resolution = 1mm isotropic, slices= 176-225) across seven 3T MRI scanner models (Siemens: Prisma, Prisma Fit; Phillips: Achieva dStream, Ingenia, Signa Creator, Discovry MR 750). Acquisition details are provided in Casey et al., 2018) (link). The T1 and T2-weighted structural scans used for this study were processed by the Developmental Cognition and Neuroimaging (DCAN) labs as part of the ABCD-BIDS Community Collection (ABCC). These methods are described in detail at the following webpage: https://collection3165.readthedocs.io/en/stable/.
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