Table 2 Scanning protocol details of the ADNI1, ADNI2, PPMI, and CALSNIC2 datasets.
From: Effects of MRI scanner manufacturers in classification tasks with deep learning models
Dataset | Scanning protocol | MRI scanner manufacturer | ||
|---|---|---|---|---|
GE | Siemens | Philips | ||
ADNI1 | Model | Genesis Signa, Signa Excite, | Symphony, Sonata, Trio, | Achieva, Intera Achieva, |
Signa HDx | TrioTim, Avanto, Allegra | Intera, Gyroscan Intera | ||
Field strength | 1.5 T / 3.0 T | 1.5 T / 3.0 T | 1.5 T / 3.0 T | |
Flip angle | 8 ° | 8 °/ 9 ° | 8 ° | |
Spatial resolution | \(1.0\times 1.0\times 1.2\) \({\rm mm}^3\) / | \(1.0\times 1.0\times 1.2\) \({\rm mm}^3\) / | \(1.0\times 1.0\times 1.2\) \({\rm mm}^3\) / | |
\(0.94\times 0.94\times 1.2\) \({\rm mm}^3\) | \(1.25\times 1.25\times 1.2\) \({\rm mm}^3\) | \(0.94\times 0.94\times 1.2\) \({\rm mm}^3\) | ||
ADNI2 | Model | Signa HDxt, Signa Excite, | Symphony, Skyra, Verio, | Achieva dStream, Achieva, |
Signa HDx, Discovery MR750 | TrioTim, Avanto | Intera, Ingenia, Ingenuity | ||
Field strength | 3.0 T | 3.0 T | 3.0 T | |
Flip angle | 11 ° | 9 ° | 9 ° | |
Spatial resolution | \(1.05\times 1.05\times 1.2\) \({\rm mm}^3\) | \(1.05\times 1.05\times 1.2\) \({\rm mm}^3\) | \(1.05\times 1.05\times 1.2\) \({\rm mm}^3\) | |
PPMI | Model | Signa HDxt, Signa Excite, | Symphony, Skyra, Verio, | Achieva dStream, Intera, |
Discovery MR750w, Genesis Signa | TrioTim, Prisma, Espree, | Achieva, Gyroscan NT | ||
Signa Architect, Discovery MR750 | Prisma Fit | Â | ||
Field strength | 1.5 T / 3.0 T | 1.5 T / 3.0 T | 1.5 T / 3.0 T | |
Flip angle | 8 °/ 11 °/ 13 °/ 15 ° | 8 °/ 9 °/ 15 ° | 8 °/ 9 ° | |
Spatial resolution | \(1.0\times 1.0\times 1.0\) \({{\rm mm}}^3\) / | \(1.0\times 1.0\times 1.0\) \({{\rm mm}}^3\) / | \(1.0\times 1.0\times 1.0\) \({\rm mm}^3\) / | |
\(0.94\times 0.94\times 1.2\) \(\textrm{mm}^3\)/ | \(1.25\times 1.25\times 1.3\) \(\textrm{mm}^3\)/ | \(0.94\times 0.94\times 1.2\) \(\textrm{mm}^3\)/ | ||
\(0.94\times 0.94\times 0.7\) \({\rm mm}^3\) | \(0.49\times 0.49\times 2.0\) \({\rm mm}^3\) | \(1.0\times 1.0\times 1.2\) \(\textrm{{ mm}}^3\) | ||
CALSNIC2 | Model | Discovery MR750 | Prisma, Prisma Fit, TrioTim | Achieva |
Field strength | 3.0 T | 3.0 T | 3.0 T | |
Flip angle | 16 ° | 10 ° | 10 ° | |
Spatial resolution | \(1.0\times 1.0\times 1.0\) \({\rm mm}^3\) | \(1.0\times 1.0\times 1.0\) \({\rm mm}^3\) | \(1.0\times 1.0\times 1.0\) \({\rm mm}^3\) | |
