Table 2 Represents the various research articles included in the study. It also explains the modality and number of subjects included in the research they conducted

Zhang D et al. [3]

ADNI

MRI (T1 weighted), FDG-PET

–

–

Suk H et al. [4]

ADNI

fMRI TR2

–

–

Lu D et al. [6]

ADNI

MRI 1.5 T, FDG-PET

217

409

Tong T et al. [7]

ADNI

MRI 1.5 T

167

238

Lee G et al. [9]

ADNI

MRI 1.5 T, CFS, Cog. Score

307

558

Xiao Z et al. [10]

ADNI

MRI 1.5 T

–

542

Ortiz A et al. [12]

ADNI

MRI 1.5 T,FDG-PET

26

111

Subramoniam M et al.(a) [14]

Kaggle

MRI 1.5 T

–

2240

Subramoniam M et al.(b) [14]

Kaggle

MRI 1.5 T

–

2240

Yue L et al.(a) [23]

ADNI-1

MRI 1.5 T

–

542

Yue L et al.(b) [23]

ADNI-2

MRI 3 T

1304

1583

Goryawala M et al. [24]

ADNI

MRI 1.5 T

91

114

Aderghal [25]

ADNI

MRI 1.5 T

–

399

Korolev (a) [26]

ADNI

MRI 1.5 T

43

77

Korolev (b) [26]

ADNI

MRI 1.5 T

43

77

Cheng and Liu [27]

ADNI

FDG-PET

–

146

Choi H et al. [28]

ADNI

FDG and AV-45 PET

79

92

Cheng and Liu [29]

ADNI

MRI 1.5 T, FDG-PET

–

–

Kumar N et al. [30]

OASIS

MRI 1.5 T

–

37

Ji h et al. [31]

ADNI

MRI 1.5 T

–

–

Battineni G et al. [32]

OASIS

MRI 1.5 T

–

37

Kumari R et al. [33]

OASIS-3

MRI 1.5 T

–

–

Alickovic E et al. [34]

ADNI

MRI 1.5 T

–

–

Madiwalar S et al. [35]

OASIS

MRI 1.5 T

–

–

Pan D et al. [36]

ADNI

MRI 1.5 T

–

–

Alroobaea R et al. (a) [37]

ADNI

MRI 1.5 T

–

–

Alroobaea R et al. (b) [37]

OASIS

MRI 1.5 T

–

37

Savita et al. [38]

OASIS

MRI 1.5 T

–

–

Li and Yang [39]

ADNI

MRI 1.5 T

–

–

Mehmood A et al. [40]

ADNI

MRI 1.5 T

–

–