{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T21:41:45Z","timestamp":1781300505003,"version":"3.54.1"},"reference-count":57,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2023,5,18]],"date-time":"2023-05-18T00:00:00Z","timestamp":1684368000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["MAKE"],"abstract":"<jats:p>Alzheimer\u2019s disease (AD) is an old-age disease that comes in different stages and directly affects the different regions of the brain. The research into the detection of AD and its stages has new advancements in terms of single-modality and multimodality approaches. However, sustainable techniques for the detection of AD and its stages still require a greater extent of research. In this study, a multimodal image-fusion method is initially proposed for the fusion of two different modalities, i.e., PET (Positron Emission Tomography) and MRI (Magnetic Resonance Imaging). Further, the features obtained from fused and non-fused biomarkers are passed to the ensemble classifier with a Random Forest-based feature selection strategy. Three classes of Alzheimer\u2019s disease are used in this work, namely AD, MCI (Mild Cognitive Impairment) and CN (Cognitive Normal). In the resulting analysis, the Binary classifications, i.e., AD vs. CN and MCI vs. CN, attained an accuracy (Acc) of 99% in both cases. The class AD vs. MCI detection achieved an adequate accuracy (Acc) of 91%. Furthermore, the Multi Class classification, i.e., AD vs. MCI vs. CN, achieved 96% (Acc).<\/jats:p>","DOI":"10.3390\/make5020031","type":"journal-article","created":{"date-parts":[[2023,5,18]],"date-time":"2023-05-18T10:01:13Z","timestamp":1684404073000},"page":"512-538","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":45,"title":["Alzheimer\u2019s Disease Detection from Fused PET and MRI Modalities Using an Ensemble Classifier"],"prefix":"10.3390","volume":"5","author":[{"given":"Amar","family":"Shukla","sequence":"first","affiliation":[{"name":"School of Computer Science, University of Petroleum and Energy Studies, Dehradun 248007, Uttarakhand, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8245-4748","authenticated-orcid":false,"given":"Rajeev","family":"Tiwari","sequence":"additional","affiliation":[{"name":"School of Computer Science, University of Petroleum and Energy Studies, Dehradun 248007, Uttarakhand, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5987-7101","authenticated-orcid":false,"given":"Shamik","family":"Tiwari","sequence":"additional","affiliation":[{"name":"School of Computer Science, University of Petroleum and Energy Studies, Dehradun 248007, Uttarakhand, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"103863","DOI":"10.1016\/j.jbi.2021.103863","article-title":"Alzheimer\u2019s disease diagnosis framework from incomplete multimodal data using convolutional neural networks","volume":"121","author":"Abdelaziz","year":"2021","journal-title":"J. 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