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This study aimed to explore the association between CaST performance and brain amyloid-\u03b2 (A\u03b2) burden in patients with mild cognitive impairment (MCI) and the neurofunctional mechanisms. A total of 112 participants with MCI underwent Florbetapir positron emission tomography, resting-state functional magnetic resonance imaging, and a neuropsychological test battery. The high A\u03b2 burden group had worse CaST performance than the low-burden group. CaST score and left middle temporal gyrus fractional amplitude of low-frequency fluctuations (fALFF) related inversely to the global Florbetapir standardized uptake value rate. Functional connectivity between the left middle temporal gyrus and frontal lobe decreased widely and correlated with CaST score in the high A\u03b2 burden group. Thus, CaST score and left middle temporal gyrus fALFF were valuable in discriminating high A\u03b2 burden. CaST might be useful in screening for MCI with high A\u03b2 burden.<\/jats:p>","DOI":"10.1177\/10731911231167537","type":"journal-article","created":{"date-parts":[[2023,4,21]],"date-time":"2023-04-21T01:46:05Z","timestamp":1682041565000},"page":"543-556","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":7,"title":["Category Switching Test: A Brief Amyloid-\u03b2-Sensitive Assessment Tool for Mild Cognitive Impairment"],"prefix":"10.1177","volume":"31","author":[{"given":"Liang","family":"Cui","sequence":"first","affiliation":[{"name":"Department of Gerontology, Shanghai Sixth People\u2019s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhen","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Gerontology, Shanghai Sixth People\u2019s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yihan","family":"Guo","sequence":"additional","affiliation":[{"name":"School of Medicine, The University of Queensland, Brisbane, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuehua","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Gerontology, Shanghai Sixth People\u2019s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fang","family":"Xie","sequence":"additional","affiliation":[{"name":"Department of Nuclear Medicine & PET Center, Huashan Hospital, Fudan University, Shanghai, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5079-8047","authenticated-orcid":false,"given":"Qihao","family":"Guo","sequence":"additional","affiliation":[{"name":"Department of Gerontology, Shanghai Sixth People\u2019s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2023,4,20]]},"reference":[{"key":"bibr1-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1016\/j.nicl.2021.102713"},{"key":"bibr2-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1523\/JNEUROSCI.2504-20.2021"},{"key":"bibr3-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1080\/13803395.2016.1277513"},{"key":"bibr4-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1016\/j.bbr.2010.09.010"},{"key":"bibr5-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1037\/1040-3590.8.2.145"},{"key":"bibr6-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1037\/a0017767"},{"key":"bibr7-10731911231167537","doi-asserted-by":"publisher","DOI":"10.3233\/JAD-140276"},{"key":"bibr8-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1111\/desc.12602"},{"key":"bibr9-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1007\/s11065-020-09475-z"},{"key":"bibr10-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1159\/000346234"},{"key":"bibr11-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1159\/000493553"},{"key":"bibr12-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-5415.1995.tb05811.x"},{"key":"bibr13-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1007\/s10072-013-1520-8"},{"key":"bibr14-10731911231167537","doi-asserted-by":"publisher","DOI":"10.3389\/fnagi.2021.684918"},{"key":"bibr15-10731911231167537","doi-asserted-by":"publisher","DOI":"10.2174\/1567205015666180427122746"},{"key":"bibr16-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuroimage.2016.05.051"},{"key":"bibr17-10731911231167537","doi-asserted-by":"publisher","DOI":"10.1590\/1980-57642015dn93000008"},{"key":"bibr18-10731911231167537","volume-title":"Delis-Kaplan Executive Function System (D-KEFS)","author":"Delis D. 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