{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,27]],"date-time":"2025-11-27T13:51:57Z","timestamp":1764251517149},"reference-count":16,"publisher":"Georg Thieme Verlag KG","issue":"01","license":[{"start":{"date-parts":[[2021,7,26]],"date-time":"2021-07-26T00:00:00Z","timestamp":1627257600000},"content-version":"vor","delay-in-days":1302,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Indian Journal of Radiology and Imaging"],"published-print":{"date-parts":[[2018,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>\n          Introduction: Aim of this study is to identify and describe the MRI findings in patients with Transient Global Amnesia (TGA), specifically on Diffusion Weighted Imaging (DWI) sequence. Methods: MRI findings in 12 patients with clinical diagnosis of TGA were retrospectively analysed. MRI brain was performed with a 3T scanner on 11 patients and 1.5T scanner on 1 patient. DWI were acquired at B value of 1000 s\/mm2 in 4 patients, 2000 s\/mm2 in 2 patients and both 1000 and 2000 s\/mm2 in 6 patients. Results: There were 7 female and 5 male patients. The mean age was 65.67 years (range 61-74 years). The median time interval between the onset of symptom and MRI scan was 47.5 hours, range 25-114 hours. 11 of the 12 patients showed punctate foci of restricted diffusion in hippocampus (mean size 3.7 mm (range 2-6.5 mm). 10 patients showed foci in left hippocampus. Nine patients showed a single focus, 1 patient showed three foci and 1 patient showed four foci. In 6 patients who had DWI MRI at both B values, scans at B value of 1000 s\/mm2 revealed abnormality in 4 patients, while higher B value imaging improved sensitivity in one patient and one patient had a negative scan at both B values. Conclusion: We have highlighted the MRI finding of typical punctate foci of bright signal in hippocampus seen on DWI in patients diagnosed with TGA. Detection on a routine stroke MRI protocol can avoid need for dedicated TGA protocols or repeat scan, improving the workflow.<\/jats:p>","DOI":"10.4103\/ijri.ijri_12_17","type":"journal-article","created":{"date-parts":[[2018,3,28]],"date-time":"2018-03-28T09:31:37Z","timestamp":1522229497000},"page":"6-9","source":"Crossref","is-referenced-by-count":10,"title":["Transient global amnesia: Diffusion MRI findings"],"prefix":"10.1055","volume":"28","author":[{"given":"Tarun P","family":"Jain","sequence":"additional","affiliation":[{"name":"Universal Medical Imaging, Canberra"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ronak","family":"Patel","sequence":"additional","affiliation":[{"name":"Stroke Service, Calvary Public Hospital, Bruce"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yash","family":"Gawarikar","sequence":"additional","affiliation":[{"name":"Stroke Service, Calvary Public Hospital, Bruce"},{"name":"Australian National University, Canberra, ACT, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2021,7,26]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"264","DOI":"10.1016\/j.mayocp.2014.12.001","article-title":"Transient global amnesia","volume":"90","author":"J E Arena","year":"2015","journal-title":"Mayo Clin Proc"},{"key":"ref2","doi-asserted-by":"crossref","first-page":"358","DOI":"10.1111\/j.1600-0404.1990.tb01571.x","article-title":"Transient global amnesia: Incidence in an urban population","volume":"81","author":"K J Koski","year":"1990","journal-title":"Acta Neurol Scand"},{"key":"ref3","doi-asserted-by":"crossref","first-page":"834","DOI":"10.1136\/jnnp.53.10.834","article-title":"Syndromes of transient amnesia: Towards a classification. 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