Long‐term sequelae of hippocampal lesions in patients with transient global amnesia: A multiparametric MRI study

Abstract

2 Technical Efficacy: Stage 3 J. Magn. Reson. Imaging 2018;47:1350-1358.

Transient Global Amnesia: Risk Factors, Imaging Features, and Prognosis

“…The patients with TGA and lesions on DWI were further examined using fMRI. Similar to the results of previous studies, 12 , 16 , 17 , 20–25 our findings showed that the lesions on DWI were mainly located in the hippocampal CA1 area ( Figure 3 ). Seven of the patients with TGA and hippocampal lesions on DWI were right-handed, suggesting that the left cerebral hemisphere was dominant.…”

“…When some of the damage factors disappear quickly, the damage does not involve the tissue, and the FLAIR sequence will not show high signal intensity. After the onset of TGA, the hippocampus is damaged, as supported by previous studies, 16 , 18 , 19 which also proposed that the damage elicits an effect after the onset.…”

“…When some of the damage factors disappear quickly, the damage does not involve the tissue, and the FLAIR sequence will not show high signal intensity. After the onset of TGA, the hippocampus is damaged, as supported by previous studies, 16,18,19 which also proposed that the damage elicits an effect after the onset. In summary, our study indicated that several of the patients with TGA had hippocampal ischemic injury and that the possible mechanisms involved microembolization and arterial spasm among other processes.…”

“… 14 , 15 On the other hand, our examination of the high signal intensity in the hippocampus on DWI revealed that the volume of a high signal focused on DWI was exited volatility, accounting for a low proportion of the total volume of the hippocampal CA1 region, eg, the volume of the lesions in the hippocampus in this study. 16 Furthermore, the size of the lesions ranged from 2.22 to 64.9 mm 3 (mean = 22.3 m 3 ). In another study, 11 patients showed punctate foci of restricted diffusion in the hippocampus (mean size = 3.7 mm; range = 2.0–6.5 mm).…”

FreeSurfer based segmentation of hippocampal subfields: a review of methods and applications, with a novel quality control procedure for ENIGMA studies and other collaborative efforts

“…PTSD (Bøen et al, 2014;Chen et al, 2016;Averill et al, 2017;Hayes et al, 2017), childhood maltreatment (Teicher et al, 2012;Chalavi et al, 2015), verbal abuse , childhood trauma in schizophrenia and healthy controls (du Plessis et al, 2019), in bipolar disorders and healthy controls (Janiri et al, 2019a) and in adolescence (Malhi et al, 2019) Other neuropsychiatric conditions Pain symptoms (Ezzati et al, 2014), ADHD (Al-Amin et al, 2018), anorexia nervosa (Myrvang et al, 2018), obsessive compulsive disorder (Zhang et al, 2019), and transient global amnesia (Wang et al, 2018b), essential tremor (Prasad et al, 2019), rapid eye movement sleep behavior disorder (Campabadal et al, 2019), trigeminal neuralgia (Vaculik et al, 2019) Thalamic infarction (Chen et al, 2016), sequelae of microsurgical aneurysm clipping (Hedderich et al, 2019)…”