scholarly journals Transient global amnesia with bilateral hippocampal findings in magnetic resonance imaging

2020 ◽  
Vol 3 (1) ◽  
pp. 01-03
Author(s):  
Sonia P. Rodriguez ◽  
Alfredo Fernandez de Castro ◽  
Carlos Enrique Trillos Peña
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Personal Identity ◽  
Transient Global Amnesia ◽  
Anterograde Amnesia ◽  
Acute Onset ◽  
Unknown Etiology ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Global Amnesia

Transient global amnesia (TGA) is an unusual neurological syndrome of unknown etiology that affects individuals between 50 and 75 years old. We describe the case of a 61-year-old woman, who experienced an episode of two hours of anterograde amnesia. The event had an acute onset and was observed by a reliable witness. It lacked motor or sensory symptoms, compromised consciousness, or personal identity. A brain magnetic resonance was performed 22 hours after the onset of symptoms depicting foci of restricted diffusion in both hippocampi. Taking into account clinical and imaging findings, the diagnosis of transient global amnesia was made.

Magnetic Resonance Imaging in Transient Global Amnesia

2012 ◽  
Vol 22 (4) ◽  
pp. 335-340 ◽  
Author(s):  
M. Scheel ◽  
C. Malkowsky ◽  
R. Klingebiel ◽  
S. J. Schreiber ◽  
G. Bohner
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Transient Global Amnesia ◽  
Resonance Imaging ◽  
Global Amnesia

scholarly journals Neurosyphilis Showing Transient Global Amnesia-like Attacks and Magnetic Resonance Imaging Abnormalities Mainly in the Limbic System.

2001 ◽  
Vol 40 (5) ◽  
pp. 439-442 ◽  
Author(s):  
Hiroshi FUJIMOTO ◽  
Toshihiro IMAIZUMI ◽  
Yasuko NISHIMURA ◽  
Yumiko MIURA ◽  
Mitsuyoshi AYABE ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Limbic System ◽  
Transient Global Amnesia ◽  
Resonance Imaging ◽  
Global Amnesia

scholarly journals Altered consciousness with transient abnormal signals in the hippocampus: A case report

2021 ◽  
Vol 9 ◽  
pp. 2050313X2110546
Author(s):  
Koshi Ota ◽  
Tomonobu Nishii ◽  
Kensuke Fujii ◽  
Yasuo Oishi ◽  
Naoya Onishi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Transient Global Amnesia ◽  
Altered Mental Status ◽  
Resonance Imaging ◽  
Altered Consciousness ◽  
Serial Magnetic Resonance Imaging ◽  
Apparent Diffusion ◽  
Weighted Magnetic Resonance Imaging ◽  
Global Amnesia

Hippocampal infarction is relatively rare. Many different diseases can mimic hippocampal infarction including transient global amnesia, Alzheimer’s disease, epilepsy, encephalitis, and encephalopathies. An 89-year-old man was transported to our hospital for altered consciousness. Diffusion-weighted magnetic resonance imaging revealed slightly intense signals in the hippocampus with a mildly decreased apparent diffusion coefficient. Serial magnetic resonance imaging revealed features of hippocampal infarction. Symptoms and cognitive function gradually improved with rehabilitation, and he was transferred to a rehabilitation facility on Hospital Day 38. Hippocampal infarction is rare in patients with altered mental status, but should be considered when magnetic resonance imaging shows findings suggestive of this condition. Other differential diseases should be ruled out by serial magnetic resonance imaging and observation of the clinical course.

scholarly journals Diffusion magnetic resonance imaging in transient global amnesia

2009 ◽  
Vol 67 (1) ◽  
pp. 130-131 ◽  
Author(s):  
Clecio Godeiro-Junior ◽  
Maramélia Araújo de Miranda-Alves ◽  
Ayrton Roberto Massaro
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Diffusion Magnetic Resonance Imaging ◽  
Transient Global Amnesia ◽  
Resonance Imaging ◽  
Global Amnesia

Intraaxial Spinal Cord Hemorrhage Secondary to Atlantoaxial Subluxation in a Dog

2010 ◽  
Vol 46 (2) ◽  
pp. 132-137 ◽  
Author(s):  
Marc Kent ◽  
Joseph S. Eagleson ◽  
Dharshan Neravanda ◽  
Scott J. Schatzberg ◽  
Fredrik I. Gruenenfelder ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Neck Pain ◽  
Vertebral Column ◽  
Acute Onset ◽  
Spinal Cord Lesion ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Cord Lesion

A 1-year-old, 3.5-kg, spayed female, toy poodle was presented for acute-onset tetraplegia and neck pain. Neuroanatomical diagnosis was consistent with a first through fifth cervical (C1 through C5) spinal cord lesion. Radiographs of the cervical vertebral column revealed atlantoaxial (AA) subluxation. Magnetic resonance imaging revealed abnormalities consistent with intraaxial spinal cord hemorrhage at the level of the AA articulation. The dog was treated with external coaptation. After 8 days, the dog regained voluntary motor function in all four limbs. Surgical stabilization was pursued. Postoperatively, the dog regained the ability to ambulate. This report details the imaging findings and management of a dog with intraaxial spinal cord hemorrhage secondary to AA subluxation.

scholarly journals Optimization of magnetic resonance imaging protocol for the diagnosis of transient global amnesia

2019 ◽  
Vol 52 (3) ◽  
pp. 161-165 ◽  
Author(s):  
Luiz de Abreu Junior ◽  
Laiz Laura de Godoy ◽  
Luciana Pinheiro dos Santos Vaz ◽  
André Evangelista Torres ◽  
Angela Maria Borri Wolosker ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Symptom Onset ◽  
Transient Global Amnesia ◽  
B Value ◽  
Slice Thickness ◽  
Resonance Imaging ◽  
Imaging Protocol ◽  
Global Amnesia ◽  
The Ideal

Abstract Objective: To emphasize the most appropriate magnetic resonance imaging (MRI) diffusion protocol for the detection of lesions that cause transient global amnesia, in order to perform an accurate examination, as well as to determine the ideal time point after the onset of symptoms to perform the examination. Materials and Methods: We evaluated five patients with a diagnosis of transient global amnesia treated between 2012 and 2015. We analyzed demographic characteristics, clinical data, symptom onset, diffusion techniques, and radiological findings. Examination techniques included a standard diffusion sequence (b value = 1000 s/mm2; slice thickness = 5 mm) and a optimized diffusion sequence (b value = 2000 s/mm2; slice thickness = 3 mm). Results: Brain MRI was performed at 24 h or 36 h after symptom onset, except in one patient, in whom it was performed at 12 h after (at which point no changes were seen) and repeated at 36 h after symptom onset (at which point it showed alterations in the right hippocampus). The standard and optimized diffusion sequences were both able to demonstrate focal changes in the hippocampi in all of the patients but one, in whom the changes were demonstrated only in the optimized sequence. Conclusion: MRI can confirm a clinical hypothesis of transient global amnesia. Knowledge of the optimal diffusion parameters and the ideal timing of diffusion-weighted imaging (> 24 h after symptom onset) are essential to improving diagnostic efficiency.

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