scholarly journals Denoising Diffusion-Weighted Images Using Grouped Iterative Hard Thresholding of Multi-Channel Framelets

2017 ◽  
pp. 49-59 ◽  
Author(s):  
Jian Zhang ◽  
Geng Chen ◽  
Yong Zhang ◽  
Bin Dong ◽  
Dinggang Shen ◽  
...  
Keyword(s):  
Hard Thresholding ◽  
Diffusion Weighted Images ◽  
Diffusion Weighted ◽  
Iterative Hard Thresholding

Early Ischemic Stroke: Comparison of Diffusion Weighted Images and ADC maps

1998 ◽  
Vol 39 (1) ◽  
pp. 21
Author(s):  
Soo Jung Choi ◽  
Choong Gon Choi ◽  
Jae Kyun Kim ◽  
Jung Hoon Kim ◽  
Jae Hong Lee ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Diffusion Weighted Images ◽  
Diffusion Weighted

scholarly journals Acute and episodic vestibular syndromes caused by ischemic stroke: predilection sites on diffusion-weighted images

2019 ◽  
Author(s):  
Dao-Ming Tong ◽  
Xiao-Dong Chen ◽  
Ye-Ting Zhou ◽  
Tong-Hui Yang
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Large Vessel ◽  
Anterior Circulation ◽  
Diffusion Weighted Images ◽  
Diffusion Weighted ◽  
Acute Vestibular Syndrome ◽  
Vessel Stenosis ◽  
Tertiary Teaching ◽  
Abcd2 Score

Abstract Background Although acute vestibular syndrome (AVS) and episodic vestibular syndrome (EVS) are an increasingly recognized cause of acute ischemic stroke, the predilection sites of AVS/EVS caused by acute ischemic stroke still is less known. Methods From Mar 2014 to Mar 2016 period, we used a new approach of 11thedition of the International Classification of Diseases (ICD-11) to retrospectively enrolled patients with identified AVS/EVS events caused by acute ischemic stroke in the stroke center of tertiary teaching hospital. The patients who had positive diffusion-weighted images (DWI) lesion and MRA were analyzed. Multivariable logistic regression was used to identify the risk of stroke causing AVS/EVS. Results Among 181 AVS/EVS patients with ischemic stroke, 68 (37.6%) patients with acute ischemic stroke were proved by DWI. Of them, the most frequent type was EVS (60.3%); the predilection sites of stroke was in the insular (51.7%, 15/29) in the anterior circulation artery (ACA), followed by the posterior of thalamus (28.6%, 8/28) in the posterior circulation artery (PCA). The lesion on DWI showed a median diameter of 4.0mm (range,0.6-89.4). The risk of AVS/EVS in acute ischemic stroke was found in association with large vessel stenosis/ occlusion (odds ratio[OR],, 0.12; 95% confidence interval [CI], 0.040-0.357), focal neurological symptom /sign (OR, 0.27; 95% CI, 0.104-0.751), and higher initial ABCD2 score (OR, 0.37; 95% CI, 0.239-0.573). Conclusions The predilection site of the AVS/EVS caused by acute ischemic stroke is in the insular. The risk of AVS/EVS was associated with a large vessel stenosis, focal neurological symptoms, and higher initial ABCD2 score.

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