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19 November 2016 : Clinical Research  

Prognostic Value of Diffusion-Weighted Imaging (DWI) Apparent Diffusion Coefficient (ADC) in Patients with Hyperacute Cerebral Infarction Receiving rt-PA Intravenous Thrombolytic Therapy

Hai-Jing SuiB, Cheng-Gong YanC, Zhen-Guo ZhaoA, Qing-Ke BaiE

DOI: 10.12659/MSM.897149

Med Sci Monit 2016; 22:4438-4445

Abstract

BACKGROUND: The aim of this study was to investigate the potential value of apparent diffusion coefficient (ADC) of diffusion-weighted imaging (DWI) in the prognosis of patients with hyperacute cerebral infarction (HCI) receiving intravenous thrombolytic therapy with recombinant tissue plasminogen activator (rt-PA).

MATERIAL AND METHODS: From June 2012 to June 2015, 58 cases of HCI (<6 h) undergoing rt-PA intravenous thrombolytic therapy (thrombolysis group) and 70 cases of HCI (<6 h) undergoing conventional antiplatelet and anticoagulant therapy (control group) in the same period were collected. DWI was conducted on all the subjects, and ADC maps were generated with Functool software to quantify ADC value. The clinical outcomes of HCI patients were observed for 3 months, and prognostic factors were analyzed.

RESULTS: Before thrombolysis treatment, the lesion area presented high signal intensity on DWI map and low signal intensity on ADC map, and gradually weakened signal intensity on DWI map and gradually enhanced signal intensity on ADC map were observed after thrombolysis. The ADC values of the thrombolysis group were significantly higher than those of the control group after treatment (24 h, 7 d, 30 d, and 90 d) (all P<0.05), and the ADC and rADC values in the thrombolysis group gradually increased over time (all P<0.05). Multiple logistic regression analysis showed that baseline National Institutes of Health Stroke Scale (NIHSS) score, baseline rADC value, and stroke history were the independent factors for the prognosis of HIC patients with thrombolysis (all P<0.05).

CONCLUSIONS: The values of ADC and rADC may provide guidance in the prognosis of HCI patients receiving rt-PA, and the baseline rADC value is the protective factor for the prognosis of HCI patients receiving rt-PA.

Keywords: Administration, Intravenous, Case-Control Studies, Cerebral Infarction - therapy, Diffusion Magnetic Resonance Imaging - methods, Fibrinolytic Agents - therapeutic use, Recombinant Proteins - therapeutic use, Stroke - drug therapy, Thrombolytic Therapy - methods, Tissue Plasminogen Activator - therapeutic use

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750