Study on the application of three-dimensional arterial spin labeling in diagnosis of viral encephalitis
Objective To evaluate the role of three-dimensional arterial spin labeling (3D-ASL) in the diagnosis of viral encephalitis. Methods MRI [T1WI, T2WI, diffusion-weighted imaging (DWI) and 3D-ASL] was performed in 41 patients with clinically diagnosed viral encephalitis, including 28 cases in acute ph...
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Tianjin Huanhu Hospital
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doaj-7add523cdb094a559ea28c1864a677672020-11-24T23:09:00ZengTianjin Huanhu HospitalChinese Journal of Contemporary Neurology and Neurosurgery1672-67312018-03-011831771821706Study on the application of three-dimensional arterial spin labeling in diagnosis of viral encephalitisZheng-kun PENG0Hong-ying ZHANG1Jing-tao WU2Jing YE3Shou-an WANG4Yao XU5Jun XU6Grade 2015, Xiangya School of Medicine, Central South University, Changsha 410013, Hu'nan, ChinaDepartment of Radiology, Northern Jiangsu People's Hospital, Yangzhou 225000, Jiangsu, ChinaDepartment of Radiology, Northern Jiangsu People's Hospital, Yangzhou 225000, Jiangsu, ChinaDepartment of Radiology, Northern Jiangsu People's Hospital, Yangzhou 225000, Jiangsu, ChinaDepartment of Radiology, Northern Jiangsu People's Hospital, Yangzhou 225000, Jiangsu, ChinaDepartment of Neurology, Northern Jiangsu People's Hospital, Yangzhou 225000, Jiangsu, ChinaDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, ChinaObjective To evaluate the role of three-dimensional arterial spin labeling (3D-ASL) in the diagnosis of viral encephalitis. Methods MRI [T1WI, T2WI, diffusion-weighted imaging (DWI) and 3D-ASL] was performed in 41 patients with clinically diagnosed viral encephalitis, including 28 cases in acute phase and subacute phase with duration < 10 d and 13 cases in late subacute phase and chronic phase with duration ≥ 10 d. The positive outcomes of each MRI sequence for each patient were accounted and compared. The cerebral blood flow (CBF) and apparent diffusion coefficient (ADC) images were extracted from 3D-ASL imaging and regions of interest (ROIs) were selected. CBF and ADC values between ipsilateral side and contralateral side, between normal brain regions of ipsilateral side and contralateral side were compared respectively. Results Among 41 cases, 28 (68.29% ) showed abnormalities: T1WI hypointense signal in 3 cases, T2WI hyperintense signal in 8 cases, DWI hyperintense signal in 14 patients, 3D-ASL hyperperfusion in 27 cases and hypoperfusion in one case. The positive rates for 3D-ASL [68.29% (28/41)] were significantly higher than that of T1WI [7.32% (3/41); χ2 = 32.416, P = 0.000], T2WI [19.51% (8/41); χ2 = 19.807, P = 0.000] and DWI [34.15% (14/41); χ2 = 9.567, P = 0.004] respectively. CBF value of ipsilateral side in acute phase and subacute phase (< 10 d) was significantly higher than that of contralateral side [(83.61 ± 7.19) ml/(min·100 g) vs. (63.32 ± 4.83) ml/(min·100 g); t = 2.690, P = 0.012], while there was no significant difference in ADC value (P > 0.05). There was no significant difference for both CBF and ADC values in late subacute phase and chronic phase (≥ 10 d) between ipsilateral side and contralateral side (P > 0.05, for all). There was no significant difference for both CBF and ADC values between normal brain regions of ipsilateral side and contralateral side (P > 0.05, for all). Conclusions The main manifestation of viral encephalitis in 3D-ASL imaging was hyperperfusion in the early stage. 3D-ASL is superior to conventional MRI sequences in detection of encephalitis lesion and may contribute to the diagnosis of early viral encephalitis in clinical practice. DOI: 10.3969/j.issn.1672-6731.2018.03.006http://www.cjcnn.org/index.php/cjcnn/article/view/1749Encephalitis, viralMagnetic resonance imagingElectron spin resonance spectroscopy |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zheng-kun PENG Hong-ying ZHANG Jing-tao WU Jing YE Shou-an WANG Yao XU Jun XU |
spellingShingle |
Zheng-kun PENG Hong-ying ZHANG Jing-tao WU Jing YE Shou-an WANG Yao XU Jun XU Study on the application of three-dimensional arterial spin labeling in diagnosis of viral encephalitis Chinese Journal of Contemporary Neurology and Neurosurgery Encephalitis, viral Magnetic resonance imaging Electron spin resonance spectroscopy |
author_facet |
Zheng-kun PENG Hong-ying ZHANG Jing-tao WU Jing YE Shou-an WANG Yao XU Jun XU |
author_sort |
Zheng-kun PENG |
title |
Study on the application of three-dimensional arterial spin labeling in diagnosis of viral encephalitis |
title_short |
Study on the application of three-dimensional arterial spin labeling in diagnosis of viral encephalitis |
title_full |
Study on the application of three-dimensional arterial spin labeling in diagnosis of viral encephalitis |
title_fullStr |
Study on the application of three-dimensional arterial spin labeling in diagnosis of viral encephalitis |
title_full_unstemmed |
Study on the application of three-dimensional arterial spin labeling in diagnosis of viral encephalitis |
title_sort |
study on the application of three-dimensional arterial spin labeling in diagnosis of viral encephalitis |
publisher |
Tianjin Huanhu Hospital |
series |
Chinese Journal of Contemporary Neurology and Neurosurgery |
issn |
1672-6731 |
publishDate |
2018-03-01 |
description |
Objective To evaluate the role of three-dimensional arterial spin labeling (3D-ASL) in the diagnosis of viral encephalitis. Methods MRI [T1WI, T2WI, diffusion-weighted imaging (DWI) and 3D-ASL] was performed in 41 patients with clinically diagnosed viral encephalitis, including 28 cases in acute phase and subacute phase with duration < 10 d and 13 cases in late subacute phase and chronic phase with duration ≥ 10 d. The positive outcomes of each MRI sequence for each patient were accounted and compared. The cerebral blood flow (CBF) and apparent diffusion coefficient (ADC) images were extracted from 3D-ASL imaging and regions of interest (ROIs) were selected. CBF and ADC values between ipsilateral side and contralateral side, between normal brain regions of ipsilateral side and contralateral side were compared respectively. Results Among 41 cases, 28 (68.29% ) showed abnormalities: T1WI hypointense signal in 3 cases, T2WI hyperintense signal in 8 cases, DWI hyperintense signal in 14 patients, 3D-ASL hyperperfusion in 27 cases and hypoperfusion in one case. The positive rates for 3D-ASL [68.29% (28/41)] were significantly higher than that of T1WI [7.32% (3/41); χ2 = 32.416, P = 0.000], T2WI [19.51% (8/41); χ2 = 19.807, P = 0.000] and DWI [34.15% (14/41); χ2 = 9.567, P = 0.004] respectively. CBF value of ipsilateral side in acute phase and subacute phase (< 10 d) was significantly higher than that of contralateral side [(83.61 ± 7.19) ml/(min·100 g) vs. (63.32 ± 4.83) ml/(min·100 g); t = 2.690, P = 0.012], while there was no significant difference in ADC value (P > 0.05). There was no significant difference for both CBF and ADC values in late subacute phase and chronic phase (≥ 10 d) between ipsilateral side and contralateral side (P > 0.05, for all). There was no significant difference for both CBF and ADC values between normal brain regions of ipsilateral side and contralateral side (P > 0.05, for all). Conclusions The main manifestation of viral encephalitis in 3D-ASL imaging was hyperperfusion in the early stage. 3D-ASL is superior to conventional MRI sequences in detection of encephalitis lesion and may contribute to the diagnosis of early viral encephalitis in clinical practice.
DOI: 10.3969/j.issn.1672-6731.2018.03.006 |
topic |
Encephalitis, viral Magnetic resonance imaging Electron spin resonance spectroscopy |
url |
http://www.cjcnn.org/index.php/cjcnn/article/view/1749 |
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