Diagnosis of acute ischaemic stroke with fluid-attenuated inversion recovery and diffusion-weighted sequences

2000 ◽  
Vol 42 (8) ◽  
pp. 602-607 ◽  
Author(s):  
C. Oppenheim ◽  
M. Logak ◽  
D. Dormont ◽  
S. Lehéricy ◽  
R. Manaï ◽  
...  
Keyword(s):  
Ischaemic Stroke ◽  
Acute Ischaemic Stroke ◽  
Inversion Recovery ◽  
Diffusion Weighted ◽  
Fluid Attenuated Inversion Recovery ◽  
Weighted Sequences ◽  
And Diffusion

scholarly journals Voxelwise computed diffusion-weighted imaging for the detection of cytotoxic oedema in brain imaging: a pilot study

2018 ◽  
Vol 31 (5) ◽  
pp. 518-522
Author(s):  
Ferdinand Seith ◽  
Holger Schmidt ◽  
Konstantin Nikolaou ◽  
Ulrike Ernemann ◽  
Georg Bier
Keyword(s):  
Diffusion Coefficient ◽  
Apparent Diffusion Coefficient ◽  
Ischaemic Stroke ◽  
Brain Imaging ◽  
Acute Ischaemic Stroke ◽  
Diffusion Weighted Imaging ◽  
Diffusion Weighted ◽  
Coefficients Of Variation ◽  
Apparent Diffusion ◽  
Fluid Attenuated Inversion Recovery

Aim To evaluate voxelwise computed diffusion-weighted imaging (vcDWI) for the detection of cytotoxic oedema in brain imaging and to quantify the benefit of lesion contrast in comparison to standard b = 1000 s/mm2 by the example of acute ischaemic stroke. Materials and methods A retrospective evaluation of 66 patients (63 ± 15.9 years) suspected for acute ischaemic stroke who received diffusion-weighted magnetic resonance imaging and fluid-attenuated inversion recovery sequence. A neuroradiologist evaluated all examinations for acute ischaemic stroke based on diffusion-weighted imaging, the apparent diffusion coefficient and fluid-attenuated inversion recovery (reference standard) and 6 weeks later the vcDWI in a randomised manner. Time of analysis was noted. Signal intensities were acquired in lesions, in healthy tissue as well as in the cerebrospinal fluid. Contrast ratios and coefficients of variation were computed. Results A total of 218 lesions was found in 46/66 patients. vcDWI identified all patients and lesions correctly. The median evaluation time was 36 seconds (4–126 s) for the vcDWI and 44 seconds (9–186 s; P < 0.001) for the diffusion-weighted imaging/apparent diffusion coefficient reading. The contrast ratio in vcDWI (mean value 2.57, range 1.73–4.11) was higher than in b = 1000 s/mm2 (2.33, 0.83–3.85, P = 0.03) and the apparent diffusion coefficient map (1.83, 1.00–3.00, P < 0.001), respectively. Coefficients of variation in lesions and tissue did not differ significantly between vcDWI and b = 1000 s/mm2 ( P = 0.81/ P = 0.26). The signal intensity of cerebrospinal fluid was lower in vcDWI than in b = 1000 mm2/s (0.08 and 34.8, P < 0.001). Conclusion It could be shown that vcDWI has the potential to accelerate the detection of diffusion-restricted lesions in neuroimaging by improving the contrast ratios and reducing the T2 shine-through effect in comparison to standard diffusion-weighted imaging in brain imaging.

Rhombencephalitis in Children: Diffusion Magnetic Resonance Imaging (MRI) Correlation With Clinical Outcomes

2020 ◽  
Vol 35 (6) ◽  
pp. 404-409
Author(s):  
Alex Mun-Ching Wong ◽  
Chih-Hua Yeh ◽  
Jainn-Jim Lin ◽  
I-Jun Chou ◽  
Kuang-Lin Lin
Keyword(s):  
Clinical Outcomes ◽  
Diffusion Weighted Imaging ◽  
Multivariate Logistic Regression Analysis ◽  
Inversion Recovery ◽  
Unfavorable Outcome ◽  
Multivariate Logistic Regression ◽  
Diffusion Weighted ◽  
Disturbance Of Consciousness ◽  
Outcome Group ◽  
Fluid Attenuated Inversion Recovery

In children with rhombencephalitis, neuroimaging abnormalities have been infrequently correlated with clinical outcome. We investigated whether magnetic resonance (MR) neuroimaging studies could predict clinical outcomes and disturbance of consciousness in patients with rhombencephalitis. We retrospectively analyzed the MR studies of 19 pediatric patients with rhombencephalitis (median age: 4.2 years, range 0.5-17; sex: 32% male). Fluid-attenuated inversion recovery imaging and diffusion-weighted imaging findings were graded to create imaging scores according to the extent of imaging abnormality. Clinical outcomes in the first week and 12th month were graded by using Glasgow Outcome Scale scores (1-5) and dichotomized to unfavorable or favorable outcome. Correlations of the imaging scores with the clinical outcomes and with disturbance of consciousness were assessed by using multivariate logistic regression analysis. No significant correlation was found between fluid-attenuated inversion recovery score or diffusion-weighted imaging score ( P = .608, P = .132, respectively) and disturbance of consciousness. In the first week, the unfavorable outcome group (n = 11) had significantly higher diffusion-weighted imaging score than did the favorable outcome group (n = 8) (Mann-Whitney U test, P = .005). Multivariate logistic regression analysis showed that the diffusion-weighted imaging score (odds ratio, 18.182; 95% confidence interval: 1.36, 243.01; P = .028) was significantly associated with unfavorable outcome. In the 12th month, the fluid-attenuated inversion recovery score or diffusion-weighted imaging score ( P = .994, P = .997, respectively) were not significantly associated with unfavorable outcome. Patients with rhombencephalitis who have a higher diffusion-weighted imaging score are more likely to have an unfavorable 1-week clinical outcome.

The usefulness of diffusion-weighted/fluid-attenuated inversion recovery imaging in the diagnostics and timing of lacunar and nonlacunar stroke

2014 ◽  
Vol 56 (10) ◽  
pp. 825-831 ◽  
Author(s):  
Grzegorz Witkowski ◽  
Agnieszka Piliszek ◽  
Halina Sienkiewicz-Jarosz ◽  
Agnieszka Skierczyńska ◽  
Renata Poniatowska ◽  
...  
Keyword(s):  
Inversion Recovery ◽  
Inversion Recovery Imaging ◽  
Diffusion Weighted ◽  
Fluid Attenuated Inversion Recovery

scholarly journals Diffusion-weighted lesions in acute ischaemic stroke patients with migraine

2014 ◽  
Vol 129 ◽  
pp. 41-46 ◽  
Author(s):  
H. Øygarden ◽  
C. E. Kvistad ◽  
M. Bjørk ◽  
L. Thomassen ◽  
U. Waje-Andreassen ◽  
...  
Keyword(s):  
Ischaemic Stroke ◽  
Acute Ischaemic Stroke ◽  
Stroke Patients ◽  
Diffusion Weighted
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