Journal
EUROPEAN RADIOLOGY
Volume 31, Issue 9, Pages 6411-6418Publisher
SPRINGER
DOI: 10.1007/s00330-021-07751-x
Keywords
Cognitive dysfunction; Alzheimer disease; Siderosis; Brain; Magnetic resonance imaging
Funding
- JSPS KAKENHI [16 K10314, K08104]
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Our study found that SWI detected more cSS sulci compared to 3D DIR and 3D FLAIR. While the sensitivity and specificity for detecting sulcal hyperintensity were the same between 3D FLAIR and 3D DIR (87.5%/100%), 3D DIR detected a greater number of cSS sulci than 3D FLAIR.
Objectives Our aim was to evaluate the detectability of cortical superficial siderosis (cSS) by 3D FLAIR and 3D DIR images in comparison with the SWI images in patients with cognitive dysfunction. Methods We studied 246 patients with cognitive dysfunction (144 women, 102 men; mean age: 75.5 +/- 7.53 years) who visited a memory clinic at our hospital and underwent MR examinations at 3 T. Specifically, 16 patients with Alzheimer disease (AD) (n = 11) and AD with cerebrovascular disease (n = 5) manifested cSS based on SWI. Each set of MR images (3D FLAIR and 3D DIR) was reviewed by two reviewers separately for the detection of sulcal hyperintensity that suggested cSS. Results SWI detected a greater number of cSS sulci than 3D DIR and 3D FLAIR. The sensitivity and specificity for the detection of sulcal hyperintensity were the same between 3D FLAIR and 3D DIR (87.5%/100%). However, 3D DIR detected a greater number of cSS sulci than 3D FLAIR (p = .005). Conclusions Our study showed that 3D DIR and 3D FLAIR can detect sulcal hyperintensity related to cSS although they are less sensitive to cSS lesions than SWI.
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