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Assessment of quantitative methods for enhancement measurement on vessel wall magnetic resonance imaging evaluation of intracranial atherosclerosis
نویسنده:
سال انتشار: p2019
تعداد صفحات: 8
زبان فایل: انگلیسی
فرمت فایل: pdf
حجم فایل: 1.5MB
رمز فایل: www.ketabdownload.com
قیمت: 100,000ريال

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DOI: 10.1007/s00234-019-02167-3

Abstract: -------- Purpose: Quantitative measures of vessel wall magnetic resonance imaging (vwMRI) for the evaluation of intracranial atherosclerotic disease (ICAD) offers standardization not available with previously used qualitative approaches that may be difficult to replicate. -------- Methods: vwMRI studies performed to evaluate ICAD that had caused a stroke were analyzed. Two blinded reviewers qualitatively rated culprit lesions for the presence of enhancement on T1 delay alternating with nutation for tailored excitation (DANTE) SPACE images. At least 3 months later, quantitative analysis was performed of the same images, comparing lesion enhancement to reference structures. Cohen’s kappa and intraclass correlation coefficients were calculated to assess agreement. Ratios of enhancement of lesions to references were compared to qualitative ratings. -------- Results: Studies from 54 patients met inclusion criteria. A mean of 49 (90.7%) lesions were qualitatively rated as enhancing, with good inter-rater agreement (κ = 0.783). Among reference structure candidates, low infundibulum demonstrated the highest inter-rater agreement on pre- and post-contrast imaging. The ratio of percentage increase in plaque signal following contrast to the same measure in low infundibulum demonstrated the highest agreement with qualitative assessment, with highest agreement seen with a ratio of 0.8 set as a threshold (κ = 0.675). -------- Conclusion: Quantitative metrics can yield objective data to better standardize techniques and acceptance of vwMRI evaluation of ICAD. The low infundibulum had the highest inter-rater agreement on both pre- and post-contrast images and is best suited as a normally enhancing reference structure. Such quantitative techniques should be implemented in future research of vwMRI for the evaluation of ICAD

Keywords: Intracranial atherosclerosis - Vessel wall - Imaging - MRI - Quantitative analysis


Assessment of quantitative methods for enhancement measurement , on vessel wall magnetic resonance imaging evaluation of intracranial atherosclerosis, دانلود مقاله ارزیابی روش های کمی برای سنجش تقویت , در ارزیابی تصویربرداری رزونانس مغناطیسی دیواره رگ آترواسکلروز داخل جمجمه ای, Intracranial atherosclerosis , Vessel wall , Imaging , MRI , Quantitative analysis
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