Title: Evaluation of contrast-enhanced FLASH-T_1 WI in leptomeningeal lesions
Abstract: Objective:To evaluate the value of contrast-enhanced FLASH-T1 weighted imaging in the detection of different leptonmeningeal lesions.Methods:Contrast-enhanced FLASH-T1 weighted imaging manifestation of 23 patients with a variety of leptomeningeal lesions were retrospectively reviewed.Among there were 11 cases with viral infection,5 cases tuberculous infection,3 cases with leptomeningeal metastasis,2 cases with moyamoya disease and 2 cases with Sturge-Weber syndrome.The Results were comparaed with nonenhanced FLAIR.Results:The leptomeningeal enhancement in 22 of 23 cases(95.65%) with leptomeningeal lesions were detected on contrast-enhanced FLASH-T1 weighted imaging.Among the 12 cases with fine linear enhancemen,including 9 cases with viral infection,1 cases with leptonmeningeal metastasis and 2 cases with moyamoya disease;the 9 cases with thick linear enhancement,including 2 cases with viral infection,4 cases with tuberculous infection and 2 cases with Sturge-Weber syndrome;The 2 cases with leptonmeningeal metastasis showed as nodular enhancement.In sulcal hyperintensity in 14 of 23 cases (60.87%) were detected on nonenhanced FLAIR images,Among the 5 cases with viral infection,5 cases tuberculous infection,2 cases with leptomeningeal metastasis and 2 cases with moyamoya disease.Conclusion:Contrast-enhanced FLASH-T1 weighted imaging can improve the detection of leptomeningeal lesions.Both contrast enhanced FLASH-T1 weighted imaging and nonenhanced FLAIR can assessing characteristic of different leptonmeningeal lesions,are helpful for early clinical diagnosis and differentiation.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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