کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10097429 | 1609873 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Role of diffusion weighted imaging in differentiation of intracranial tuberculoma and tuberculous abscess from cysticercus granulomas-a report of more than 100 lesions
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کلمات کلیدی
موضوعات مرتبط
علوم پزشکی و سلامت
پزشکی و دندانپزشکی
رادیولوژی و تصویربرداری
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Restricted diffusion is noted in a large number of non-stroke conditions including tuberculoma. The purpose of this study was to demonstrate spectrum of diffusion weighted imaging (DWI) abnormalities in tuberculomas and tuberculous abscess and to distinguish these from degenerating neurocysticercosis. Seventy tuberculomas and tuberculous abscesses in 30 patients were categorized in three groups depending on the intensity in the core of the lesion on T2 weighted images. Mean apparent diffusion coefficient (ADC) was calculated from the core as well as from the wall of the lesions. Forty-five lesions of neurocysticercosis in different stage of evolution in 12 patients were also included for comparison. The mean ADC value from the core of the T2 hypointense lesions was significantly higher compared to the wall ((1.24 ± 0.32) Ã 10â3 and (1.06 ± 0.15) Ã 10â3 mm2/s, respectively), while mean ADC value from the core of mildly T2 hyperintense lesions was significantly lower compared to the wall ((0.80 ± 0.08) Ã 10â3 and (1.08 ± 0.13) Ã 10â3 mm2/s, respectively). Truly T2 hyperintense lesions were divided into two subgroups, tuberculomas and tuberculous abscesses; ADC values from the core and the wall of these lesions were (0.74 ± 0.13) Ã 10â3, (0.61 ± 0.08) Ã 10â3 and (1.03 ± 0.14) Ã 10â3, (1.08 ± 0.14) Ã 10â3 mm2/s, respectively, and was significantly lower in core as compared to the wall. However, there was no significant difference between ADC values of the tuberculous abscess and the hyperintense tuberculomas. Vesicular and degenerating stages of cysticercus cysts from the core showed ADC values of (1.66 ± 0.29) Ã 10â3 and (1.51 ± 0.23) Ã 10â3 mm2/s, respectively, and were significantly higher than the core of all groups of tuberculomas and tuberculous abscess. We conclude that addition of DWI to routine imaging protocol may help in differentiation of tuberculous lesions from degenerating cysticercus granuloma.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Radiology - Volume 55, Issue 3, September 2005, Pages 384-392
Journal: European Journal of Radiology - Volume 55, Issue 3, September 2005, Pages 384-392
نویسندگان
Rakesh K. Gupta, Mahesh Prakash, Asht M. Mishra, Mazhar Husain, Kashi N. Prasad, Nuzhat Husain,