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- W2364190032 abstract "Objective: To evaluate the value of apparent diffusion coefficients(ADC) in Magnetic Resonance diffusion weighted imaging (MR DWI) with echo-planar technique in depicting the tumor cellularity and grading of astrocytomas. Methods: Thirty-four patients with astrocytomas(18 male, 16 female, ages from 10-73 with average of 38 41) were examined by MRI and proved by surgery and pathology, and the number of gradeⅠ-Ⅱ(low-grade) and grade Ⅲ-Ⅳ(high-grade) is 26 and 8 respectively. ADC values of astrocytomas were determined on MR DWI. Cellularity of astrocytomas was analyzed with Adobe Photoshop 7 0 software. Results: Mean ADC values of high-grade astrocytomas(7 34±2 95)×10 -4mm 2/s were significantly different from that of low-grade astrocytomas(13 76±3 31)×10 -4mm 2/s(t= 4 913,P0 001). Cellularity of high-grade astrocytomas(19 81±9 73)% were significantly higher than that of low-grade astrocytomas(4 74±2 96)%(t= 4 32,P=0 003). ADC values of astrocytomas significantly negatively correlated with their cellularities(r=-0 535,P=0 001). Conclusion: The cellularities of astrocytomas contribute very much to ADC values in MR DWI. MR DWI is very valuable in predicting and evaluating the cellularity of astrocytomas. MR DWI might have a potential in predicting the degree of astrocytomas." @default.
- W2364190032 created "2016-06-24" @default.
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- W2364190032 date "2004-01-01" @default.
- W2364190032 modified "2023-09-24" @default.
- W2364190032 title "Value of Magnetic Resonance Diffusion Weighted Imaging in Evaluating Cellular Density of Astrocytomas" @default.
- W2364190032 hasPublicationYear "2004" @default.
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