Comparison of compressed sensing diffusion spectrum imaging and diffusion tensor imaging in patients with intracranial masses

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• 作者：Robert J Young^a ; ^d ; ¹ ; ^{youngrobert@gmail.com} ; Ek T Tan^e ; ¹ ; Kyung K Peck^a ; ^b ; Mehrnaz Jenabi^a ; Sasan Karimi^a ; ^d ; Nicole Brennan^a ; Jennifer Rubel^a ; John Lyo^a ; ^d ; Weiji Shi^c ; Zhigang Zhang^c ; Marcel Prastawa^e ; Xiaofeng Liu^e ; Jonathan I Sperl^e ; Robin Fatovic^a ; Luca Marinelli^e ; Andrei I Holodny^a ; ^d
• 关键词：Diffusion tensor ; Compressed-sensing ; Diffusion spectrum
• 刊名：Magnetic Resonance Imaging
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：36
• 期：Complete
• 页码：24-31
• 全文大小：1095 K
• 卷排序：36

文摘

To compare compressed diffusion spectrum imaging (CS-DSI) with diffusion tensor imaging (DTI) in patients with intracranial masses. We hypothesized that CS-DSI would provide superior visualization of the motor and language tracts.Materials and methodsWe retrospectively analyzed 25 consecutive patients with intracranial masses who underwent DTI and CS-DSI for preoperative planning. Directionally-encoded anisotropy maps, and streamline hand corticospinal motor tracts and arcuate fasciculus language tracts were graded according to a 3-point scale. Tract counts, anisotropy, and lengths were also calculated. Comparisons were made using exact marginal homogeneity, McNemar's and Wilcoxon signed-rank tests.ResultsReaders preferred the CS-DSI over DTI anisotropy maps in 92% of the cases, and the CS-DSI over DTI tracts in 84%. The motor tracts were graded as excellent in 80% of cases for CS-DSI versus 52% for DTI; 58% of the motor tracts graded as acceptable in DTI were graded as excellent in CS-DSI (p = 0.02). The language tracts were graded as excellent in 68% for CS-DSI versus none for DTI; 78% of the language tracts graded as acceptable by DTI were graded as excellent by CS-DSI (p < 0.001). CS-DSI demonstrated smaller normalized mean differences than DTI for motor tract counts, anisotropy and language tract counts (p ≤ 0.01).ConclusionCS-DSI was preferred over DTI for the evaluation of motor and language white matter tracts in patients with intracranial masses. Results suggest that CS-DSI may be more useful than DTI for preoperative planning purposes.