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題 名 | Diffusion-Weighted MR Imaging for Differentiating Acute Benign from Pathologic Compression Fractures: A Reinvestigation of the Usefulness of Diffusion-Weighted Imaging=以擴散加權磁振造影影像區分良性及病理性急性脊椎壓迫性骨折:重新探討擴散加權影像之實用性 |
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作 者 | 曾芸軒; 張天祐; 黃國書; 藍功堯; 侯武郁; 沈宏儒; | 書刊名 | 中華放射線醫學雜誌 |
卷 期 | 29:3 2004.06[民93.06] |
頁 次 | 頁109-115 |
分類號 | 416.14 |
關鍵詞 | 擴散加權造影; 骨折; 磁振造影; 脊椎; Magnetic resonance; MR; Diffusion study; Fractures; Spine; |
語 文 | 英文(English) |
中文摘要 | 這個研究的主要目的,是要重新評估擴散加權磁振造影影像,在鑑別良性和惡性的急性脊椎壓迫性骨折時之實用性。經由傳統的磁振造影檢查,我們在33位病患身上發現了42處急性脊椎壓迫性骨折之病灶。我們利用steady-state free precession(SSFP)擴散加權磁振造影影像來檢視這些病灶。在這42個病灶中,有24個是良性的、因骨質疏鬆引起的壓迫性骨折;另外的18個是因惡性腫瘤轉移造成的病理性骨折。所有的病灶都經由手術取得的組織病理分析,或是後續的臨床及磁振造影追蹤,以得到確實的診斷。這些病灶在磁振造影影像上的訊號表現,由二位不知道其最終診斷的放射科醫師,分別加以評估並給予分數。在擴散加權磁振造影影像上,所有的良性急性脊椎壓迫性骨折,相較於鄰近的正常脊椎骨,呈現出低訊號或等訊號的變化。這代表了病灶處的骨髓水腫現象。相反的,絕大多數的病理性骨折呈現出高訊號的變化,反應了骨髓被腫瘤細胞所浸潤佔據的狀況。我們並以Student’s t test 對這兩組病灶的訊號強度分數進行了統計學分析,結果發現二組病灶在擴散加權磁振造影影像上的訊號強度有明顯的差異(P值小於0.01)。我們的研究結果,證實了用擴散加權磁振造影影像來鑑別良性和惡性的急性脊椎壓迫性骨折,是一個非常有效且可實際運用於日常工作中的方法。 |
英文摘要 | The aim of this study was to reinvestigate the usefulness of diffusion-weighted MR imaging for differentiating acute benign from neoplastic vertebral compression fractures. Thirty-three patients with 42 lesions of acute vertebral compression fractures on conventional MR imaging were examined with diffusion-weighted MR imaging using a steady-state free precession (SSFP) sequence. In 42 lesions, 24 lesions were benign osteoporotic compression fractures; the remaining 18 lesions were pathologic fractures due to metastatic tumor infiltration. All lesions were confirmed by surgical histopathology, clinical or MRI follow-up. The signal characteristics of all lesions were investigated and scored by two independent radiologists blinded to clinical information. On diffusion-weighted imaging, all lesions with acute benign fractures showed hypo- or isointense relative to normal vertebral body reflecting edema in the vertebral marrow. Most lesions with pathologic fractures showed hyperintense relative to normal vertebral body reflecting tumor infiltration in the vertebral marrow. Statistical analysis was performed using Student’s t test, showing that there were significant difference in signal-intensity scores on diffusion-weighted imaging in these two groups (P < 0.01). Our results confirmed that diffusion-weighted MR imaging could be a useful and practicable tool on daily works in differentiating acute benign from pathologic compression fractures. |
本系統中英文摘要資訊取自各篇刊載內容。