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題名 | No Inter-observer Variability in [9358]F-FDG PET Maximal Standardized Uptake Value Measurements in Lymphoma=氟-18-去氧葡萄糖正子斷層掃描之Maximum SUV測量在淋巴癌無測量者間變異 |
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作者姓名(中文) | 黃玉兒; 陳志峰; 黃郁傑; 蒲永林; 李強; | 書刊名 | 核子醫學雜誌 |
卷期 | 22:1 2009.03[民98.03] |
頁次 | 頁1-9 |
分類號 | 414.93 |
關鍵詞 | 測量者間變異; 氟-18-去氧葡萄糖; 正子電腦斷層掃描; 淋巴癌; SUV; Inter-observer variability; [9358]F-fluorodeoxyglucose; Positron emission tomography; Standardized uptake value; Lymphoma; |
語文 | 英文(English) |
中文摘要 | 背景:氟-18-去氧葡萄糖(18F-FDG)正子斷層掃描(PET)之standardized uptake values (SUV)封淋巴癌病患的診斷和追蹤很重要。然而,许多和病人及技術相關的因子可影響SUV的測量。本研究之目的在於决定淋巴癌病患其18F-FDG PET的SUV值之測量者简燮異。據我们所知,目前尚未有這樣的研究。 方法:我們回溯研究48位淋巴癌病患的54個氟-18-FDG PET/CT。由三位測量者獨立地測量SUV(下標 max)及SUV mean。測量區(ROI)包含腫瘤的所有連續性transaxial的切面。SUV值之到量者間燮異由變異系数(COV)來表示。SUV(下標 max)和SUV(下標 mean)之間的相關性也由皮爾森積差相關係數(the Pearson correlation coefficient)分析。 結果:三個測量者測得的SUV(下標 max)完全相同。三個測量者測量54個18F-FDG PET/CT的SUV(下標 max)的平均值及镖准差爲10.31±6.32。三個測量者測量54個18F-FDG PET/CT的SUV(下標 mean)的平均值及標准差则分别爲5.51±3.0,4.91±2.47舆5.25±2.76。SUV max與SUV(下標 mean)的整體到測量者間變異以COV的方均根(root-mean-square)值来表示分别爲0%和9.42%。三個測量者測量之平均SUV(下標 max)和平均SUV(下標 mean)在统計學上有好的相關性(r=0.949;P<0.0)。 結論:整個淋巴癌腫瘤體積的SUV(下標 max)的測量能達到没有任何測量者間變異,而其值也舆SUV(下標 mean)具有高度相關性。這些结果顯示,SUV(下標 max)對於淋巴癌病患進行18F-FDG PET检查,是一個不受測量者影響的可靠參数。 |
英文摘要 | Background: 18F-FDG PET standardized uptake values (SUV) is important for the diagnosis and follow-up for lymphoma patients. However, numerous patient-and technique-related factors could affect the measurement of SUV. This study was performed to determine the inter-observer variability of 18F-FDG PET SUV in lymphoma patients. To our knowledge, there is no study to date about this issue. Methods: We retrospectively reviewed 54 18F-FDG PET/CT scans in 48 consecutive patients with lymphoma. The SUV(subscript max) and SUV mean were measured independently by three readers. The regions of interest were drawn manually around the tumors on all of the consecutive transaxial slices that contained the tumors. The inter-observer variability was determined by the use of the coefficient of variation (COV). The Pearson correlation coefficient for the SUV(subscript max) and SUV mean was also performed. Results: The SUV(subscript max) by the three readers were identical. The mean ± the SD of the SUV(subscript max) in the 54 scans measured by the three readers was 10.31 ± 6.32. The mean ± the SD of the SUV(subscript mean) in the 54 scans measured by the three readers were 5.51 ± 3.0, 4.91 ± 2.47 and 5.25 ± 2.76, respectively. The overall interobserver variability as described by the root-meansquare of the COVs of the SUV(subscript max) and SUV(subscript mean) was 0% and 9.42%, respectively. There was good correlation between the average of SUV(subscript max) and the average of SUV mean from the three readers (r=0.949; P<0.01). Conclusion: The SUV max in a tumor volume can be calculated without any inter-observer variation and is highly correlated with the SUV mean. These findings indicate the SUV max is a reliable parameter in the 18F-FDG-PET imaging of lymphoma. |
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