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題 名 | 以正子造影/電腦斷層攝影(PET/CT)與多切面電腦斷層掃描方法收集冠狀動脈鈣化指數結果之比較=Comparison of Calcium Scoring Results from PET/CT and Multi-slices CT Acquisition |
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作 者 | 許幼青; 廖建國; 黃沛瑩; 王昱豐; | 書刊名 | 核子醫學雜誌 |
卷 期 | 21:4 2008.12[民97.12] |
頁 次 | 頁197-203 |
分類號 | 414.93 |
關鍵詞 | 鈣化指數; 心電圖同步影像擷取; PET/CT; Calcium score; Gated EKG; |
語 文 | 中文(Chinese) |
中文摘要 | 背景:本研究主要探討以正子造影/電腦斷層攝影(PET/CT)所獲得之鈣化指數是否可靠,並和以多切面電腦斷層掃描方法之相關性作比較,考量能否作爲替代方法。 方法:2007年1月至6月期間,篩選50歲以上且未做過冠狀動脈攝影術、冠狀動脈繞道手術,或主要心血管手術者,合計54人。鈣化檢查以前瞻式心電圖同步擷取影像,掃描時間爲10~20秒。利用Smart Score軟體處理影像,觀察冠狀動脈鈣化情況,並和多切面電腦斷層掃描方法做比較,以簡單線性迴歸分析探討其相關性。 結果:在LMA、LAD、LCX、RCA及總冠狀動脈之線性相關R^2值分別爲0.8138、0.5196、0.7030、0.2483及0.7573(P<0.001),回推其線性相關爲y=-20.9992+3.4754x,顯示對總冠狀動脈、LMA和LCX而言,鈣化指數線性相關不錯(R^2>0.7),惟對RCA及LAD兩血管,兩種方法之線性相關較差(R^2<0.7)。 結論:比較PET/CT造影和多切面電腦斷層掃描方法,雖然其線性相關之R^2值及r值均未達0.90以上,兩種方法所測定之鈣化指數值尚有差異,但可透過y=-20.9992+3.4754x之公式轉換,計算出以多切面電腦斷層掃描所得之鈣化指數,此不失爲一變通且方便的方法,可提供PET/CT造影更有價值的服務品質。 |
英文摘要 | Background: The purpose of this study is to identify the reliability of the calcium score obtained by PET/CT protocol as compared with traditional method by multi-slices CT scanning. Methods: From January to June, 2007, 54 patients were enrolled in this study, those had received coronary angiography, coronary artery bypass graft surgery, or cardiac surgery were not included. Gated EKG was used and the scanning time is 10~20 seconds. Smart Score software was applied for image processing and observation. Simple regression analysis was performed to compare the results of these two method. Results: Our results showed that the R2 values of the LMA, LAD, LCX, RCA and total coronary artery was 0.8138, 0.5196, 0.7030, 0.2483 and 0.7573, respectively (P <0.001). The regression equation was y = -20.9992 + 3.4754x. These results indicated that the linear correlation is good enough for LMA, LCX, and whole coronary artery (R^2>0.7), but relatively insufficient for RCA and LAD (R^2<0.7). Conclusions: Calcium score acquired form these two methods do have some difference, with both R^2 and r values less than 0.9. However, a regression equation could be deduced and a calcium score acquired from PET/CT study adapt to multi-slide CT scanning result could be calculated. This supplies valuable reference for clinical physician in PET/CT study, not only a tumor survey but also cardiac risk assessment. |
本系統中英文摘要資訊取自各篇刊載內容。