本文關(guān)鍵詞： 小兒先天性心臟病 心電門控 迭代重建 輻射劑量　出處：《中國CT和MRI雜志》2016年11期 　論文類型：期刊論文

【摘要】：目的 探討優(yōu)化低劑量CTA方案在小兒先天性心臟病(CHD)術(shù)前檢查的臨床價值。方法 CHD患兒139例(年齡1天-6歲),根據(jù)患兒就診時間分別采用前門控和高級混合迭代重建技術(shù)(i Dose4)、前門控和濾波反投影重建(FBP)、非門控和FBP進行CTA檢查。采用方差分析及Post-Hoc雙樣本T檢驗對每組患兒有效射線輻射劑量及圖像質(zhì)量進行對比分析;并以手術(shù)結(jié)果為診斷標(biāo)準(zhǔn),采用CTA診斷結(jié)果與超聲心動圖(UCG)診斷結(jié)果進行符合一致性分析。結(jié)果 1.有效射線輻射劑量:前門控i Dose4組較前門控FBP組降低13.8%、前門控i Dose4組較非門控FBP組降低23.5%(P0.05)。2.圖像質(zhì)量評估:前門控i Dose4組、前門控FBP組、非門控FBP組分別為:Ⅲ級36、57、12例;Ⅱ級0、25、8例,(χ~2=15,.879,P0.05)。3.經(jīng)手術(shù)治療的CHD患兒(n=102),術(shù)前CTA、UCG診斷結(jié)果與手術(shù)結(jié)果對比:CTA總診斷符合率94.5%(P0.001),UCG診斷符合率90.4%(P0.001)。結(jié)論 低劑量前門控i Dose4 CTA技術(shù)在小兒CHD的術(shù)前應(yīng)用具有重要臨床意義。
[Abstract]:Objective to evaluate the clinical value of optimizing low dose CTA regimen in preoperative examination of congenital heart disease in children. Methods 139 patients with CHD (age 1 day 6 years old) were treated with front door control and advanced mixed replacement according to the time of treatment. Generation reconstruction technique was used to examine CTA. The effective radiation dose and image quality of each group were compared by variance analysis and Post-Hoc double sample T test. And based on the results of surgery as diagnostic criteria, Results 1. Effective radiation dose: Qianmen control I Dose4 group was 13. 8 lower than the front door control FBP group, and the front door control I Dose4 group was lower than the non-gated FBP group. Image quality assessment: Qianmen control I Dose4 group, In front door control FBP group and non gated FBP group, there were 12 cases of 鈪，

本文編號：1537540