本文選題：肥胖 + 線性融合�。� 參考：《醫(yī)學(xué)影像學(xué)雜志》2016年06期

【摘要】：目的探討炫速雙源CT非線性融合技術(shù)對超重或肥胖患者心臟CT成像質(zhì)量的優(yōu)化價值。方法 36位體質(zhì)指數(shù)處于超重或肥胖的患者行雙能量心臟增強(qiáng)掃描,每一位患者重建4組圖像,A組:NLB1(λ=150HU,ω=200HU),B組:NLB2(λ=70HU,ω=200HU),C組:NLB3(λ=260HU,ω=200HU),D組:NLB4(λ=260HU,ω=400HU),測量并計算上述圖像主動脈根部、右冠狀動脈中段、左冠狀動脈主干和左心室前壁的CT值、圖像噪聲、SNR、CNR。采用TWO-WAY ANOVA及TUKEY檢驗客觀評價各組圖像質(zhì)量。結(jié)果 4組圖像間除心肌CT值無統(tǒng)計學(xué)差異外(F=2.492,P=0.064),余各部位CT值、噪聲、SNR、CNR均具有統(tǒng)計學(xué)差異(P0.05)。各血管CT值B組最高,與A組均無統(tǒng)計學(xué)差異。各血管噪聲B組最小,與A組無統(tǒng)計學(xué)差異。心肌噪聲C組最小,與A組無統(tǒng)計學(xué)差異。各血管SNR A、B組較高,兩組無統(tǒng)計學(xué)差異。心肌SNR以A、C、D組較大,與B組有統(tǒng)計學(xué)差異。各血管均以D組SNR最小。心肌SNR B組最小。所有CNR均以A組最高,與B組無統(tǒng)計學(xué)差異,D組最小。結(jié)論非線性融合技術(shù)選擇合適的融合參數(shù)(λ=150HU,ω=200HU)既可以提升超重或肥胖患者冠狀動脈的強(qiáng)化效果又可以抑制冠狀動脈及心肌噪聲,進(jìn)一步提高心臟CT成像的CNR。
[Abstract]:Objective to evaluate the value of hygroscopic dual source CT nonlinear fusion technique in cardiac CT imaging quality optimization in overweight or obese patients. Methods Thirty-six patients with body mass index (BMI) who were overweight or obese underwent dual-energy cardioenhancement scans. Each patient reconstructed 4 images of group A: NLB1 (位 ~ (150) HU, 蠅 ~ (200) Hu) and group B: NLB2 (位 ~ (70) HU, 蠅 ~ (200) Hu), group C: NLB3 (位 260 HUU, 蠅 ~ (200 Hu), group D: NLB _ 4 (位 ~ (26) HUU, 蠅 ~ (400) Hu), the root of aorta and the middle segment of right coronary artery were measured and calculated. The CT value of left coronary artery and left ventricular anterior wall, the image noise of SNR and CNR. TWO-WAY ANOVA and TUKEY were used to evaluate the image quality of each group. Results there was no significant difference in CT value between the four groups except myocardial CT value (FFV 2.492P ~ (0.064). There were significant differences in CT value and SNRN CNR between the rest of the four groups (P0.05). The CT value of each blood vessel in group B was the highest, and there was no statistical difference between group A and group A. The vascular noise in group B was the least, and there was no statistical difference between group A and group A. Myocardial noise in group C was the least, and there was no statistical difference between group A and group A. The SNR Agna B group was higher than that of the control group, and there was no statistical difference between the two groups. The myocardial SNR was higher in group A Con D than that in group B. The SNR of group D was the smallest. Myocardial SNR B group was the smallest. All CNR was the highest in group A and the smallest in group D. Conclusion selecting suitable fusion parameters (位 ~ (150) HU, 蠅 ~ (200) Hu) can not only enhance the enhancement effect of coronary artery in overweight or obese patients, but also inhibit coronary artery and myocardial noise, and further improve the CNRs of cardiac CT imaging.
【作者單位】： 蘇州大學(xué)附屬第一醫(yī)院放射科;
【分類號】：R589.2;R816.2
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本文編號：2064923