本文選題：常規(guī)掃描　切入點(diǎn)：雙能　出處：《影像診斷與介入放射學(xué)》2016年05期

【摘要】：正病例資料隨機(jī)納入A、B兩組一般情況無(wú)差異的患者,采用圓形ROI,放置于待測(cè)血管截面的中心區(qū)域,測(cè)量頸總動(dòng)脈分叉處、頸內(nèi)動(dòng)脈、大腦中動(dòng)脈MI段(middle cerebral artery,MCA)及同層面頸內(nèi)靜脈的CT值。計(jì)算頸總動(dòng)脈與頸內(nèi)靜脈CT值的差值(D值),評(píng)價(jià)雙能CT兩種掃描方案的強(qiáng)化效果及靜脈污染程度。在同層面圖像上測(cè)量同側(cè)胸鎖乳頭肌、豎脊肌、顳肌的CT值作為背景信號(hào)(SI背景)。放置3.0 cm2以上ROI于身體同側(cè)的空氣內(nèi),
[Abstract]:The data of positive cases were randomly included in two groups of patients with no difference in general conditions. The patients were placed in the central area of the cross section of the blood vessel to be measured by circular ROI, and the internal carotid artery was measured at the bifurcation of the common carotid artery, the internal carotid artery, and the internal carotid artery. Ct value of middle cerebral artery and internal jugular vein in middle cerebral artery. The difference between CT value of common carotid artery and internal jugular vein was calculated and D value was calculated to evaluate the enhancement effect and the degree of venous contamination of two kinds of dual-energy CT scanning schemes. In the same plane, the CT value of the common carotid artery and the internal jugular vein was calculated and the degree of venous contamination was evaluated. The ipsilateral sternoclavicular papilla muscle was measured on the image. The CT value of erector spinal muscle and temporal muscle was used as background signal for SI background. ROI was placed in the air of the same side of the body for more than 3.0 cm2.
【作者單位】： 武漢第一醫(yī)院放射科;華中科技大學(xué)同濟(jì)醫(yī)學(xué)院附屬協(xié)和醫(yī)院放射科;
【分類(lèi)號(hào)】：R816.1

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