對(duì)標(biāo)準(zhǔn)體型病人行低管電壓CT肺動(dòng)脈成像的可行性研究
發(fā)布時(shí)間:2018-12-08 11:23
【摘要】:目的通過對(duì)比低管電壓CT肺動(dòng)脈成像(CTPA)與常規(guī)CTPA的影像質(zhì)量與輻射劑量,從而評(píng)價(jià)低管電壓CTPA應(yīng)用于標(biāo)準(zhǔn)體型病人的臨床價(jià)值。方法前瞻性選取我院2013年2月—2014年8月標(biāo)準(zhǔn)體型(體質(zhì)量指數(shù)≤25 kg/m2,體質(zhì)量≤80 kg)病人60例,并隨機(jī)分為2組。A、B兩組管電壓分別設(shè)置為80 k V和120 k V。管電流設(shè)置基于循環(huán)時(shí)間測(cè)試峰值。評(píng)價(jià)并對(duì)比A、B兩組影像質(zhì)量與輻射劑量,選取肺動(dòng)脈干影像質(zhì)量參數(shù)與輻射劑量進(jìn)行Pearson相關(guān)性分析。結(jié)果 A組總體肺動(dòng)脈CT值與噪聲值高于B組,差異具有統(tǒng)計(jì)學(xué)意義(P=0.000)。A組總體肺動(dòng)脈SNR和CNR與B組相比差異無統(tǒng)計(jì)學(xué)意義(分別P=0.187,P=0.309)。A組有效劑量顯著低于B組[(1.69±0.43)m Sv∶(5.63±1.84)m Sv,P=0.000]。有效劑量與CT值和噪聲值呈負(fù)相關(guān)。結(jié)論低管電壓CTPA應(yīng)用于標(biāo)準(zhǔn)體型病人可以有效減低輻射劑量,同時(shí)保證影像質(zhì)量,具有臨床應(yīng)用價(jià)值。
[Abstract]:Objective to evaluate the clinical value of low tube voltage CTPA in patients with standard shape by comparing the imaging quality and radiation dose of low tube voltage CT pulmonary artery imaging (CTPA) with conventional CTPA. Methods from February 2013 to August 2014, 60 patients with standard somatotype (BMI 鈮,
本文編號(hào):2368263
[Abstract]:Objective to evaluate the clinical value of low tube voltage CTPA in patients with standard shape by comparing the imaging quality and radiation dose of low tube voltage CT pulmonary artery imaging (CTPA) with conventional CTPA. Methods from February 2013 to August 2014, 60 patients with standard somatotype (BMI 鈮,
本文編號(hào):2368263
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