第3代雙源CT大螺距70kV管電壓15ml對比劑用量模式在CT肺動脈成像中的應(yīng)用
[Abstract]:Objective to evaluate the application value of the third generation dual-source CT with large pitch 70 kV tube voltage of 15 ml contrast medium in CT pulmonary artery imaging (CTPA). Methods 70 patients with pulmonary embolism were randomly divided into two groups: (1) A group (n = 35) underwent routine CTPA scan (120 kV,80 ml contrast agent); (2) Group B (NM35) was given a large pitch 70 kV tube voltage of 15 ml. The CT values and standard deviations of pulmonary trunk, apical segment of right lung, pulmonary artery of posterior basal segment of right lower lobe, chest air and back muscle of all patients were measured. The signal-to-noise ratio (SNR) (SNR), was calculated. Contrast noise ratio (CNR) and effective dose (ED). For each patient The pulmonary artery images were evaluated by two physicians. The image quality of the two groups was compared with the non-parametric grade test of independent samples, and the Kappa (魏) value was calculated to evaluate the consistency of the image quality scores between the two groups. The difference of CT, SNR,CNR and ED between the two groups was analyzed by t test. Results the pulmonary artery trunk [(300.62 鹵77.54) HU vs (332.80 鹵102.80) HU;t=-1.53,P=0.13] and the right superior lobar segment pulmonary artery [(361.72 鹵84.92) HU vs (325.37 鹵87.86) HU;] in group A and B were found in the main pulmonary artery [(300.62 鹵77.54) HU vs (332.80 鹵102.80) HU;t=-1.53,P=0.13]. CT value of pulmonary artery of posterior basal segment of right lower lobe [(359.54 鹵89.61) HU vs (318.26 鹵87.19) HU;] There was no significant difference between the two groups (22.81 鹵6.05 vs 19.80 鹵6.60) and pulmonary artery (22.65 鹵6.37 vs 19.28 鹵6.63) in the posterior basal segment of the right lower lobe. The subjective quality scores of the two groups were 1 (1 / 1) and 1 (1 / 1), respectively, and there was no significant difference between the two groups (ZP0. 08) (P < 0. 93), the CNR was significantly higher than that of group B (P < 0. 03), and the subjective quality scores of group A and B were 1 (1 / 1) and 1 (1 / 1), respectively. The consistency of image quality between the two physicians was very good (魏 = 0.87P0. 01). A ED was (4. 33 鹵1. 80) m Sv,) significantly higher than that of B group (0. 92 鹵0. 23) m Sv (t0. 72P0. 00). The ED value of group B was about 79% lower than that of group A. Conclusion the third generation dual-source CT can be used to detect the high pitch 70 kV tube voltage 15 ml contrast medium mode, and the image can be obtained to meet the diagnostic needs and the radiation dose can be greatly reduced.
【作者單位】: 中國醫(yī)學(xué)科學(xué)院北京協(xié)和醫(yī)學(xué)院北京協(xié)和醫(yī)院放射科;
【基金】:衛(wèi)生公益性行業(yè)科研專項項目(201402013)~~
【分類號】:R563.5;R816.4
【相似文獻】
相關(guān)期刊論文 前10條
1 沈進;閻嵐;韓丹;;100kV管電壓結(jié)合電流自動調(diào)節(jié)技術(shù)肺靜脈成像的臨床應(yīng)用[J];中國醫(yī)學(xué)科學(xué)院學(xué)報;2010年06期
2 田國良;投照工作中管電壓的選擇[J];實用放射學(xué)雜志;1986年03期
3 陳建方;X線機高壓變壓器偏磁化對管電壓的影響[J];中國醫(yī)學(xué)物理學(xué)雜志;1996年03期
4 周鳳蘭;張偉;毛毳;周全紅;溫智勇;;CR攝影中肋骨影像的顯示與管電壓值相關(guān)性探討[J];中國中西醫(yī)結(jié)合影像學(xué)雜志;2006年03期
5 張越;萬業(yè)達;何岸葦;傅菲;王楠;;不同管電壓下周圍結(jié)構(gòu)對CT值測量影響的研究[J];天津醫(yī)科大學(xué)學(xué)報;2013年03期
6 石蘊生,于渤源,王偉,果連貴,王關(guān),李華祥;3000TECT機kV、mAs值的3次測試[J];中華放射醫(yī)學(xué)與防護雜志;1999年06期
7 趙文海,施振安;X線攝影應(yīng)根據(jù)診斷需求選擇適宜的管電壓[J];中國鄉(xiāng)村醫(yī)藥;2001年04期
8 孫峰;張夢龍;朱海濤;;數(shù)字X線機常規(guī)輸出穩(wěn)定性的測試[J];醫(yī)學(xué)影像學(xué)雜志;2008年04期
9 K.J.Chang;D.B.Caovan;D.J.Grand;W.Huda;W.W.Mayo-Smith;賓鋒利;;減少CT結(jié)腸成像中的輻射劑量:降低管電壓到100kV[J];國際醫(yī)學(xué)放射學(xué)雜志;2013年03期
10 于朝陽;盧萬玲;翟淼;馬士成;呂鳳嬌;;數(shù)字X線攝影管電壓對影像質(zhì)量、照射劑量的影響[J];山東醫(yī)藥;2013年41期
相關(guān)會議論文 前5條
1 劉云福;牛延濤;張宗銳;;數(shù)字X線攝影系統(tǒng)探測器成像性能與管電壓的關(guān)系探討[A];2010中華醫(yī)學(xué)會影像技術(shù)分會第十八次全國學(xué)術(shù)大會論文集[C];2010年
2 彭文獻;彭天舟;葉小琴;金光波;王上東;;X線管電壓對物質(zhì)CT值影響的研究[A];中華醫(yī)學(xué)會醫(yī)學(xué)工程學(xué)分會第十次學(xué)術(shù)年會暨2009中華臨床醫(yī)學(xué)工程及數(shù)字醫(yī)學(xué)大會論文集[C];2009年
3 彭文獻;徐秀芳;陳益紅;孫京軒;朱姬瑩;黃光輝;黃凱;劉蕊;;X-CT管電壓對生物組織CT值影響的動物實驗研究[A];2013年浙江省放射學(xué)學(xué)術(shù)年會論文集[C];2013年
4 汪浩;劉義軍;;降低CT輻射增強防護意識[A];2009中華醫(yī)學(xué)會影像技術(shù)分會第十七次全國學(xué)術(shù)大會論文集[C];2009年
5 王金峰;李劍;尤志軍;;自動觸發(fā)技術(shù)在頭頸部雙能量成像的應(yīng)用[A];2010中華醫(yī)學(xué)會影像技術(shù)分會第十八次全國學(xué)術(shù)大會論文集[C];2010年
相關(guān)碩士學(xué)位論文 前6條
1 潘仕文;管電壓對CT圖像質(zhì)量、輻射物理劑量及其生物學(xué)效應(yīng)的影響[D];蘇州大學(xué);2015年
2 Shakya Rukesh Man;100kV管電壓在256層螺旋CT冠狀動脈造影中的應(yīng)用[D];吉林大學(xué);2013年
3 徐男男;80KV管電壓在主動脈CT造影中的應(yīng)用[D];吉林大學(xué);2012年
4 劉登平;顱腦MSCTA:不同管電壓下圖像質(zhì)量及輻射劑量的對照性研究[D];川北醫(yī)學(xué)院;2014年
5 張越;低輻射劑量下物質(zhì)間CT值相互影響及CTA圖像質(zhì)量的研究[D];天津醫(yī)科大學(xué);2013年
6 彭聰;泌尿系統(tǒng)MSCT一站式檢查研究[D];重慶醫(yī)科大學(xué);2013年
,本文編號:2408901
本文鏈接:http://sikaile.net/yixuelunwen/huxijib/2408901.html