双低剂量腹部64层螺旋CT增强扫描与血管成像技术在肠系膜动脉成像中的应用研究
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摘要
目的探讨双低剂量腹部64层螺旋CT增强扫描与血管成像技术在肠系膜动脉成像中的可行性。方法对220例行CTU检查的患者列为双低剂量组,对220例行全腹部CT检查的患者列为常规剂量组。将两组的CT图像进行对比,分析两组的CTDIvol、DLP、ED及CTA图像质量的差异,评价双低剂量组肠系膜动脉的显示能力。结果双低剂量组平均CTDIvol较常规剂量组降低47. 7%;双低剂量组的肠系膜动脉三级以上分支显示清晰。结论双低剂量64层螺旋CT增强扫描与血管成像技术在肠系膜动脉成像中是可行的。
Objective To investigate the feasibility of double low dose abdominal 64 slice spiral CT enhanced scan and angiography in mesenteric artery imaging. Methods 220 patients who underwent CTU examination were classified as double low dose group,220 patients who underwent abdominal CT examination were classified as routine dose group. Compare the two groups of CT images,the difference of image quality of CTDIvol,DLP,ED and CTA between two groups was analyzed,and the ability of displaying the mesenteric artery in double low dose group was evaluated. Results The mean CTDIvol of the double low dose group was 47. 7% lower than that of the conventional dose group,and the branches of the mesenteric artery at three or more in double low dose group showed clear. Conclusion Double low dose enhanced 64 slice spiral CT scan and angiography in mesenteric artery imaging is feasible.
Objective To investigate the feasibility of double low dose abdominal 64 slice spiral CT enhanced scan and angiography in mesenteric artery imaging. Methods 220 patients who underwent CTU examination were classified as double low dose group,220 patients who underwent abdominal CT examination were classified as routine dose group. Compare the two groups of CT images,the difference of image quality of CTDIvol,DLP,ED and CTA between two groups was analyzed,and the ability of displaying the mesenteric artery in double low dose group was evaluated. Results The mean CTDIvol of the double low dose group was 47. 7% lower than that of the conventional dose group,and the branches of the mesenteric artery at three or more in double low dose group showed clear. Conclusion Double low dose enhanced 64 slice spiral CT scan and angiography in mesenteric artery imaging is feasible.
引文
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[11]Lee C H,Goo J M,Ye H J,et al. Radiation dose modulation techniques in the multi-detector CT era:from basics to practice[J]. Radiographics,2008,28(5):1454-1459.
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[2]Szucs-farkas Z,Schibler F,Cullmann J,et al. Diagnostic accuracy of pul-Monary CT angiography at low tube voltage:intraindividual comparison of a normal-dose protocol at 120kVp and a low-dose protocol at 80kVp using reduced amount of contrast medium in a simulation study[J]. AJR Am J Roentgenol,2011,197(5):852-859.
[3]唐令胜,刘朝晖,陈伟棠,等.腹部CTA病例应用低剂量扫描的可行性分析[J].现代医院,2016,16(3):386-387.
[4]宋娟,王伟成,李勇.双低扫描技术联合自适应统计迭代重建技术在能谱CT冠状动脉成像中的应用研究[J].实用放射学杂志,2015,31(3):467-472.
[5]Einstein A J,Moser K W,Thompson R C,et al. Radiation dose to patients from cardiac diagnostic imaging[J]. Circulation,2007,116(11):1290-1305.
[6]张博,龚建平. CT检查辐射致癌风险的研究进展[J].国际医学放射学杂志,2009,32(3):217-220.
[7]Meijboom W B,Meijs M F,Schuijf J D,et al. Diagnostic accuracy of 64-slice com-puted tomography coronary angiography:a prospective,multicenter,multi-Vendor study[J]. J Am Coll Cardiol,2008,52(25):2135-2144.
[8]Brenner D J,Hall E J. Computed tomography-an increasing source of radiation exposure[J]. N Engl J Med,2007,357(22):2277-2284.
[9]牛风艳,王东随. CT增强扫描中对比剂的毒副反应及合理应用[J].现代护理,2006,12(30):2860-2861.
[10]丁建林,易旦冰,陈耀强,等. 64层螺旋CT低剂量扫描技术在骶髂关节病变中的应用[J].中国医学影像学杂志,2011,19(8):561-564.
[11]Lee C H,Goo J M,Ye H J,et al. Radiation dose modulation techniques in the multi-detector CT era:from basics to practice[J]. Radiographics,2008,28(5):1454-1459.
[12]孟悛非,范淼.重视CT低剂量研究[J].中华放射学杂志,2009,43(7):679-680.