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100kVp条件下碘克沙醇(270mgI/mL)应用于肾动脉CTA检查的可行性研究 预览 被引量:4

Feasibility of using 100kVp technique in renal artery CT angiography with iodixanol (270rag I/mL)
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摘要 目的:探讨100kVp条件下、使用碘克沙醇(270mgI/mL)行肾动脉CTA检查的可行性。方法:18例行肾动脉CTA检查的连续病例根据CT扫描管电压分为两组:100kVp组(10例)和120kVp组(6例),记录2组的容积CT剂量指数(CTDIv01),计算体型特异性剂量估计(SSDE)值。由2位有经验的影像诊断医师对图像进行主观评分,包括:整体图像质量、图像细节(血管锐利程度、MPR显示分支、VR显示分支、MIP显示分支)。图像客观评价包括:目标血管和背景的CT值(腹主动脉动脉、双侧肾动脉、竖脊肌),对比噪声比(CNR)及信噪比(SNR)。两组间辐射剂量及客观评价指标的比较采用两独立样本t检验,主观评价指标的比较采用Mann-WhitneyU检验。结果:100kVp组CTDIv01为(11.19±3.85)mGy,120kVp组为(17.37±2.63)mGy,两组间差异有统计学意义(P〈0.05)。100kVp组SSDE为(15.48±4.41)mGy,120kVP组为(25.00±2.49)mGy,两组间差异有统计学意义(P〈0.05)。主观评价:两组图像质量整体评分的差异无统计学意义(Z=-1.60,P〉0.05);两组图像血管锐利程度评分的差异有统计学意义(Z=-2.162,P〈0.05);两组中重组图像在显示血管分支方面,MPR(Z=-0.972,P〉0.05)、VR(Z=-1.696,P〉0.05)和MIP图像(Z=-1.626,P〉0.05)间的差异均无统计学意义。客观评价:100kVp组腹主动脉CT值为(291±32)HU,120kVp组为(224±20)HU,两者差异有统计学意义(P〈0.05);100kVP组肾动脉CT值为(278±37)HU,120kVp组为(222±15)HU,两者差异有统计学意义(P〈0.05);空气CT值及标准差在100kVp组分别为(-992±2)和(9±2)HU,120kVp组分别为(-995±2)和(7±2)HU,两组间2个指标的差异均无统计学意义(P〉0.05);两组图像的CNR分别为22±4及21±3,差异无统计学意义(P〉0.05);两组图像 Objective:To evaluate the feasibility of using 100kVp technique with iodixanol (270mg I/mL) in renal computed tomography angiography (CTA). Methods: Sixteen Consecutive patients underwent renal artery CTA. They were divided into 100kVp group (10 patients) and 120kVp group (6 patients). The radiation dose and size-specific dose estimation (SSDE) of these two groups were recorded. The image quality was evaluated subjectively with 5 scale method by two experienced radiologists,including image quality as a whole, detail image quality (sharpness of blood vessels, blood vessel branches displayed on MPR, VR and MIP). The objective evaluation included attenuation of aimed blood vessels (abdominal aorta, bilateral renal arteries) and the attenuation of psoas major muscle at the same level as reference,and contrast-to-noise ratio (CNR), signal-to-noise ratio (SNR) were calculated. The radiation dose and objective evaluation parameters were statically analyzed with t test,and the subjective evaluation parameters were analyzed with Mann-Whitney U test. Results: The CTDIvol in 100kVp group was (11. 19±3.85)mGy, in 120kVp group was (17.37±2.63)mGy,with significant statistic difference (P〈0.05). The SSDE of 100kVp group was (15.48±4.41)mGy,in 120kVp group was (25.00±2.49)mGy, with significant statistic difference (P〈0.05). There was no significant difference in the image quality as a whole in subjective evaluation between the 2 groups (Z=- 1.60, P〉0.05). Significant difference was existed in the sharpness of blood vessels between the 2 groups (Z=-2. 162,P〈0.05) ;whereas no statistic difference was showed in the vessel branches displayed on MPR, VR and MIP (Z=- 0. 972, P〉0.05 ; Z= - 1. 696, P〉 0.05 ; Z=- 1. 626, P〉0.05), respectively. For objective evaluation,the CT values of abdominal aorta and renal artery in 100kVp group and 120kVp group was [(291±32) vs (224±20) HU,P%0.05)] and [(278±37) vs (222 ± 15) HU, P%0
作者 雷平贵 赵永为 王霄英 王鹤 张保翠 杨学东 高福生 LEI Ping-gui, ZHAO Yong-wei, WANG Xiao-ying, et al. Department of Radiology, Peking University First Hospital, Beijing 100034, P. R. China
出处 《放射学实践》 2014年第4期361-364,共4页 Radiologic Practice
关键词 肾动脉 CT血管成像 对比剂 迭代重建 辐射量 体型特异性剂量估计 Renal artery Computed tomography angiography Contrast medium Iterative reconstruetion Radia-tion dose Size-specific dose estimate
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参考文献12

  • 1张晓东,郭小超,王霄英.体型特异性剂量估计的概念和方法[J].放射学实践,2013,28(3):312-314. 被引量:30
  • 2Bilici A,Karcaaltincaba MtIlica AT,et al.Treatment of hyperten-sion from renal artery entrapment by percutaneous CT-guidedbotulinum toxin injection into diaphragmatic crus as alternative tosurgery and stenting[J],AJR,2007,189(3):143-145. 被引量:1
  • 3Sebastia C,Peri L?Salvador R,et al.Multidetector CT of living re-nal donors:lessons learned from surgeons [J].Radiographics,2010,30(7):1875-1890. 被引量:1
  • 4Manousaki E,Perisinakis K,Karantanas A,et al.MDCT angiogra-phy assessment of renal artery in-stent restenosis:can we reducethe radiation exposure burden? A feasibility study [J].Eur JRadiol,2011,79(2):224-231. 被引量:1
  • 5Zhang YD,Wang J,Zhang J,et al.Effect of iodinated contrastmedia on renal function evaluated with dynamic three-dimensionalMR renography [J].Radiology,2014,Doi:10.1148/radiol.13122495/-/DCl. 被引量:1
  • 6van Helvoort-Postulart D,Dirksen CD,Nelemans PJ,et al.Renalartery stenosis:cost-effectiveness of diagnosis and treatment[J].Radiology,2007,244(2):505-513. 被引量:1
  • 7Brenner DJ,Hall EJ.Computed tomography-an increasingsource of radiation exposure [J].N Engl J Med Overseas Ed,2007,357(22):2277-2284. 被引量:1
  • 8McCollough CH,Bruesewitz MR,Kofler JM Jr.CT dose reductionand dose management tools:overview of available options[J].Ra-diographics,2006,26(2):503-512. 被引量:1
  • 9Singh S? Kalra MK,Hsieh J,et al.Abdominal CT:comparison ofadaptive statistical iterative and filtered back projection recon-struction techniques[J].Radiology,2010,257(2):373-383. 被引量:1
  • 10Marin D,Nelson RC,Schindera ST,et al.Low-tube-voltage,high-tube-current multidetector abdominal CT:improved imagequality and decreased radiation dose with adaptive statistical itera-tive reconstruction algorithm-initial clinical experience[J].Ra-.diology,2010,254(1):145-153. 被引量:1

二级参考文献25

  • 1张龙江,祁吉.对比剂肾病:一个值得关注的问题[J].中华放射学杂志,2007,41(8):882-884. 被引量:63
  • 2McCollough CH. CT dose: how to measure, how to reduce[J]. Health Phys,2008,95(5) :508-525. 被引量:1
  • 3McNitt Gray MF. AAPM/RSNA physics tutorial for residents: topics in CT. Radiation dose in CT[J]. RadioGraphics, 2002,22 (6):1541- 1594. 被引量:1
  • 4Zhou H, Boone JM. Monte carlo evaluation of CTD(infinity) in in- finitely long cylinders of water, polyethylene and PMMA with diameters from 10ram to 500mm[J]. Med Phys, 2008,35(6): 2424-2455. 被引量:1
  • 5Turner AC, et al. The feasibility of a scanner-independent tech nique to estimate organ dose from MDCT scans:using CTDIvol to account for differences between scanners[J]. Med Phys, 2010,37 (4) :1816-1841. 被引量:1
  • 6Turner AC, et al. The feasibility of patient size-eorrected,seanne independent organ dose estimates for abdominal CT exams[J]. Med Phys,2011,38(2) :820- 829. 被引量:1
  • 7Boone JM,et al. Report of AAPM TG 204z size-specific dose esti- mates (SSDE) in pediatric and adult body CT examinations[M]. USA: AAPM, 2011 : 1-22. 被引量:1
  • 8Shope TB, Gagne RM, Johnson GC. A method for describing the doses delivered by transmission X-ray computed tomography[J]. Med Phys,1981,8(4) :488 -583. 被引量:1
  • 9Dixon RL. A new look at CT dose measurement: beyond CTDI [J]. Med Phys,2003,30(6) :1272-1352. 被引量:1
  • 10Boone JM. The trouble with CTD00 [J]. Med Phys, 2007,34 ( 4 ) : 1364-1435. 被引量:1

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