Influence of the abduction angle of the double upper limbs on liver non-enhanced CT image quality in patients with vehicle accident_Chinese Journal of Evidence-Based Medicine

Authors：

PU Jin , WANG qiang , XIA Chunchao ,  LI Zhenlin

Department of Radiology, West China Hospital, Sichuan University, Chengdu, 610041, P.R.China;

Corresponding author：

LI Zhenlin, Email: zlcd01@126.com

Keywords：

Upper limb; Liver; Abduction angle; CT

DOI：

10.7507/1672-2531.201711059

Video：

Export PDF Favorites Scan Get Citation

Abstract Full text Figures/Tables Video References Cited by

ObjectivesTo investigate the influence of the abduction angle of the upper extremities on the image quality of non-enhanced CT scan and clinical value of the patients who cannot lift with double upper limbs by vehicle accident.Methods60 patients with double upper limbs that could not lift by vehicle accidents were required to receive liver non-enhanced CT scan, the patients were divided into 3 groups according to the abduction angle (group A, B, C), 20 cases in each group, another 20 cases with standard pose as the control group (group D). The CT value and standard deviation of the liver region of interest, the erector and the background air were measured, and the contrast to noise ratio of liver images, image noise value were calculated, together with the assessment of image quality and statistic analysis.ResultsThe liver non-enhanced CT scan were completed successfully. The image quality of group D was significantly better than A, B, C (Z=–10.753, P<0.05;Z=–11.645, P<0.05;Z=–12.281, P<0.05), respectively. Group C was better than A and B (Z=–8.502, P<0.05;Z=–4.068, P<0.05), respectively. Group B was better than A (Z=–5.885, P<0.05). The CNR of the four groups of images increased gradually, group A (0.09±0.77), group B (1.56±0.83), group C (2.51±0.87), group D (2.59±0.97), respectively. There were significant differences between four groups (F=36.323, P<0.05). The image noise decreased systematically, group A (14.84±2.94), group B (13.04±1.59), group C (11.60±1.72), group D (10.44±1.13), respectively. There were significant differences between four groups (H=426.755, P<0.05).ConclusionOn the premise of safety inspection, with the enlargement of angle of the upper limbs of patients who cannot lift with double upper limbs by vehicle accidents, the image noise decreased and image quality is improved with the increase of signal noise ratio.

Citation： PU Jin, WANG qiang, XIA Chunchao, LI Zhenlin. Influence of the abduction angle of the double upper limbs on liver non-enhanced CT image quality in patients with vehicle accident. Chinese Journal of Evidence-Based Medicine, 2018, 18(5): 454-458. doi: 10.7507/1672-2531.201711059 Copy

1.	宋彬, 黄子星. CT 检查在腹部创伤诊疗中的应用价值. 中国普外基础与临床杂志, 2015, 22(3): 263-268.
2.	Abujudeh HH, Kaewlai R, McMahon PM, et al. Abdomino-pelvic CT increases diagnostic certainty and guides management decisions: a prospective investigation of 584 patients in a large academic medical center. AJR Am J Roentgenol, 2011, 196(2): 238-243.
3.	Barajas RF Jr, Yeh BM, Webb EM, et al. Spectrum of CT findings in patients with atrial fibrillation and nontraumatic acute abdomen. AJR Am J Roentgenol, 2009, 193(2): 485-492.
4.	Salem TA, Molloy RG, O'Dwyer PJ. Prospective study on the role of the CT scan in patients with an acute abdomen. Colorectal Dis, 2005, 7(5): 460-466.
5.	袁知东, 刘远健, 江国银, 等. 双上肢均不能上举患者胸腹部 CT 扫描技术改进. 中华放射学杂志, 2010, 44(2): 198-201.
6.	朱卫平, 王振, 钟建国, 等. 手臂上举姿势对胸部多层 CT 扫描自动管电流曝光技术的影响. 中华放射学杂志, 2012, 46(10): 948-949.
7.	Brink M, de Lange F, Oostveen LJ, et al. Arm raising at exposure-controlled multidetector trauma CT of thoracoabdominal region: higher image quality, lower radiation dose. Radiology, 2008, 249(2): 661-670.
8.	张伟, 庞小娇, 龚建平, 等. 足头侧扫描方向对提高胸部血管成像图像质量的价值. 临床放射学杂志, 2014, 33(4): 609-611.
9.	陆东旭, 王瑞, 范占明, 等. 双低剂量全主动脉 CT 血管成像临床应用研究. 中国 CT 和 MRI 杂志, 2015, 13(4): 117-120.
10.	Nakayama Y, Awai K, Funama Y, et al. Abdominal CT with low tube voltage: preliminary observations about radiation dose, contrast enhancement, image quality, and noise. Radiology, 2005, 237(3): 945-951.
11.	武永杰, 赵宏亮, 魏梦绮, 等. 低浓度对比剂大螺距前门控双源 CT 冠状动脉成像初步研究. 放射学实践, 2015, 30(5): 554-559.
12.	姜健, 王可, 许玉峰, 等. 低辐射剂量肝脏 CT 增强扫描: 80 kVp 结合迭代重建技术的初步研究. 放射学实践, 2016, 31(4): 316-320.
13.	张丽, 于红, 刘士远, 等. 迭代重建技术对肺部平扫 CT 图像质量的影响. 中华放射学杂志, 2013, 47(4): 316-320.
14.	曹国全, 蔡志敏, 陈勇春, 等. 低管电压联合迭代重建算法对胸部 CT 血管造影图像质量及辐射剂量的影响. 中华放射医学与防护杂志, 2015, 35(5): 393-396.
15.	雍敏, 毕纯龙, 万霞, 等. 双源 CT 低管电压大螺距(Flash)模式联合迭代重组在主动脉 CTA 中的应用研究. 临床放射学杂志, 2015, 34(9): 1505-1509.
16.	Pontana F, Pagniez J, Duhamel A, et al. Reduced-dose low-voltage chest CT angiography with Sinogram-affirmed iterative reconstruction versus standard-dose filtered back projection. Radiology, 2013, 267(2): 609-618.
17.	武永杰, 郑敏文, 赵宏亮, 等. 低浓度对比剂联合应用低 kV 和迭代重建技术的冠状动脉双源 CT 成像可行性. 中华医学杂志, 2014, 94(29): 2260-2263.
18.	胡敏霞, 赵心明, 宋俊峰, 等. 64 层螺旋 CT 腹部扫描参数优化的初步研究. 中华放射学杂志, 2011, 45(3): 264-269.
19.	王倩, 赵心明, 宋俊峰, 等. 自动管电流调制技术对腹部 CT 图像质量及辐射剂量影响的体模研究. 中华放射学杂志, 2013, 47(7): 648-653.
20.	Irie T, Inoue H. Individual modulation of the tube current-seconds to achieve similar levels of image noise in contrast-enhanced abdominal CT. AJR Am J Roentgenol, 2005, 184(5): 1514-1518.

1. 宋彬, 黄子星. CT 检查在腹部创伤诊疗中的应用价值. 中国普外基础与临床杂志, 2015, 22(3): 263-268.
2. Abujudeh HH, Kaewlai R, McMahon PM, et al. Abdomino-pelvic CT increases diagnostic certainty and guides management decisions: a prospective investigation of 584 patients in a large academic medical center. AJR Am J Roentgenol, 2011, 196(2): 238-243.
3. Barajas RF Jr, Yeh BM, Webb EM, et al. Spectrum of CT findings in patients with atrial fibrillation and nontraumatic acute abdomen. AJR Am J Roentgenol, 2009, 193(2): 485-492.
4. Salem TA, Molloy RG, O'Dwyer PJ. Prospective study on the role of the CT scan in patients with an acute abdomen. Colorectal Dis, 2005, 7(5): 460-466.
5. 袁知东, 刘远健, 江国银, 等. 双上肢均不能上举患者胸腹部 CT 扫描技术改进. 中华放射学杂志, 2010, 44(2): 198-201.
6. 朱卫平, 王振, 钟建国, 等. 手臂上举姿势对胸部多层 CT 扫描自动管电流曝光技术的影响. 中华放射学杂志, 2012, 46(10): 948-949.
7. Brink M, de Lange F, Oostveen LJ, et al. Arm raising at exposure-controlled multidetector trauma CT of thoracoabdominal region: higher image quality, lower radiation dose. Radiology, 2008, 249(2): 661-670.
8. 张伟, 庞小娇, 龚建平, 等. 足头侧扫描方向对提高胸部血管成像图像质量的价值. 临床放射学杂志, 2014, 33(4): 609-611.
9. 陆东旭, 王瑞, 范占明, 等. 双低剂量全主动脉 CT 血管成像临床应用研究. 中国 CT 和 MRI 杂志, 2015, 13(4): 117-120.
10. Nakayama Y, Awai K, Funama Y, et al. Abdominal CT with low tube voltage: preliminary observations about radiation dose, contrast enhancement, image quality, and noise. Radiology, 2005, 237(3): 945-951.
11. 武永杰, 赵宏亮, 魏梦绮, 等. 低浓度对比剂大螺距前门控双源 CT 冠状动脉成像初步研究. 放射学实践, 2015, 30(5): 554-559.
12. 姜健, 王可, 许玉峰, 等. 低辐射剂量肝脏 CT 增强扫描: 80 kVp 结合迭代重建技术的初步研究. 放射学实践, 2016, 31(4): 316-320.
13. 张丽, 于红, 刘士远, 等. 迭代重建技术对肺部平扫 CT 图像质量的影响. 中华放射学杂志, 2013, 47(4): 316-320.
14. 曹国全, 蔡志敏, 陈勇春, 等. 低管电压联合迭代重建算法对胸部 CT 血管造影图像质量及辐射剂量的影响. 中华放射医学与防护杂志, 2015, 35(5): 393-396.
15. 雍敏, 毕纯龙, 万霞, 等. 双源 CT 低管电压大螺距(Flash)模式联合迭代重组在主动脉 CTA 中的应用研究. 临床放射学杂志, 2015, 34(9): 1505-1509.
16. Pontana F, Pagniez J, Duhamel A, et al. Reduced-dose low-voltage chest CT angiography with Sinogram-affirmed iterative reconstruction versus standard-dose filtered back projection. Radiology, 2013, 267(2): 609-618.
17. 武永杰, 郑敏文, 赵宏亮, 等. 低浓度对比剂联合应用低 kV 和迭代重建技术的冠状动脉双源 CT 成像可行性. 中华医学杂志, 2014, 94(29): 2260-2263.
18. 胡敏霞, 赵心明, 宋俊峰, 等. 64 层螺旋 CT 腹部扫描参数优化的初步研究. 中华放射学杂志, 2011, 45(3): 264-269.
19. 王倩, 赵心明, 宋俊峰, 等. 自动管电流调制技术对腹部 CT 图像质量及辐射剂量影响的体模研究. 中华放射学杂志, 2013, 47(7): 648-653.
20. Irie T, Inoue H. Individual modulation of the tube current-seconds to achieve similar levels of image noise in contrast-enhanced abdominal CT. AJR Am J Roentgenol, 2005, 184(5): 1514-1518.

Chinese Journal of Evidence-Based Medicine

Influence of the abduction angle of the double upper limbs on liver non-enhanced CT image quality in patients with vehicle accident

Abstract Full text Figures/Tables Video References Cited by

Previous Article

Next Article

Format

Content