The Application of 70 kV and Sonogram-affirmed Iterative Reconstruction Technique in CT Examination for Children with Congenital Heart Disease_West China Medical Journal

Authors：

 ZhaoJin , LiWanjiang ,  LiZhenlin

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

Corresponding?author：

LiZhenlin, Email: lzlcd01@126.com

Keywords：

Children with congenital heart disease; Iterative reconstruction; Radiation dose

DOI：

10.7507/1002-0179.201600380

Video：

Export PDF Favorites Scan Get Citation

Abstract Full text Figures/Tables Video References Cited by

Objective To evaluate the value of 70 kV and sonogram-affirmed iterative reconstruction technique in CT examination for children with congenital heart disease. Methods Thirty children with congenital heart disease who underwent CT scan between January and September 2014 were included in this study. According to the different tube voltage, they were randomly divided into group A (80 kV) and group B (70 kV), with fifteen in each. All the children were scanned on a dual-source-CT (Siemens Definition Flash). Group A used filtered back projection reconstruction. Group B used sonogram-affirmed iterative reconstruction. We measured and calculated the pulmonary artery signal-to-noise ratio at the level of main pulmonary artery window, the signal-to-noise ratio of the ascending aorta, noise ratio contrast between the pulmonary artery and erector spinae and between the ascending aorta and erector spinae. The image quality for congenital heart disease was assessed by two senior radiologists. The measurement of radiation dose included effective dose (ED), volume CT dose index (CTDI_vol) and dose length product (DLP). Results There were no significant differences between group A and B in terms of pulmonary artery signal-to-noise ratio (14.54±3.77, 11.23±2.52), the signal-to-noise ratio of the ascending aorta (14.76±3.41, 12.31±3.47), the noise ratio contrast between pulmonary artery and erector spinae (12.04±3.96, 9.18±3.76) and between the ascending aorta and erector spinae (12.47±4.59, 9.77±4.41) (P > 0.05). There was significant difference between group A and group B in CTDI_vol[(0.53±0.09), (0.38±0.03) mGy], DLP[(12.93±1.79), (6.67±0.72) mGy·cm], and ED[(0.34±0.05), (0.17±0.02) mSv] (P < 0.05). Conclusion The application of 70 kV and sonogram-affirmed iterative reconstruction technique in CT examination for children with congenital heart disease can significantly reduce the radiation dose without any influence on image quality.

Citation： ZhaoJin, LiWanjiang, LiZhenlin. The Application of 70 kV and Sonogram-affirmed Iterative Reconstruction Technique in CT Examination for Children with Congenital Heart Disease. West China Medical Journal, 2016, 31(8): 1398-1401. doi: 10.7507/1002-0179.201600380 Copy

1.	Ghafourian K, Younes D, Simprini LA, et al. Scout view X-ray attenuation versus weight-based selection of reduced peak tube voltage in cardiac CT angiography[J]. JACC Cardiovasc Imaging, 2012, 5(6):589-595.
2.	林旭波, 鄭文龍, 吳愛琴, 等.下肢低kVp CT血管造影研究[J].實用放射學雜志, 2013, 29(10):1655-1657, 1661.
3.	鄧利萍, 李真林, 袁元, 等.雙源CT低劑量掃描在胸部普通檢查中的應用價值[J].華西醫學, 2013, 28(5):696-700.
4.	莊勛慧, 馮衛華, 徐文堅, 等.迭代重建技術在CT檢查青年骶髂關節中的應用[J].中國醫學影像技術, 2012, 28(4):796-799.
5.	Huang MP, Liang CH, Zhao ZJ, et al. Evaluation of image quality and radiation dose at prospective ECG-triggered axial 256-slice multi-detector CT in infants with congenital heart disease[J]. Pediatr Radiol, 2011, 41(7):858-866.
6.	Thomas KE, Wang B. Age-specific effective doses for pediatric MSCT examinations at a large children's hospital using DLP conversion coefficients:a simple estimation method[J]. Pediatr Radiol, 2008, 38(6):645-656.
7.	羅藝, 余建群, 李學明, 等.雙源CT在單心室中的診斷價值[J].生物醫學工程學雜志, 2013, 30(3):508-512.
8.	Paul JF, Rohnean A, Sigal-Cinqualbre A. Multidetector CT for congenital heart patients:what a paediatric radiologist should know[J]. Pediatr Radiol, 2010, 40(6):869-875.
9.	Stolzmann P, Goetti R, Baumueller S, et al. Prospective and retrospective ECG-gating for CT coronary angiography perform similarly accurate at low heart rates[J]. Eur J Radiol, 2011, 79(1):85-91.
10.	張月俏, 任宏, 沈國惠.雙源CT Flash Spiral技術在胸部掃描中的應用和防護價值[J].中華放射醫學與防護雜志, 2011, 31(3):370-371.
11.	卞佳, 張培功, 姜興岳, 等.雙源CT新技術在兒童胸部檢查中的應用[J].實用放射學雜志, 2013, 29(4):628-630, 645.
12.	唐紅, 白文娟, 安琪, 等.超聲心動圖對主動脈縮窄的診斷價值[J].中華醫學超聲雜志:電子版, 2006, 3(6):375-376.
13.	彭禮清, 楊志剛, 余建群, 等.心電門控雙源CT血管造影在評價主動脈縮窄中的臨床價值[J].生物醫學工程學雜志, 2013, 30(1):89-94.
14.	Brenner DJ, Hall EJ. Computed tomography——an increasing source of radiation exposure[J]. N Engl J Med, 2007, 357(22):2277-2284.
15.	卞佳, 張培功, 姜興岳, 等.原始數據域迭代重建技術在顱腦CT檢查中的初步應用[J].實用放射學雜志, 2013, 29(11):1840-1843.

1. Ghafourian K, Younes D, Simprini LA, et al. Scout view X-ray attenuation versus weight-based selection of reduced peak tube voltage in cardiac CT angiography[J]. JACC Cardiovasc Imaging, 2012, 5(6):589-595.
2. 林旭波, 鄭文龍, 吳愛琴, 等.下肢低kVp CT血管造影研究[J].實用放射學雜志, 2013, 29(10):1655-1657, 1661.
3. 鄧利萍, 李真林, 袁元, 等.雙源CT低劑量掃描在胸部普通檢查中的應用價值[J].華西醫學, 2013, 28(5):696-700.
4. 莊勛慧, 馮衛華, 徐文堅, 等.迭代重建技術在CT檢查青年骶髂關節中的應用[J].中國醫學影像技術, 2012, 28(4):796-799.
5. Huang MP, Liang CH, Zhao ZJ, et al. Evaluation of image quality and radiation dose at prospective ECG-triggered axial 256-slice multi-detector CT in infants with congenital heart disease[J]. Pediatr Radiol, 2011, 41(7):858-866.
6. Thomas KE, Wang B. Age-specific effective doses for pediatric MSCT examinations at a large children's hospital using DLP conversion coefficients:a simple estimation method[J]. Pediatr Radiol, 2008, 38(6):645-656.
7. 羅藝, 余建群, 李學明, 等.雙源CT在單心室中的診斷價值[J].生物醫學工程學雜志, 2013, 30(3):508-512.
8. Paul JF, Rohnean A, Sigal-Cinqualbre A. Multidetector CT for congenital heart patients:what a paediatric radiologist should know[J]. Pediatr Radiol, 2010, 40(6):869-875.
9. Stolzmann P, Goetti R, Baumueller S, et al. Prospective and retrospective ECG-gating for CT coronary angiography perform similarly accurate at low heart rates[J]. Eur J Radiol, 2011, 79(1):85-91.
10. 張月俏, 任宏, 沈國惠.雙源CT Flash Spiral技術在胸部掃描中的應用和防護價值[J].中華放射醫學與防護雜志, 2011, 31(3):370-371.
11. 卞佳, 張培功, 姜興岳, 等.雙源CT新技術在兒童胸部檢查中的應用[J].實用放射學雜志, 2013, 29(4):628-630, 645.
12. 唐紅, 白文娟, 安琪, 等.超聲心動圖對主動脈縮窄的診斷價值[J].中華醫學超聲雜志:電子版, 2006, 3(6):375-376.
13. 彭禮清, 楊志剛, 余建群, 等.心電門控雙源CT血管造影在評價主動脈縮窄中的臨床價值[J].生物醫學工程學雜志, 2013, 30(1):89-94.
14. Brenner DJ, Hall EJ. Computed tomography——an increasing source of radiation exposure[J]. N Engl J Med, 2007, 357(22):2277-2284.
15. 卞佳, 張培功, 姜興岳, 等.原始數據域迭代重建技術在顱腦CT檢查中的初步應用[J].實用放射學雜志, 2013, 29(11):1840-1843.

West China Medical Journal

The Application of 70 kV and Sonogram-affirmed Iterative Reconstruction Technique in CT Examination for Children with Congenital Heart Disease

Abstract Full text Figures/Tables Video References Cited by

Previous Article

Next Article

Format

Content