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《Chinese Computed Medical Imaging》 2011-06
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Evaluation of Low kV Technique in Craniocervical Computed Tomographic Angiography

LI Yu- hua,BAI Mei,LI Hui- min,FENG Yun,LU Jian- ping 1 Department of Radiology,Changhai Hospital,The Second Military Medical University 2 Department of Radiology,Xinhua Hospital,Shanghai Jiaotong University  
Purpose:Low - kV technique can reduce the radiation dose.We want to use the raw data of dual - energy(DE) craniocervical computed tomography angiography(CTA) from a DSCT scanner to evaluate the image quality and the feasibility of low - kV scan.Methods:Twenty consecutive patients (mean age 63 years,ranged from 44 to 75 years),who had undergone cervical and cranial CTA,were enrolled.All patients were scanned with DE protocol with a dual - source CT system(Siemens Somatom Definition).High kV(120),low kV(80),and DE axial images were retrospectively reconstructed,and CT values and noise values of carotid artery and sternocleidomastoid muscle were measured at the level of the bifurcation of common carotid artery.The contrast,signal - to - noise ratio(SNR) and contrast-to - noise ratio(CNR) were calculated.When the noise of low kV images was high,the low - pass filter was used to reconstruct.Serial images were transferred to the workstation for CTA with maximum intensity projection(MIP) and volume rendering(VR).The image quality of CTA was evaluated with three grades(excellent,good,and poor).Paired t test was used for the statistic analysis.Results:Images obtained by 80 kV had the best enhancement and contrast but more noise,the SNR,CNR,and quality of the CTA images were good.Use of low - pass filter could significantly reduced the image noise.Conclusion: Excellent cervical and cranial CT angiography can be obtained by low kV technique.
【CateGory Index】: R816.1
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Chinese Journal Full-text Database 2 Hits
1 Y Hong,LI Hui-min,YUAN Zheng Department of Radiology,Changzheng Hospital,The Second Military Medical University 415 Fengyang Rd,Shanghai 200003,China;Relating Factors on Image Quality of Three-dimensional Upper Abdominal CT Angiography[J];Chinese Computed Medical Imaging;2009-04
2 Chen Peizhen,LuShouzeng, (Nantong Medical College,Jiangsu)The powers of t-test for paired design (or paired t-test )and t-test for completely random design (or t-test)were compared by means of Monte Carlo simulations as well as some real data sets. The a;Study on the Power of Paired t-test[J];Chinese Journal of Health Statistics;1996-06
Chinese Journal Full-text Database 10 Hits
1 PU Nuo,PU Hong,JIANG Jin,TAO Ke-yan(Department of Radiology,The people′s Hospital of Sichuan,Chengdu 610072,China);Dual-source CT Coronary Angiography:Analysis of Imaging Quality Factorss[J];Journal of Chengdu Medical College;2009-01
2 BAO Jian,CHEN Hong-wei,FANG Xiang-ming,et al.(Medical Imaging Center,Wuxi People′s Hospital Affiliated to Nanjing Medical University,Wuxi,Jiangsu 214003,China);Early diagnostic value of dual-source CT in patients with non-ST-elevation acute coronary syndromes[J];Chongqing Medicine;2009-05
3 MING Jian-zhong,ZENG Zhi-bin,ZHONG Wen-xin,PENG Ke-wen,SHEN Bi-xian Department of Radiology,Nanshang Hospital Affiliated to Guangdong Medical College,Shenzhen 518052,China;The Application of Bone Subtraction 3D-CTA for the Evaluation of Cerebral Vascular Disease[J];Computerized Tomography Theory and Applications;2010-01
4 YANG Zhen-yu,LV Yang,ZHAO Jun Department of Biomedical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Analysis of Scattering in Triple-source Cone-beam CT Based on Monte Carlo Method[J];Computerized Tomography Theory and Applications;2012-01
5 ZHUANG Lei,LIU Jian-jun, LIU Tao, et al. Department of Medical Imaging,Urumuqi General Hospital of PLA,Urumuqi 830000,China;Study of image quality of dual source CT coronary angiography and influencing factors[J];Chinese Journal of CT and MRI;2009-02
6 CHEN Yong,ZHANG Wei,SHANG Ying-jie,et al.Department of Radiology,Zhengzhou People's Hospital,Zhengzhou Henan 450003,China;The Evaluation and Research About Dualsource CT Coronary Angiography in VDH(vavular disease of heart) Patients[J];Chinese Journal of CT and MRI;2012-02
7 QU Xin-kai1,FANG Wei-yi1,GUAN Shao-feng1,SHEN Yan2,YE Jian-ding2,JIAO Jing2,LI Ruo-gu1,AILI Mai-he-mu-ti3 1.Department of Cardiology,Shanghai Chest Hospital,Shanghai Jiaotong University,Shanghai 200030,China2.Department of Radiology,Shanghai Chest Hospital,Shanghai Jiaotong University,Shanghai 2000303.Department of Cardiology,First People's Hospital of Akesu,Akesu 843000;Dual-phase scanning characteristics of multislice spiral CT for acute myocardial infarction[J];Academic Journal of Second Military Medical University;2008-07
8 WANG Yi-ning,FU Hai-hong,KONG Ling-yan,et al.Department of Radiology,Beijing Xiehe Medical College Hospital,Chinese Academy of Medical Sciences,Beijing 100730,P.R.China;Dual-source CT Coronary Angiography in Patients with Atrial Fibrillation:Initial Experience[J];Radiologic Practice;2008-08
9 SUN Zhi-yuan,LU Guang-ming,HUANG Wei,et al.Department of Medical Imaging,Nanjing General Hospital of Nanjing Military Command,Nanjing 210002,P.R.China;Image Quality of Dual-Source CT Coronary Angiography at Different Heart Rate Level[J];Radiologic Practice;2008-10
10 WANG Hua-bin,LI Su-jian,LU Guang-ming,et al.Department of Medical Imaging,Nanjing General Hospital of PLA,Clinical College of Medical School of Nanjing University,Nanjing 210002,P.R.China;Preliminary evaluation of dual-energy CT technique in the study of solitary pulmonary nodules[J];Radiologic Practice;2010-05
【Secondary Citations】
Chinese Journal Full-text Database 1 Hits
1 GAO Jianhua,WANG Guisheng,LI Jianying,et al.Department of CT,The General Hospital of Chinese People's Armed Police Forces,Beijing 100039,P.R.China;Application of Dose Reduction Techniques in CT of Coronary Artery with 64-row Multi-Slice Helical CT[J];Journal of Clinical Radiology;2008-03
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