To Explore the Clinical Value of Dual-Energy Virtual Non-Contrast CT Scan for Subarachnoid Hemorrhage
Advances in Bioscience and Bioengineering
Volume 1, Issue 3, October 2013, Pages: 49-52
Received: Dec. 18, 2013; Published: Jan. 30, 2014
Views 2963      Downloads 150
Bo Xiao, Department of Biomedical Engineering, Luzhou Medical College, Luzhou, Sichuan, 646000, P.R. China
Article Tools
Follow on us
Objectives: To study the clinical value of Dual-Energy Virtual Non-Contrast CT scan for subarachnoid hemorrhage. Methods: 30 patients of subarachnoid hemorrhage were selected, they received Dual-Source Conventional Non-Contrast CT scans and head angiography with Dual-Energy CT. Then Liver Virtual Non-Contrast program was used to reconstruct the images. After that the Conventional Non-Contrast images were taken as gold standard to evaluate the clinical value of Virtual Non-Contrast technology in the following aspects: Signal-Noise Ratio, Radiation Dose and lesion diagnosis. Results: The Signal-Noise Ratio of Virtual Non-Contrast CT scan was (4.21 ± 0.5), the Signal-Noise Ratio of Conventional Non-Contrast CT scan was (10.39 ± 0.71), the latter was significantly higher than the former. The Dose Length Product of Virtual Non-contrast CT scan was (121.30±3.8), it was close to 1/6 of the Dose Length Product (697.6±4.2)of the Conventional Non-Contrast CT scan. As for the lesion area, the difference of the CT values between the Virtual Non-Contrast and the Conventional Non-Contrast CT scan was only 4~10Hu. In addition, the Virtual Non-Contrast images’ quality was graded by diagnostic teachers: there were 4 cases of 3 points, 23 cases of 2 points, 3 case of 1 point. Conclusions: Compared with the Conventional Non-Contrast images, there is greater noise in the Virtual Non-Contrast images, but the latter can meet the clinical diagnostic requirements and greatly reduce the radiation dose. Advances in knowledge: Virtual Non-Contrast technology was used for the diagnoses of subarachnoid hemorrhage, and the radiation dose was greatly reduced.
Dual-Source CT, Virtual Non-Contrast CT Scan, Signal-Noise Ratio, Radiation Dose
To cite this article
Bo Xiao, To Explore the Clinical Value of Dual-Energy Virtual Non-Contrast CT Scan for Subarachnoid Hemorrhage, Advances in Bioscience and Bioengineering. Vol. 1, No. 3, 2013, pp. 49-52. doi: 10.11648/
Jiang Jie, Han Dan. The clinical application and progress of virtual non-contrast technology of dual-energy CT. Chinese Journal of Radiology. 2012,46(10):958~960
Liang Yi, Dual-energy CT virtual non-contrasted images in patients suspected of having hepatic masses. Master’s Degree thesis, Southern Medical University, 2010. Page: 25-37.
Guo Xing, Ding Wei. Application of virtual non-enhanced images in evaluating subarachnoid hemorrhage by dual-energy Computed Tomography angiography. Acta Academiae Medicinae Sinicae. 2010,Vol.32 No.6:695~698
Huang Wei, Xu Yiming. Dual-source virtual non-contrast CT of the head: a preliminary study. Chinese Journal of Radiology. 2011,Vol.45, No.3:229~233
Zhan Libo, Qin Dongjing. The basic principle and characteristics of dual-source CT. Radiologic Practice. 2008;06: 55~59
Lu Heqin, Zhu Guoying. To study the influencing factors of medical X-ray CT radiation dose. Shanghai Medical Imaging, 2008;02: 79~82
Zhang longjia, Lu Guangming. The research progress of dual-energy imaging of dual-source CT. Journal of Clinical Radiology, 2009;11:22~26
Science Publishing Group
1 Rockefeller Plaza,
10th and 11th Floors,
New York, NY 10020
Tel: (001)347-983-5186