Control and Realization of Time Sequence for Low-dose Cone-Beam CT Imaging System
LUO Shouhua1, CUI Yannan1, BO Tengfei1, LI Guang1, CHEN Gong2
1. School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China;2. Information Department, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing 210029, China
Abstract:The basic working principle of Cone Beam Computer Tomography (CBCT) is briefly described, the advantages and disadvantages of both continuous and pulsed X-ray imaging methods are analyzed, and the pulsed X-ray imaging method is adopted to implement the design of low-dose CBCT. On the basis of this, the internal and external trigger modes of PaxScan 2520 flat panel detector are realized. The experiment results show that the method of continuous X-ray imaging needs dozens of seconds for the process rotating a circle, in the meanwhile, the method of pulsed X-ray imaging only needs about four seconds for doing same job. In a word, pulsed X-ray imaging reduces the X-ray radiation time considerably and improves the safety performance of CBCT significantly. Besides, pulsed X-ray imaging with internal and external trigger modes has no difference in terms of image quality. The choice for the modes depends on whether or not needs active control for X-ray emission.
罗守华;崔燕南;薄腾飞;李光;陈功. 低辐射CBCT系统成像时序的控制与实现[J]. , 2012, 30(5): 23-26.
LUO Shouhua;CUI Yannan;BO Tengfei;LI Guang;CHEN Gong. Control and Realization of Time Sequence for Low-dose Cone-Beam CT Imaging System. , 2012, 30(5): 23-26.