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《中国物理C》(英文)编辑部
2024年10月30日

Scatter correction for cone-beam computedtomography using self-adaptive scatterkernel superposition

  • The authors propose a combined scatter reduction and correction method to improve image quality in cone beam computed tomography (CBCT). The scatter kernel superposition (SKS) method has been used occasionally in previous studies. However, this method differs in that a scatter detecting blocker (SDB) was used between the X-ray source and the tested object to model the self-adaptive scatter kernel. This study first evaluates the scatter kernel parameters using the SDB, and then isolates the scatter distribution based on the SKS. The quality of image can be improved by removing the scatter distribution. The results show that the method can effectively reduce the scatter artifacts, and increase the image quality. Our approach increases the image contrast and reduces the magnitude of cupping. The accuracy of the SKS technique can be significantly improved in our method by using a self-adaptive scatter kernel. This method is computationally efficient, easy to implement, and provides scatter correction using a single scan acquisition.
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  • [1] Boone J M, Seibert J A. Medical Physics, 1988, 15: 721[2] Floyd Jr C E et al. Investigative Radiology, 1993, 28(5): 427[3] Siewerdsen J et al. Medical Physics, 2006, 33: 187[4] YAO W, Leszczynski K W. Medical Physics, 2009, 36: 3145[5] YAO W, Leszczynski K W. Medical Physics, 2009, 36: 3157[6] Maltz J S et al. Medical Imaging, IEEE Transactions on, 2008, 27(12): 1791-1810[7] LI H, Mohan R, ZHU X R. Physics in Medicine and Biology, 2008, 53: 6729[8] Mainegra-Hing E, Kawrakow I. Fast Monte Carlo Calculation of Scatter Corrections for CBCI Images [c]. Phys.: Conf. Ser. 102. IOP Publishing, 2008[9] Poludniowski G et al. Physics in Medicine and Biology, 2009, 54: 3847[10] Rinkel J et al. Physics in Medicine and Biology, 2007, 52: 4633[11] Spies L et al. Medical Physics, 2000, 27: 462[12] SUN M, Star-Lack J. Physics in Medicine and Biology, 2010, 55: 6695[13] NING R, TANG X, Conover D. Medical Physics, 2004, 31: 1195[14] ZHU L, Strobel N, Fahrig R. X-ray Scatter Correction for Cone-Beam CT Using Moving Blocker Array. 2005[15] Bani-Hashemi A et al. Med. Phys., 2005. 32(efeq5): 2093[16] Persliden J, Carlsson G A. Physics in Medicine and Biology, 1997, 42: 155[17] Floyd Jr C E, Chotas H G, Ravin C E. Investigative Radiology, 1994, 29(efeq8): 852[18] Graham S et al. Medical Physics, 2007, 34: 2691[19] ZHU L, WANG J, XING L. Medical Physics, 2009, 36: 741[20] ZHU L et al. Medical Physics, 2009, 36: 2258[21] CAI W, NING R, Conover D. Optical Engineering, 2008, 47: 097003[22] YAN H et al. Physics in Medicine and Biology, 2010, 55: 6353[23] ZHU L, Bennett N R, Fahrig R. Theory and Preliminary Results. Medical Imaging, IEEE Transactions on, 2006. 25(12): 1573-1587[24] Giersch J, Weidemann A, Anton G. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2003, 509(1-3): 151-156
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Get Citation
XIE Shi-Peng and LUO Li-Min. Scatter correction for cone-beam computedtomography using self-adaptive scatterkernel superposition[J]. Chinese Physics C, 2012, 36(6): 566-572. doi: 10.1088/1674-1137/36/6/015
XIE Shi-Peng and LUO Li-Min. Scatter correction for cone-beam computedtomography using self-adaptive scatterkernel superposition[J]. Chinese Physics C, 2012, 36(6): 566-572.  doi: 10.1088/1674-1137/36/6/015 shu
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Received: 2011-08-24
Revised: 1900-01-01
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Scatter correction for cone-beam computedtomography using self-adaptive scatterkernel superposition

Abstract: The authors propose a combined scatter reduction and correction method to improve image quality in cone beam computed tomography (CBCT). The scatter kernel superposition (SKS) method has been used occasionally in previous studies. However, this method differs in that a scatter detecting blocker (SDB) was used between the X-ray source and the tested object to model the self-adaptive scatter kernel. This study first evaluates the scatter kernel parameters using the SDB, and then isolates the scatter distribution based on the SKS. The quality of image can be improved by removing the scatter distribution. The results show that the method can effectively reduce the scatter artifacts, and increase the image quality. Our approach increases the image contrast and reduces the magnitude of cupping. The accuracy of the SKS technique can be significantly improved in our method by using a self-adaptive scatter kernel. This method is computationally efficient, easy to implement, and provides scatter correction using a single scan acquisition.

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