一种基于Monte Carlo模拟的锥形束CT图像散射校准方法

doi:10.11889/j.1000-3436.2019.rrj.37.040303

Journal of Radiation Research and Radiation Processing ›› 2019, Vol. 37 ›› Issue (4): 4-040303-8.doi: 10.11889/j.1000-3436.2019.rrj.37.040303

• RADIOBIOLOGY AND RADIOMEDICINE • Previous Articles Next Articles

Method of core-beam CT imaging scatter correction based on Monte Carlo simulations

MENG Huipeng^1,²(),WANG Keqiang¹,FU Juan²,FENG Yuanming¹()

1. School of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
2. Characteristic Medical Center of PAP, Tianjin 300162, China

Received:2019-02-28 Revised:2019-04-28 Accepted:2019-04-28 Online:2019-08-20 Published:2019-08-21
Contact: Yuanming FENG E-mail:hongyi1218@163.com;ymfeng@tju.edu.cn
About author:MENG Huipeng(male) was born in October 1981, and obtained his master’s degree from Nankai University in 2011. Now he is a doctoral candidate at Tianjin University, majoring in radiotherapy physics for tumor and network-related research, physicist, senior engineer. E-mail: hongyi1218@163.com
Supported by:
the Seed Fund Project of Affiliated Hospital of Logistics University of PAP(FYM201620)

图像类型 Image type	ROI1	ROI2	ROI3	ROI4	ROI5	ROI6	ROI7	RMSE
pCT	-995	-196	-96	-37	116	344	945	-
未校准 Uncorrected	-950	-208	-97	-71	110	291	1108	68
OBI法 OBI method	-998	-202	-99	-54	128	323	980	18
CITK法 CITK method	-994	-198	-101	-40	120	341	951	4

组织 Issue	图像类型 Image type	1		2		3		4
组织 Issue	图像类型 Image type	平均值Mean value	标准差 Standard deviation	平均值Mean value	标准差 Standard deviation	平均值Mean value	标准差 Standard deviation	平均值Mean value	标准差 Standard deviation
头部Head	未校准 Uncorrected	42.5	11.9	137.5	35.0	51.5	15.0	17.8	4.6
	OBI法 OBI method	7.6	2.1	36.8	9.4	22.6	6.6	13.9	3.6
	CITK法 CITK method	6.2	1.7	9.4	2.2	4.5	1.3	4.9	1.3
胸部Chest	未校准 Uncorrected	38.8	10.9	147.6	37.6	52.2	15.2	39.2	10.3
	OBI法 OBI method	23.7	6.6	91.4	23.3	15.5	4.5	8.0	2.1
	CITK法 CITK method	5.0	1.4	9.9	2.5	9.8	2.8	2.9	0.7
腹部Abdomen	未校准 Uncorrected	24.0	6.7	111.1	28.3	21.5	6.2	13.8	3.6
	OBI法 OBI method	7.5	2.1	41.5	10.6	76.9	22.4	6.7	1.8
	CITK法 CITK method	6.9	1.9	9.6	3.7	7.7	2.3	5.3	1.4
盆腔Pelvic	未校准 Uncorrected	24.3	6.8	85.3	21.7	9.3	2.7	83.5	21.8
	OBI法 OBI method	17.1	4.8	26.0	6.6	7.7	2.3	56.1	14.6
	CITK法 CITK method	7.9	2.2	8.9	2.3	6.9	2.0	9.6	1.9

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Method of core-beam CT imaging scatter correction based on Monte Carlo simulations

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