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	Projection models and correction of collimator blurring effect in SPECT
	Ma Tianyu ; Jin Yongjie ; Wu Zhaoxia ; Sun Xishan
	2010-05-06 ; 2010-05-06
关键词	Practical Theoretical or Mathematical/ collimators image enhancement image reconstruction image resolution mean square error methods medical image processing single photon emission computed tomography/ collimator blurring effect single photon emission computed tomography image reconstruction image resolution normalized mean square error contrast to noise ratio reconstruction time image quality SPECT/ A8760K Nuclear medicine, emission tomography A0260 Numerical approximation and analysis A0785 X-ray, gamma-ray instruments and techniques A8770E Patient diagnostic methods and instrumentation B7510R Nuclear medicine, emission tomography B7450 X-ray and gamma-ray equipment B6135 Optical, image and video signal processing C7330 Biology and medical computing
中文摘要	The choice of the projection model is an important factor in single photon emission computed tomography (SPECT) image reconstruction. A 3-D collimator model was developed to include the collimator blurring effect. The effects of several commonly used projection models including the delta model, the line model, and the strip model on the reconstruction results were studied using the Jaszczak and Shepp-Logan standard images. The comparisons were based on the image resolution, normalized mean square error, contrast to noise ratio, and reconstruction time. The strip model provides the best reconstruction results among the 2-D projection models, with further enhancement of the image quality achieved by the 3-D collimator model due to the correction of collimator blurring at the cost of increased reconstruction time.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/12018]
专题	清华大学
推荐引用方式 GB/T 7714	Ma Tianyu,Jin Yongjie,Wu Zhaoxia,et al. Projection models and correction of collimator blurring effect in SPECT[J],2010, 2010.
APA	Ma Tianyu,Jin Yongjie,Wu Zhaoxia,&Sun Xishan.(2010).Projection models and correction of collimator blurring effect in SPECT..
MLA	Ma Tianyu,et al."Projection models and correction of collimator blurring effect in SPECT".(2010).

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