12 March 2009 The impact of anisotropic sampling on the MTF reconstruction in limited aperture tomosynthesis
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Proceedings Volume 7258, Medical Imaging 2009: Physics of Medical Imaging; 72581P (2009) https://doi.org/10.1117/12.813659
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States
Abstract
In limited angular aperture tomosynthesis systems, the addition of new degrees of freedom for data acquisition, such as angular aperture and sampling, requires specific optimizations. Typical optimization criteria include MTF, SNR, and NEQ. However, the strong anisotropy of the sampling frequency on the zaxis is usually neglected. Considering the signal in slices as the information contained within the volume defined by the slice plane and the z-sampling interval, the MTF of the reconstruction is obtained by integrating reconstruction blur within the slice. The relationship between z-sampling and aperture is proposed in terms of preservation of the DQE.
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H. Souchay, R. Klausz, "The impact of anisotropic sampling on the MTF reconstruction in limited aperture tomosynthesis", Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72581P (12 March 2009); doi: 10.1117/12.813659; https://doi.org/10.1117/12.813659
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