Literature DB >> 10587203

A simple theorem relating noise and patient dose in computed tomography.

M D Harpen1.   

Abstract

Presented is a simple model describing the dependence of image noise in computed tomography on the x-ray beam profile. The model is used to derive the x-ray profile which minimizes total image noise at constant integral patient dose. The profile may be produced with a bow-tie-type beam shaping filter. Results of the analysis are validated using a computer simulation of computed tomography (CT) acquisition and reconstruction.

Entities:  

Mesh：

Year:  1999        PMID： 10587203     DOI： 10.1118/1.598778

Source DB:  PubMed          Journal:  Med Phys        ISSN： 0094-2405            Impact factor:   4.071


  11 in total

1.  The noise power spectrum in CT with direct fan beam reconstruction.

Authors:  Jongduk Baek; Norbert J Pelc
Journal:  Med Phys       Date:  2010-05       Impact factor: 4.071

2.  Implementation and Assessment of Dynamic Fluence Field Modulation with Multiple Aperture Devices.

Authors:  Grace J Gang; Andrew Mao; Jeffrey H Siewerdsen; J Webster Stayman
Journal:  Conf Proc Int Conf Image Form Xray Comput Tomogr       Date:  2018-05

3.  Dynamic fluence field modulation in computed tomography using multiple aperture devices.

Authors:  Grace J Gang; Andrew Mao; Wenying Wang; Jeffrey H Siewerdsen; Aswin Mathews; Satomi Kawamoto; Reuven Levinson; J Webster Stayman
Journal:  Phys Med Biol       Date:  2019-05-21       Impact factor: 3.609

4.  Joint Optimization of Fluence Field Modulation and Regularization for Multi-Task Objectives.

Authors:  Grace J Gang; J Webster Stayman
Journal:  Proc SPIE Int Soc Opt Eng       Date:  2018-03-09

5.  Control algorithms for dynamic attenuators.

Authors:  Scott S Hsieh; Norbert J Pelc
Journal:  Med Phys       Date:  2014-06       Impact factor: 4.071

Review 6.  Regularization strategies in statistical image reconstruction of low-dose x-ray CT: A review.

Authors:  Hao Zhang; Jing Wang; Dong Zeng; Xi Tao; Jianhua Ma
Journal:  Med Phys       Date:  2018-09-10       Impact factor: 4.071

7.  Joint Optimization of Fluence Field Modulation and Regularization in Task-Driven Computed Tomography.

Authors:  G J Gang; J H Siewerdsen; J W Stayman
Journal:  Proc SPIE Int Soc Opt Eng       Date:  2017-03-09

8.  Task-driven optimization of CT tube current modulation and regularization in model-based iterative reconstruction.

Authors:  Grace J Gang; Jeffrey H Siewerdsen; J Webster Stayman
Journal:  Phys Med Biol       Date:  2017-03-31       Impact factor: 3.609

9.  Task-Driven Optimization of Fluence Field and Regularization for Model-Based Iterative Reconstruction in Computed Tomography.

Authors:  Grace J Gang; Jeffrey H Siewerdsen; J Webster Stayman
Journal:  IEEE Trans Med Imaging       Date:  2017-10-16       Impact factor: 10.048

10.  A prototype piecewise-linear dynamic attenuator.

Authors:  Scott S Hsieh; Mark V Peng; Christopher A May; Picha Shunhavanich; Dominik Fleischmann; Norbert J Pelc
Journal:  Phys Med Biol       Date:  2016-06-10       Impact factor: 3.609
View more

北京卡尤迪生物科技股份有限公司 © 2022-2023.