### Abstract

In order to realistically simulate the projections of X-ray computed tomography (XCT), a projection simulation algorithm is presented by combining the X-ray energy spectrum distribution function with the tissue boundary approximation strategy. Firstly, the geometrical shapes and CT numbers of all sub-regions of a phantom are determined. Next, mapping these CT numbers onto corresponding tissue densities and elemental mass fraction, the tissue mass attenuation coefficients are calculated by XCOM software. Finally, the X-ray energy spectrum distribution function and projections that have been attenuated are computed according to the X-ray energy spectrum parameters, tissue densities, tissue mass attenuation coefficients and the distance between adjacent boundaries. This algorithm is simpler than analytic simulation programming, and needs lesser storage and has higher precision in contrast to the discrete simulation. The anticipated beam hardening effects are clearly shown after carrying out the 3-demension reconstruction of Feldkamp cone beam.

Original language | English (US) |
---|---|

Pages (from-to) | 901-905 |

Number of pages | 5 |

Journal | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University |

Volume | 40 |

Issue number | 8 |

State | Published - Aug 2006 |

### Fingerprint

### Keywords

- Computed tomography
- Cone beam
- Energy spectrum distribution
- Phantom projection
- Projection simulation

### ASJC Scopus subject areas

- Engineering(all)

### Cite this

*Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University*,

*40*(8), 901-905.

**Simulation calculation of phantom projections based on physics model of medical X-ray imaging.** / Tang, Shao Jie; Mou, Xuan Qin; Yan, Hao.

Research output: Contribution to journal › Article

*Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University*, vol. 40, no. 8, pp. 901-905.

}

TY - JOUR

T1 - Simulation calculation of phantom projections based on physics model of medical X-ray imaging

AU - Tang, Shao Jie

AU - Mou, Xuan Qin

AU - Yan, Hao

PY - 2006/8

Y1 - 2006/8

N2 - In order to realistically simulate the projections of X-ray computed tomography (XCT), a projection simulation algorithm is presented by combining the X-ray energy spectrum distribution function with the tissue boundary approximation strategy. Firstly, the geometrical shapes and CT numbers of all sub-regions of a phantom are determined. Next, mapping these CT numbers onto corresponding tissue densities and elemental mass fraction, the tissue mass attenuation coefficients are calculated by XCOM software. Finally, the X-ray energy spectrum distribution function and projections that have been attenuated are computed according to the X-ray energy spectrum parameters, tissue densities, tissue mass attenuation coefficients and the distance between adjacent boundaries. This algorithm is simpler than analytic simulation programming, and needs lesser storage and has higher precision in contrast to the discrete simulation. The anticipated beam hardening effects are clearly shown after carrying out the 3-demension reconstruction of Feldkamp cone beam.

AB - In order to realistically simulate the projections of X-ray computed tomography (XCT), a projection simulation algorithm is presented by combining the X-ray energy spectrum distribution function with the tissue boundary approximation strategy. Firstly, the geometrical shapes and CT numbers of all sub-regions of a phantom are determined. Next, mapping these CT numbers onto corresponding tissue densities and elemental mass fraction, the tissue mass attenuation coefficients are calculated by XCOM software. Finally, the X-ray energy spectrum distribution function and projections that have been attenuated are computed according to the X-ray energy spectrum parameters, tissue densities, tissue mass attenuation coefficients and the distance between adjacent boundaries. This algorithm is simpler than analytic simulation programming, and needs lesser storage and has higher precision in contrast to the discrete simulation. The anticipated beam hardening effects are clearly shown after carrying out the 3-demension reconstruction of Feldkamp cone beam.

KW - Computed tomography

KW - Cone beam

KW - Energy spectrum distribution

KW - Phantom projection

KW - Projection simulation

UR - http://www.scopus.com/inward/record.url?scp=33749839573&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33749839573&partnerID=8YFLogxK

M3 - Article

VL - 40

SP - 901

EP - 905

JO - Journal of Xi'an Jiaotong University (Medical Sciences)

JF - Journal of Xi'an Jiaotong University (Medical Sciences)

SN - 1671-8259

IS - 8

ER -