Calcification visibility study using combined high dose and low dose cone beam CT projections

Y. Zhong; C. J. Lai; L. Chen; T. Han; Y. Shen; X. Liu; T. Wang; S. Ge; Y. Yi; Z. You; C. C. Shaw

doi:10.1117/12.813780

Calcification visibility study using combined high dose and low dose cone beam CT projections

Y. Zhong, C. J. Lai, L. Chen, T. Han, Y. Shen, X. Liu, T. Wang, S. Ge, Y. Yi, Z. You, C. C. Shaw

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Cone beam breast CT technique provides true three dimensional (3D) images of breast anatomy; however the detectability of calcification is limited due to low exposure levels on each projection. In this study, we investigated the possibility of using anisotropic exposure distributions to improve the visibility of calcifications in the breast CT images. Our approach was to measure the CBCT projections with isotropic high and low exposures separately. Reconstruction was performed upon different combinations of these two sets of projection sequences to investigate the visibility change due to the limited-angle high exposure projections. Our preliminary results show that the visibility is improved with the number of high exposure projections in the combinations. In the future we will measure the CBCT projections with anisotropic exposures while keeping the total exposure constant.

Original language	English (US)
Title of host publication	Medical Imaging 2009
Subtitle of host publication	Physics of Medical Imaging
DOIs	https://doi.org/10.1117/12.813780
State	Published - 2009
Event	Medical Imaging 2009: Physics of Medical Imaging - Lake Buena Vista, FL, United States Duration: Feb 9 2009 → Feb 12 2009

Publication series

Name	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	7258
ISSN (Print)	1605-7422

Other

Other	Medical Imaging 2009: Physics of Medical Imaging
Country/Territory	United States
City	Lake Buena Vista, FL
Period	2/9/09 → 2/12/09

Keywords

Cone beam CT
Micro-calcification
Visibility study
X-ray imaging physics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
Atomic and Molecular Physics, and Optics
Radiology Nuclear Medicine and imaging

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10.1117/12.813780

Cite this

Zhong, Y., Lai, C. J., Chen, L., Han, T., Shen, Y., Liu, X., Wang, T., Ge, S., Yi, Y., You, Z., & Shaw, C. C. (2009). Calcification visibility study using combined high dose and low dose cone beam CT projections. In Medical Imaging 2009: Physics of Medical Imaging Article 72585U (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 7258). https://doi.org/10.1117/12.813780

Zhong, Y, Lai, CJ, Chen, L, Han, T, Shen, Y, Liu, X, Wang, T, Ge, S, Yi, Y, You, Z & Shaw, CC 2009, Calcification visibility study using combined high dose and low dose cone beam CT projections. in Medical Imaging 2009: Physics of Medical Imaging., 72585U, Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 7258, Medical Imaging 2009: Physics of Medical Imaging, Lake Buena Vista, FL, United States, 2/9/09. https://doi.org/10.1117/12.813780

@inproceedings{0df33261436540fcb8617fd90637c4bf,

title = "Calcification visibility study using combined high dose and low dose cone beam CT projections",

abstract = "Cone beam breast CT technique provides true three dimensional (3D) images of breast anatomy; however the detectability of calcification is limited due to low exposure levels on each projection. In this study, we investigated the possibility of using anisotropic exposure distributions to improve the visibility of calcifications in the breast CT images. Our approach was to measure the CBCT projections with isotropic high and low exposures separately. Reconstruction was performed upon different combinations of these two sets of projection sequences to investigate the visibility change due to the limited-angle high exposure projections. Our preliminary results show that the visibility is improved with the number of high exposure projections in the combinations. In the future we will measure the CBCT projections with anisotropic exposures while keeping the total exposure constant.",

keywords = "Cone beam CT, Micro-calcification, Visibility study, X-ray imaging physics",

author = "Y. Zhong and Lai, {C. J.} and L. Chen and T. Han and Y. Shen and X. Liu and T. Wang and S. Ge and Y. Yi and Z. You and Shaw, {C. C.}",

year = "2009",

doi = "10.1117/12.813780",

language = "English (US)",

isbn = "9780819475091",

series = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",

booktitle = "Medical Imaging 2009",

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TY - GEN

T1 - Calcification visibility study using combined high dose and low dose cone beam CT projections

AU - Zhong, Y.

AU - Lai, C. J.

AU - Chen, L.

AU - Han, T.

AU - Shen, Y.

AU - Liu, X.

AU - Wang, T.

AU - Ge, S.

AU - Yi, Y.

AU - You, Z.

AU - Shaw, C. C.

PY - 2009

Y1 - 2009

N2 - Cone beam breast CT technique provides true three dimensional (3D) images of breast anatomy; however the detectability of calcification is limited due to low exposure levels on each projection. In this study, we investigated the possibility of using anisotropic exposure distributions to improve the visibility of calcifications in the breast CT images. Our approach was to measure the CBCT projections with isotropic high and low exposures separately. Reconstruction was performed upon different combinations of these two sets of projection sequences to investigate the visibility change due to the limited-angle high exposure projections. Our preliminary results show that the visibility is improved with the number of high exposure projections in the combinations. In the future we will measure the CBCT projections with anisotropic exposures while keeping the total exposure constant.

AB - Cone beam breast CT technique provides true three dimensional (3D) images of breast anatomy; however the detectability of calcification is limited due to low exposure levels on each projection. In this study, we investigated the possibility of using anisotropic exposure distributions to improve the visibility of calcifications in the breast CT images. Our approach was to measure the CBCT projections with isotropic high and low exposures separately. Reconstruction was performed upon different combinations of these two sets of projection sequences to investigate the visibility change due to the limited-angle high exposure projections. Our preliminary results show that the visibility is improved with the number of high exposure projections in the combinations. In the future we will measure the CBCT projections with anisotropic exposures while keeping the total exposure constant.

KW - Cone beam CT

KW - Micro-calcification

KW - Visibility study

KW - X-ray imaging physics

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DO - 10.1117/12.813780

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T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE

BT - Medical Imaging 2009

T2 - Medical Imaging 2009: Physics of Medical Imaging

Y2 - 9 February 2009 through 12 February 2009

ER -

Calcification visibility study using combined high dose and low dose cone beam CT projections

Abstract

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Keywords

ASJC Scopus subject areas

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