Demonstration of dual resolution cone beam CT technique with an a-Si/a-Se flat panel detector

Youtao Shen; Yuncheng Zhong; Lingyun Chen; Chao Jen Lai; Xinming Liu; Tao Han; Ying Yi; Zhicheng You; Shuaiping Ge; Tianpeng Wang; Chris C. Shaw

doi:10.1117/12.844423

Demonstration of dual resolution cone beam CT technique with an a-Si/a-Se flat panel detector

Youtao Shen, Yuncheng Zhong, Lingyun Chen, Chao Jen Lai, Xinming Liu, Tao Han, Ying Yi, Zhicheng You, Shuaiping Ge, Tianpeng Wang, Chris C. Shaw

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

1 Scopus citations

Abstract

In this study, we demonstrated volume of interest (VOI) scanning technique in dual resolution cone beam CT (CBCT) breast imaging. A paraffin cylinder with a diameter of 130 mm was used to simulate breast. A wire phantom with a diameter of 15 mm was constructed as VOI. The phantom contains 8 vertically aluminum wires of various diameters surrounded by paraffin. The wire phantom was inserted into the breast phantom 45 mm away from the center. The phantoms were first scanned with a bench top experimental CBCT system at a low exposure level with the detector operated in a binning mode. Then a VOI mask was placed between the x-ray source and the phantoms. The phantoms were scanned again with high exposure level and the detector operated in the non-binning mode. The VOI mask was moved to follow the wire phantom during the whole CT scan to limit the exposures to cover the VOI only. The low resolution and high resolution images were then combined together for reconstruction with FDK algorithm. Visual review of the regular and dual resolution CBCT images shows that thinnest resolvable wire in the dual resolution CBCT images has a diameter of 152 μm. The thinnest resolvable wire in regular CBCT images has a diameter of 254 μm. The estimated dose to the phantom for dual resolution CBCT is 123% of that with regular CBCT at low exposure level. The dual resolution CBCT technique greatly enhances the CT image quality while still remains a low exposure level to the phantom.

Original language	English (US)
Title of host publication	Medical Imaging 2010
Subtitle of host publication	Physics of Medical Imaging
Edition	PART 2
DOIs	https://doi.org/10.1117/12.844423
State	Published - 2010
Event	Medical Imaging 2010: Physics of Medical Imaging - San Diego, CA, United States Duration: Feb 15 2010 → Feb 18 2010

Publication series

Name	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Number	PART 2
Volume	7622
ISSN (Print)	1605-7422

Other

Other	Medical Imaging 2010: Physics of Medical Imaging
Country/Territory	United States
City	San Diego, CA
Period	2/15/10 → 2/18/10

Keywords

Breast imaging
Cone beam computed tomography
Dose saving
Dual resolution
VOI mask
Volume-of interest

ASJC Scopus subject areas

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

Access to Document

10.1117/12.844423

Cite this

Shen, Y., Zhong, Y., Chen, L., Lai, C. J., Liu, X., Han, T., Yi, Y., You, Z., Ge, S., Wang, T., & Shaw, C. C. (2010). Demonstration of dual resolution cone beam CT technique with an a-Si/a-Se flat panel detector. In Medical Imaging 2010: Physics of Medical Imaging (PART 2 ed.). Article 76223B (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 7622, No. PART 2). https://doi.org/10.1117/12.844423

Demonstration of dual resolution cone beam CT technique with an a-Si/a-Se flat panel detector. / Shen, Youtao; Zhong, Yuncheng; Chen, Lingyun et al.
Medical Imaging 2010: Physics of Medical Imaging. PART 2. ed. 2010. 76223B (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 7622, No. PART 2).

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

Shen, Y, Zhong, Y, Chen, L, Lai, CJ, Liu, X, Han, T, Yi, Y, You, Z, Ge, S, Wang, T & Shaw, CC 2010, Demonstration of dual resolution cone beam CT technique with an a-Si/a-Se flat panel detector. in Medical Imaging 2010: Physics of Medical Imaging. PART 2 edn, 76223B, Progress in Biomedical Optics and Imaging - Proceedings of SPIE, no. PART 2, vol. 7622, Medical Imaging 2010: Physics of Medical Imaging, San Diego, CA, United States, 2/15/10. https://doi.org/10.1117/12.844423

@inproceedings{cd13575b7a4341d69cd83a99d20832b1,

title = "Demonstration of dual resolution cone beam CT technique with an a-Si/a-Se flat panel detector",

abstract = "In this study, we demonstrated volume of interest (VOI) scanning technique in dual resolution cone beam CT (CBCT) breast imaging. A paraffin cylinder with a diameter of 130 mm was used to simulate breast. A wire phantom with a diameter of 15 mm was constructed as VOI. The phantom contains 8 vertically aluminum wires of various diameters surrounded by paraffin. The wire phantom was inserted into the breast phantom 45 mm away from the center. The phantoms were first scanned with a bench top experimental CBCT system at a low exposure level with the detector operated in a binning mode. Then a VOI mask was placed between the x-ray source and the phantoms. The phantoms were scanned again with high exposure level and the detector operated in the non-binning mode. The VOI mask was moved to follow the wire phantom during the whole CT scan to limit the exposures to cover the VOI only. The low resolution and high resolution images were then combined together for reconstruction with FDK algorithm. Visual review of the regular and dual resolution CBCT images shows that thinnest resolvable wire in the dual resolution CBCT images has a diameter of 152 μm. The thinnest resolvable wire in regular CBCT images has a diameter of 254 μm. The estimated dose to the phantom for dual resolution CBCT is 123% of that with regular CBCT at low exposure level. The dual resolution CBCT technique greatly enhances the CT image quality while still remains a low exposure level to the phantom.",

keywords = "Breast imaging, Cone beam computed tomography, Dose saving, Dual resolution, VOI mask, Volume-of interest",

author = "Youtao Shen and Yuncheng Zhong and Lingyun Chen and Lai, {Chao Jen} and Xinming Liu and Tao Han and Ying Yi and Zhicheng You and Shuaiping Ge and Tianpeng Wang and Shaw, {Chris C.}",

year = "2010",

doi = "10.1117/12.844423",

language = "English (US)",

isbn = "9780819480231",

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

number = "PART 2",

booktitle = "Medical Imaging 2010",

edition = "PART 2",

note = "Medical Imaging 2010: Physics of Medical Imaging ; Conference date: 15-02-2010 Through 18-02-2010",

}

TY - GEN

T1 - Demonstration of dual resolution cone beam CT technique with an a-Si/a-Se flat panel detector

AU - Shen, Youtao

AU - Zhong, Yuncheng

AU - Chen, Lingyun

AU - Lai, Chao Jen

AU - Liu, Xinming

AU - Han, Tao

AU - Yi, Ying

AU - You, Zhicheng

AU - Ge, Shuaiping

AU - Wang, Tianpeng

AU - Shaw, Chris C.

PY - 2010

Y1 - 2010

N2 - In this study, we demonstrated volume of interest (VOI) scanning technique in dual resolution cone beam CT (CBCT) breast imaging. A paraffin cylinder with a diameter of 130 mm was used to simulate breast. A wire phantom with a diameter of 15 mm was constructed as VOI. The phantom contains 8 vertically aluminum wires of various diameters surrounded by paraffin. The wire phantom was inserted into the breast phantom 45 mm away from the center. The phantoms were first scanned with a bench top experimental CBCT system at a low exposure level with the detector operated in a binning mode. Then a VOI mask was placed between the x-ray source and the phantoms. The phantoms were scanned again with high exposure level and the detector operated in the non-binning mode. The VOI mask was moved to follow the wire phantom during the whole CT scan to limit the exposures to cover the VOI only. The low resolution and high resolution images were then combined together for reconstruction with FDK algorithm. Visual review of the regular and dual resolution CBCT images shows that thinnest resolvable wire in the dual resolution CBCT images has a diameter of 152 μm. The thinnest resolvable wire in regular CBCT images has a diameter of 254 μm. The estimated dose to the phantom for dual resolution CBCT is 123% of that with regular CBCT at low exposure level. The dual resolution CBCT technique greatly enhances the CT image quality while still remains a low exposure level to the phantom.

AB - In this study, we demonstrated volume of interest (VOI) scanning technique in dual resolution cone beam CT (CBCT) breast imaging. A paraffin cylinder with a diameter of 130 mm was used to simulate breast. A wire phantom with a diameter of 15 mm was constructed as VOI. The phantom contains 8 vertically aluminum wires of various diameters surrounded by paraffin. The wire phantom was inserted into the breast phantom 45 mm away from the center. The phantoms were first scanned with a bench top experimental CBCT system at a low exposure level with the detector operated in a binning mode. Then a VOI mask was placed between the x-ray source and the phantoms. The phantoms were scanned again with high exposure level and the detector operated in the non-binning mode. The VOI mask was moved to follow the wire phantom during the whole CT scan to limit the exposures to cover the VOI only. The low resolution and high resolution images were then combined together for reconstruction with FDK algorithm. Visual review of the regular and dual resolution CBCT images shows that thinnest resolvable wire in the dual resolution CBCT images has a diameter of 152 μm. The thinnest resolvable wire in regular CBCT images has a diameter of 254 μm. The estimated dose to the phantom for dual resolution CBCT is 123% of that with regular CBCT at low exposure level. The dual resolution CBCT technique greatly enhances the CT image quality while still remains a low exposure level to the phantom.

KW - Breast imaging

KW - Cone beam computed tomography

KW - Dose saving

KW - Dual resolution

KW - VOI mask

KW - Volume-of interest

UR - http://www.scopus.com/inward/record.url?scp=84873933163&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873933163&partnerID=8YFLogxK

U2 - 10.1117/12.844423

DO - 10.1117/12.844423

M3 - Conference contribution

AN - SCOPUS:84873933163

SN - 9780819480231

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

BT - Medical Imaging 2010

T2 - Medical Imaging 2010: Physics of Medical Imaging

Y2 - 15 February 2010 through 18 February 2010

ER -

Demonstration of dual resolution cone beam CT technique with an a-Si/a-Se flat panel detector

Abstract

Publication series

Other

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this