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 proceedingConference contribution

1 Citation (Scopus)

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 languageEnglish (US)
Title of host publicationMedical Imaging 2010
Subtitle of host publicationPhysics of Medical Imaging
Volume7622
EditionPART 2
DOIs
StatePublished - Dec 1 2010
EventMedical Imaging 2010: Physics of Medical Imaging - San Diego, CA, United States
Duration: Feb 15 2010Feb 18 2010

Other

OtherMedical Imaging 2010: Physics of Medical Imaging
CountryUnited States
CitySan Diego, CA
Period2/15/102/18/10

Fingerprint

Cone-Beam Computed Tomography
Cones
cones
Demonstrations
Detectors
detectors
wire
Wire
breast
Breast
Masks
Paraffin
paraffins
Paraffins
masks
Aluminum
x ray sources
Optical resolving power
Image resolution
Image quality

Keywords

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

ASJC Scopus subject areas

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

Cite this

Shen, Y., Zhong, Y., Chen, L., Lai, C. J., Liu, X., Han, 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., Vol. 7622). [76223B] 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; Lai, Chao Jen; Liu, Xinming; Han, Tao; Yi, Ying; You, Zhicheng; Ge, Shuaiping; Wang, Tianpeng; Shaw, Chris C.

Medical Imaging 2010: Physics of Medical Imaging. Vol. 7622 PART 2. ed. 2010. 76223B.

Research output: Chapter in Book/Report/Conference proceedingConference 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, vol. 7622, 76223B, Medical Imaging 2010: Physics of Medical Imaging, San Diego, CA, United States, 2/15/10. https://doi.org/10.1117/12.844423
Shen Y, Zhong Y, Chen L, Lai CJ, Liu X, Han T et al. 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. Vol. 7622. 2010. 76223B https://doi.org/10.1117/12.844423
Shen, Youtao ; Zhong, Yuncheng ; Chen, Lingyun ; Lai, Chao Jen ; Liu, Xinming ; Han, Tao ; Yi, Ying ; You, Zhicheng ; Ge, Shuaiping ; Wang, Tianpeng ; Shaw, Chris C. / Demonstration of dual resolution cone beam CT technique with an a-Si/a-Se flat panel detector. Medical Imaging 2010: Physics of Medical Imaging. Vol. 7622 PART 2. ed. 2010.
@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",
month = "12",
day = "1",
doi = "10.1117/12.844423",
language = "English (US)",
isbn = "9780819480231",
volume = "7622",
booktitle = "Medical Imaging 2010",
edition = "PART 2",

}

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 - 2010/12/1

Y1 - 2010/12/1

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

VL - 7622

BT - Medical Imaging 2010

ER -