Imaging performance of CMOS and a-Si:H flat-panel detectors for C-arm fluoroscopy and cone-beam CT

N. M. Sheth; Matthew Jacobson; W. Zbijewski; G. Kleinszig; S. Vogt; S. Soellradl; J. Bialkowski; W. S. Anderson; C. R. Weiss; G. M. Osgood; J. H. Siewerdsen

doi:10.1117/12.2293780

Imaging performance of CMOS and a-Si:H flat-panel detectors for C-arm fluoroscopy and cone-beam CT

N. M. Sheth, Matthew Jacobson, W. Zbijewski, G. Kleinszig, S. Vogt, S. Soellradl, J. Bialkowski, W. S. Anderson, C. R. Weiss, G. M. Osgood, J. H. Siewerdsen

School of Medicine

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

3 Scopus citations

Abstract

Purpose: CMOS detectors are a potentially advantageous sensor technology for indirect-detection flat-panel detectors (FPDs), offering finer pixel pitch, faster frame rate, and lower electronic noise compared to a-Si:H sensors. This work presents a preliminary analysis of the 2D and 3D imaging performance of both detector technologies. Methods: Two mobile C-arms were equipped with CMOS (Xineos 3030HS) and a-Si:H (PaxScan 3030X) FPDs. Technical assessment includes measurement of spatial resolution (MTF), image noise (NPS), and detective quantum efficiency (DQE). Evaluation of CBCT performance considers soft tissue visibility including axial image MTF, NPS, and noise-equivalent quanta (NEQ). Results: The CMOS detector exhibited lower readout noise and slightly higher spatial resolution as expected. The a- Si:H detector showed about 10-15% higher DQE at low spatial frequencies while the CMOS detector showed greater resilience in DQE at higher spatial frequencies. In matched resolution CBCT, both detectors showed roughly equivalent performance. Conclusion: CMOS detectors benefit performance with respect to high-frequency tasks, but the current work did not demonstrate strong advantage with respect to low-contrast soft-tissue visualization, in part due to light losses in scintillator-semiconductor coupling. Additional advantages include improved frame rate (reduced CBCT scan time). Ongoing work includes further investigation of modified bandwidth filters to take better advantage of underlying noiseresolution properties.

Original language	English (US)
Title of host publication	Medical Imaging 2018
Subtitle of host publication	Physics of Medical Imaging
Editors	Taly Gilat Schmidt, Guang-Hong Chen, Joseph Y. Lo
Publisher	SPIE
ISBN (Electronic)	9781510616356
DOIs	https://doi.org/10.1117/12.2293780
State	Published - 2018
Event	Medical Imaging 2018: Physics of Medical Imaging - Houston, United States Duration: Feb 12 2018 → Feb 15 2018

Publication series

Name	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	10573
ISSN (Print)	1605-7422

Other

Other	Medical Imaging 2018: Physics of Medical Imaging
Country/Territory	United States
City	Houston
Period	2/12/18 → 2/15/18

Keywords

C-arm
CBCT
CMOS
Fluoroscopy
Image quality
Radiography

ASJC Scopus subject areas

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

Access to Document

10.1117/12.2293780

Cite this

Sheth, N. M., Jacobson, M., Zbijewski, W., Kleinszig, G., Vogt, S., Soellradl, S., Bialkowski, J., Anderson, W. S., Weiss, C. R., Osgood, G. M., & Siewerdsen, J. H. (2018). Imaging performance of CMOS and a-Si:H flat-panel detectors for C-arm fluoroscopy and cone-beam CT. In T. G. Schmidt, G.-H. Chen, & J. Y. Lo (Eds.), Medical Imaging 2018: Physics of Medical Imaging Article 105730M (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 10573). SPIE. https://doi.org/10.1117/12.2293780

Imaging performance of CMOS and a-Si:H flat-panel detectors for C-arm fluoroscopy and cone-beam CT. / Sheth, N. M.; Jacobson, Matthew; Zbijewski, W. et al.
Medical Imaging 2018: Physics of Medical Imaging. ed. / Taly Gilat Schmidt; Guang-Hong Chen; Joseph Y. Lo. SPIE, 2018. 105730M (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 10573).

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

Sheth, NM, Jacobson, M, Zbijewski, W, Kleinszig, G, Vogt, S, Soellradl, S, Bialkowski, J, Anderson, WS , Weiss, CR , Osgood, GM & Siewerdsen, JH 2018, Imaging performance of CMOS and a-Si:H flat-panel detectors for C-arm fluoroscopy and cone-beam CT. in TG Schmidt, G-H Chen & JY Lo (eds), Medical Imaging 2018: Physics of Medical Imaging., 105730M, Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 10573, SPIE, Medical Imaging 2018: Physics of Medical Imaging, Houston, United States, 2/12/18. https://doi.org/10.1117/12.2293780

Sheth NM, Jacobson M, Zbijewski W, Kleinszig G, Vogt S, Soellradl S et al. Imaging performance of CMOS and a-Si:H flat-panel detectors for C-arm fluoroscopy and cone-beam CT. In Schmidt TG, Chen GH, Lo JY, editors, Medical Imaging 2018: Physics of Medical Imaging. SPIE. 2018. 105730M. (Progress in Biomedical Optics and Imaging - Proceedings of SPIE). doi: 10.1117/12.2293780

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abstract = "Purpose: CMOS detectors are a potentially advantageous sensor technology for indirect-detection flat-panel detectors (FPDs), offering finer pixel pitch, faster frame rate, and lower electronic noise compared to a-Si:H sensors. This work presents a preliminary analysis of the 2D and 3D imaging performance of both detector technologies. Methods: Two mobile C-arms were equipped with CMOS (Xineos 3030HS) and a-Si:H (PaxScan 3030X) FPDs. Technical assessment includes measurement of spatial resolution (MTF), image noise (NPS), and detective quantum efficiency (DQE). Evaluation of CBCT performance considers soft tissue visibility including axial image MTF, NPS, and noise-equivalent quanta (NEQ). Results: The CMOS detector exhibited lower readout noise and slightly higher spatial resolution as expected. The a- Si:H detector showed about 10-15% higher DQE at low spatial frequencies while the CMOS detector showed greater resilience in DQE at higher spatial frequencies. In matched resolution CBCT, both detectors showed roughly equivalent performance. Conclusion: CMOS detectors benefit performance with respect to high-frequency tasks, but the current work did not demonstrate strong advantage with respect to low-contrast soft-tissue visualization, in part due to light losses in scintillator-semiconductor coupling. Additional advantages include improved frame rate (reduced CBCT scan time). Ongoing work includes further investigation of modified bandwidth filters to take better advantage of underlying noiseresolution properties.",

keywords = "C-arm, CBCT, CMOS, Fluoroscopy, Image quality, Radiography",

author = "Sheth, {N. M.} and Matthew Jacobson and W. Zbijewski and G. Kleinszig and S. Vogt and S. Soellradl and J. Bialkowski and Anderson, {W. S.} and Weiss, {C. R.} and Osgood, {G. M.} and Siewerdsen, {J. H.}",

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year = "2018",

doi = "10.1117/12.2293780",

language = "English (US)",

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AU - Sheth, N. M.

AU - Jacobson, Matthew

AU - Zbijewski, W.

AU - Kleinszig, G.

AU - Vogt, S.

AU - Soellradl, S.

AU - Bialkowski, J.

AU - Anderson, W. S.

AU - Weiss, C. R.

AU - Osgood, G. M.

AU - Siewerdsen, J. H.

PY - 2018

Y1 - 2018

N2 - Purpose: CMOS detectors are a potentially advantageous sensor technology for indirect-detection flat-panel detectors (FPDs), offering finer pixel pitch, faster frame rate, and lower electronic noise compared to a-Si:H sensors. This work presents a preliminary analysis of the 2D and 3D imaging performance of both detector technologies. Methods: Two mobile C-arms were equipped with CMOS (Xineos 3030HS) and a-Si:H (PaxScan 3030X) FPDs. Technical assessment includes measurement of spatial resolution (MTF), image noise (NPS), and detective quantum efficiency (DQE). Evaluation of CBCT performance considers soft tissue visibility including axial image MTF, NPS, and noise-equivalent quanta (NEQ). Results: The CMOS detector exhibited lower readout noise and slightly higher spatial resolution as expected. The a- Si:H detector showed about 10-15% higher DQE at low spatial frequencies while the CMOS detector showed greater resilience in DQE at higher spatial frequencies. In matched resolution CBCT, both detectors showed roughly equivalent performance. Conclusion: CMOS detectors benefit performance with respect to high-frequency tasks, but the current work did not demonstrate strong advantage with respect to low-contrast soft-tissue visualization, in part due to light losses in scintillator-semiconductor coupling. Additional advantages include improved frame rate (reduced CBCT scan time). Ongoing work includes further investigation of modified bandwidth filters to take better advantage of underlying noiseresolution properties.

AB - Purpose: CMOS detectors are a potentially advantageous sensor technology for indirect-detection flat-panel detectors (FPDs), offering finer pixel pitch, faster frame rate, and lower electronic noise compared to a-Si:H sensors. This work presents a preliminary analysis of the 2D and 3D imaging performance of both detector technologies. Methods: Two mobile C-arms were equipped with CMOS (Xineos 3030HS) and a-Si:H (PaxScan 3030X) FPDs. Technical assessment includes measurement of spatial resolution (MTF), image noise (NPS), and detective quantum efficiency (DQE). Evaluation of CBCT performance considers soft tissue visibility including axial image MTF, NPS, and noise-equivalent quanta (NEQ). Results: The CMOS detector exhibited lower readout noise and slightly higher spatial resolution as expected. The a- Si:H detector showed about 10-15% higher DQE at low spatial frequencies while the CMOS detector showed greater resilience in DQE at higher spatial frequencies. In matched resolution CBCT, both detectors showed roughly equivalent performance. Conclusion: CMOS detectors benefit performance with respect to high-frequency tasks, but the current work did not demonstrate strong advantage with respect to low-contrast soft-tissue visualization, in part due to light losses in scintillator-semiconductor coupling. Additional advantages include improved frame rate (reduced CBCT scan time). Ongoing work includes further investigation of modified bandwidth filters to take better advantage of underlying noiseresolution properties.

KW - C-arm

KW - CBCT

KW - CMOS

KW - Fluoroscopy

KW - Image quality

KW - Radiography

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ER -

Imaging performance of CMOS and a-Si:H flat-panel detectors for C-arm fluoroscopy and cone-beam CT

Abstract

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Keywords

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