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Initial investigation into lower-cost CT for resource limited regions of the world

Publication ,  Conference
Dobbins, JT; Wells, JR; Segars, WP; Li, CM; Kigongo, CJN
Published in: Progress in Biomedical Optics and Imaging - Proceedings of SPIE
December 1, 2010

This paper describes an initial investigation into means for producing lower-cost CT scanners for resource limited regions of the world. In regions such as sub-Saharan Africa, intermediate level medical facilities serving millions have no CT machines, and lack the imaging resources necessary to determine whether certain patients would benefit from being transferred to a hospital in a larger city for further diagnostic workup or treatment. Low-cost CT scanners would potentially be of immense help to the healthcare system in such regions. Such scanners would not produce state-of-the-art image quality, but rather would be intended primarily for triaging purposes to determine the patients who would benefit from transfer to larger hospitals. The lower-cost scanner investigated here consists of a fixed digital radiography system and a rotating patient stage. This paper describes initial experiments to determine if such a configuration is feasible. Experiments were conducted using (1) x-ray image acquisition, a physical anthropomorphic chest phantom, and a flat-panel detector system, and (2) a computer-simulated XCAT chest phantom. Both the physical phantom and simulated phantom produced excellent image quality reconstructions when the phantom was perfectly aligned during acquisition, but artifacts were noted when the phantom was displaced to simulate patient motion. An algorithm was developed to correct for motion of the phantom and demonstrated success in correcting for 5-mm motion during 360-degrce acquisition of images. These experiments demonstrated feasibility for this approach, but additional work is required to determine the exact limitations produced by patient motion. © 2010 SPIE.

Duke Scholars

Published In

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

DOI

ISSN

1605-7422

ISBN

9780819480231

Publication Date

December 1, 2010

Volume

7622

Issue

PART 2
 

Citation

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MLA
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Dobbins, J. T., Wells, J. R., Segars, W. P., Li, C. M., & Kigongo, C. J. N. (2010). Initial investigation into lower-cost CT for resource limited regions of the world. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 7622). https://doi.org/10.1117/12.844293
Dobbins, J. T., J. R. Wells, W. P. Segars, C. M. Li, and C. J. N. Kigongo. “Initial investigation into lower-cost CT for resource limited regions of the world.” In Progress in Biomedical Optics and Imaging - Proceedings of SPIE, Vol. 7622, 2010. https://doi.org/10.1117/12.844293.
Dobbins JT, Wells JR, Segars WP, Li CM, Kigongo CJN. Initial investigation into lower-cost CT for resource limited regions of the world. In: Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 2010.
Dobbins, J. T., et al. “Initial investigation into lower-cost CT for resource limited regions of the world.” Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 7622, no. PART 2, 2010. Scopus, doi:10.1117/12.844293.
Dobbins JT, Wells JR, Segars WP, Li CM, Kigongo CJN. Initial investigation into lower-cost CT for resource limited regions of the world. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 2010.
Journal cover image

Published In

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

DOI

ISSN

1605-7422

ISBN

9780819480231

Publication Date

December 1, 2010

Volume

7622

Issue

PART 2