Flat-panel conebeam CT in the clinic: history and current state
Fahrig R, Jaffray DA, Sechopoulos I, Webster Stayman J (2021)
Publication Type: Journal article, Review article
Publication year: 2021
Journal
Book Volume: 8
Article Number: 052115
Journal Issue: 5
Abstract
Research into conebeam CT concepts began as soon as the first clinical single-slice CT scanner was conceived. Early implementations of conebeam CT in the 1980s focused on high-contrast applications where concurrent high resolution (<200 μm), for visualization of small contrast-filled vessels, bones, or teeth, was an imaging requirement that could not be met by the contemporaneous CT scanners. However, the use of nonlinear imagers, e.g., x-ray image intensifiers, limited the clinical utility of the earliest diagnostic conebeam CT systems. The development of consumer-electronics large-area displays provided a technical foundation that was leveraged in the 1990s to first produce large-area digital x-ray detectors for use in radiography and then compact flat panels suitable for high-resolution and high-frame-rate conebeam CT. In this review, we show the concurrent evolution of digital flat panel (DFP) technology and clinical conebeam CT. We give a brief summary of conebeam CT reconstruction, followed by a brief review of the correction approaches for DFP-specific artifacts. The historical development and current status of flat-panel conebeam CT in four clinical areas - breast, fixed C-arm, image-guided radiation therapy, and extremity/head - is presented. Advances in DFP technology over the past two decades have led to improved visualization of high-contrast, high-resolution clinical tasks, and image quality now approaches the soft-tissue contrast resolution that is the standard in clinical CT. Future technical developments in DFPs will enable an even broader range of clinical applications; research in the arena of flat-panel CT shows no signs of slowing down.
Involved external institutions
University of Texas MD Anderson Cancer Center
United States (USA) (US)
Radboud University Nijmegen Medical Centre / Radboudumc of voluit Radboud Universitair Medisch Centrum (UMC)
Netherlands (NL)
Johns Hopkins University (JHU)
United States (USA) (US)
United States (USA) (US)
Radboud University Nijmegen Medical Centre / Radboudumc of voluit Radboud Universitair Medisch Centrum (UMC)
Netherlands (NL)
Johns Hopkins University (JHU)
United States (USA) (US)
How to cite
APA:
Fahrig, R., Jaffray, D.A., Sechopoulos, I., & Webster Stayman, J. (2021). Flat-panel conebeam CT in the clinic: history and current state. Journal of Medical Imaging, 8(5). https://dx.doi.org/10.1117/1.JMI.8.5.052115
MLA:
Fahrig, Rebecca, et al. "Flat-panel conebeam CT in the clinic: history and current state." Journal of Medical Imaging 8.5 (2021).
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