Journal
JOURNAL OF THORACIC IMAGING
Volume 36, Issue 2, Pages 84-94Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/RTI.0000000000000569
Keywords
photon-counting computed tomography; spectral computed tomography; thoracic imaging
Funding
- Intramural Research Program of the National Institutes of Health Clinical Center
- National Institutes of Health
- Siemens Medical Solutions
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Photon-counting computed tomography is a promising technology with the potential to improve CT imaging and bring benefits to clinical applications. The photon-counting detectors in this technology offer higher dose efficiency and spatial resolution compared to conventional detectors, despite facing some challenges.
Photon-counting computed tomography (CT) is a developing technology that has the potential to address some limitations of CT imaging and bring about improvements and potentially new applications to this field. Photon-counting detectors have a fundamentally different detection mechanism from conventional CT energy-integrating detectors that can improve dose efficiency, spatial resolution, and energy-discrimination capabilities. In the past decade, promising human studies have been reported in the literature that have demonstrated benefits of this relatively new technology for various clinical applications. In this review, we provide a succinct description of the photon-counting detector technology and its detection mechanism in comparison with energy-integrating detectors in a manner understandable for clinicians and radiologists, introduce benefits and some of the existing challenges present in this technology, and provide an overview of the current status and potential clinical applications of this technology in imaging of the thorax by providing example images acquired with an investigational whole-body photon-counting CT scanner.
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