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Thoracic Applications of Spectral CT Scan
CHESTThoracic imaging with CT scan has become an essential component in the evaluation of respiratory and thoracic diseases. Providers have historically used conventional single-energy CT; however, prevalence of dual-energy CT (DECT) is increasing, and as such, it is important for thoracic physicians to recognize the utility and limitations of this ...
Jonathan Moore +6 more
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CT spectral projection imaging
2009 IEEE Nuclear Science Symposium Conference Record (NSS/MIC), 2009Dual energy x-ray computed tomography (DECT) has gained a significant attention in recent years. The technology offers the potential to differentiate different materials, and therefore provides the possibility of identifying different pathologies.
null Jiang Hsieh +8 more
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2013
Spectral CT algorithms generally target two different tasks: On one hand, it is of interest to distinguish between two materials that yield the same range of CT numbers in a standard CT image. Two or more spectral CT measurement channels with distinct spectral weightings often yield an improved segmentation between the two materials, both in a ...
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Spectral CT algorithms generally target two different tasks: On one hand, it is of interest to distinguish between two materials that yield the same range of CT numbers in a standard CT image. Two or more spectral CT measurement channels with distinct spectral weightings often yield an improved segmentation between the two materials, both in a ...
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Methods for Spectral CT Imaging
2019From the earliest days of X-ray computed tomography (CT), it was realized that measurements made with different X-ray spectra could be used to differentiate materials having different atomic numbers. Successful implementation of this technique, often referred to as dual-energy CT, has occurred over the last decade (circa 2009–2019), bringing with it ...
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Algorithms for MARS spectral CT.
2015This thesis reports on algorithmic design and software development completed for the Medipix All Resolution System (MARS) multi-energy CT scanner. Two areas of research are presented - the speed and usability improvements made to the post-reconstruction material decomposition software; and the development of two algorithms designed for the ...
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Physics of Spectral CT Measurements
2013Figure 2.1 depicts the setup of a spectral CT x-ray attenuation measurement. The source S emits a flux of x-ray quanta at an object. The object consists of x-ray-attenuating materials that are described by their spectral attenuation coefficient μ( E , r ) at position r . The detector registers the quanta passing through the object.
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RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren, 2015
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Clinical Motivation for Spectral CT
2013Compared to other imaging modalities, the distinctive strength of conventional CT imaging is its ability to acquire volumetric, morphological information of the patient's anatomy in a fast, reliable, and easy way. With modern CT systems, the patient can be scanned from head to toe in just a few seconds with an isotropic spatial resolution better ...
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Large Graph Clustering With Simultaneous Spectral Embedding and Discretization
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2021Zhen Wang, Zhaoqing Li, Rong Wang
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Histograms of oriented mosaic gradients for snapshot spectral image description
ISPRS Journal of Photogrammetry and Remote Sensing, 2022+2 more
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