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- W2024843240 abstract "As CT scanners continue to increase in speed and to collect more data per rotation, transmitting raw data across the slip ring and storing raw data can be very challenging. While lossy compression can offer a significant reduction in data set size, it introduces errors to the measurements. We examined the effect of noise of different frequencies in the view (temporal) direction as well as at different locations in the detector arc. Our results showed that only low temporal frequency errors in the center detectors can contribute to errors in the center of the reconstructed field-of-view (FOV). On the other hand, high temporal frequency errors only contribute to errors in the periphery of the reconstructed FOV. Whether image errors arise from compression or electronic noise, their relative sensitivity to different frequencies and detectors is an important consideration for applications such as cardiac CT, where the center of the FOV may be considered the most critical region. Therefore, when limiting data rate is essential, detectors could be allocated different bit-rates for compression based on the tolerable frequency content of their errors and their spatial location." @default.
- W2024843240 created "2016-06-24" @default.
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- W2024843240 date "2008-03-06" @default.
- W2024843240 modified "2023-09-23" @default.
- W2024843240 title "Effect of the frequency content and spatial location of raw data errors on CT images" @default.
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- W2024843240 doi "https://doi.org/10.1117/12.770552" @default.
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