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• W2950862176 abstract "Phase-contrast X-ray imaging can improve the visibility of weakly absorbing objects (e.g. soft tissues) by an order of magnitude or more compared to conventional radiographs. Previously, it has been shown that combining phase retrieval with computed tomography (CT) can increase the signal-to-noise ratio (SNR) by up to two orders of magnitude over conventional CT at the same radiation dose, without loss of image quality. Our experiments reveal that as radiation dose decreases, the relative improvement in SNR increases. We discovered this enhancement can be traded for a reduction in dose greater than the square of the gain in SNR. Upon reducing the dose 300 fold, the phase-retrieved SNR was still almost 10 times larger than the absorption contrast data. This reveals the potential for dose reduction factors in the tens of thousands without loss in image quality, which would have a profound impact on medical and industrial imaging applications." @default.
• W2950862176 created "2019-06-27" @default.
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• W2950862176 date "2017-04-11" @default.
• W2950862176 modified "2023-09-26" @default.
• W2950862176 title "CT dose reduction factors in the thousands using X-ray phase contrast" @default.
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• W2950862176 hasPublicationYear "2017" @default.
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