Spiral CT systems and reconstruction methods

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United States of America Patent

PATENT NO 9466137
APP PUB NO 20150332486A1
SERIAL NO

14708866

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Abstract

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The present disclosure discloses a spiral CT system and a reconstruction method thereof. In some embodiments, it is proposed that data missing due to a large pitch is compensated by weighting the complementary projection data of the projection data obtained using the spiral CT system. After the data is complemented, the projection data is rebinned as cone parallel beam data, cone-angle cosine weighting and one-dimensional filtering are implemented on the rebinned data, and parallel beam back projection is finally implemented on the filtered data, to obtain the reconstructed images. In some embodiments, with the above method, the speed of the belt can be increased by more than one time in a case that the existing area of the detectors and the existing speed of the slip ring are unchanged, thereby improving the pass rate of the luggage and maintaining the quality of the reconstructed images unchanged.

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Patent Owner(s)

  • NUCTECH COMPANY LIMITED;TSINGHUA UNIVERSITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Zhiqiang Beijing, CN 401 2412
Huang, Qingping Beijing, CN 52 146
Jin, Xin Beijing, CN 434 3432
Shen, Le Beijing, CN 18 63
Xing, Yuxiang Beijing, CN 55 560
Zhang, Li Beijing, CN 2442 32206

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