发明名称 |
NOISE REDUCTION IN DUAL-ENERGY X-RAY IMAGING |
摘要 |
<p>It is described a method for reducing noise of X-ray attenuation data related to a first and second spectral X-ray data acquisition. The method comprises the steps of (a) acquiring data representing the X-ray attenuation behavior of a region of interest, (b) determining a first and a second attenuation-base line integral for the first and the second X-ray acquisition, respectively, and (c) calculating expected first and second signal to noise ratios for the first and the second attenuation-base line integral based on given signal to noise ratios for the first and second spectral X-ray data acquisition, respectively. The method further comprises the steps of (d) repeating the above mentioned steps of determining the attenuation-base line integrals and calculating the expected signal to noise ratios for a further first spectral X-ray data acquisition and (e) selecting improved spectral X-ray data acquisitions in order to enhance the overall signal to noise ratio of a final X-ray image.</p> |
申请公布号 |
WO2007110794(A1) |
申请公布日期 |
2007.10.04 |
申请号 |
WO2007IB50877 |
申请日期 |
2007.03.14 |
申请人 |
PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH;KONINKLIJKE PHILIPS ELECTRONICS N.V.;ROESSL, EWALD;ZIEGLER, ANDY |
发明人 |
ROESSL, EWALD;ZIEGLER, ANDY |
分类号 |
G06T5/50 |
主分类号 |
G06T5/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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