| PHASE CORRECTION AND BAND-PASS FILTERS IN CT IMAGING |
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| 作者姓名： | 赵生妹 蒋大真 |
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| 作者单位： | Shanghai Institute of Nuclear Research Academia Sinica，Shanghai Institute of Nuclear Research Academia Sinica |
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| 摘 要： | This paper reports the use of the fast Fourier transform (FFT) in the direct Fourier transform method (DFM) in Computerized Tomography (CT) reconstruction. Phase corrections are needed in the CT reconstruction. In order to eliminate the image distortion from the basic DFM, Padding and band-pass filters are used in the improved DFM. Finally, some reconstructions from simulated projections and several experimental results are given.
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PHASE CORRECTION AND BAND-PASS FILTERS IN CT IMAGING |
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| Zhao Shengmei and Jiang Dazhen.PHASE CORRECTION AND BAND-PASS FILTERS IN CT IMAGING[J].Nuclear Science and Techniques,1993(2). |
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| Authors: | Zhao Shengmei and Jiang Dazhen |
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| Abstract: | This paper reports the use of the fast Fourier transform (FFT) in the direct Fourier transform method (DFM) in Computerized Tomography (CT) reconstruction. Phase corrections are needed in the CT reconstruction. In order to eliminate the image distortion from the basic DFM, Padding and band-pass filters are used in the improved DFM. Finally, some reconstructions from simulated projections and several experimental results are given. |
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| Keywords: | CT imaging Phase correction Band-pass filters Fourier transformation Padding |
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