| Presentation | 2001/1/18 Noise reduction of cone-beam CT images using wavelet analysis Yi-Qiang Yang, Nobuyuki Nakamori, Yasuo Yoshida, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have studied the noise reduction of cone-beam CT images that are degraded by statistical fluctuations in x-ray photon distribution. To reduce the noise, we have used wavelet transform modulus maxima(WTMM) method proposed by Mallat et al. We processed the wavelet transform modulus of filtered-projection data, depending on ratio of two detail components and reconstructed the CT image with these processed projection data. The performance of noise reduction with this method is compared that with wavelet shrinkage(wavelet threshold)method. Our preliminary results show that WTMM method is successful to reduce the noise of cone-beam CT images. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cone-beam CT / Poisson noise / multiscale wavelet / noise reduction / image restration |
| Paper # | MI2000-54 |
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| Conference Information | |
| Committee | MI |
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| Conference Date | 2001/1/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Medical Imaging (MI) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Noise reduction of cone-beam CT images using wavelet analysis |
| Sub Title (in English) | |
| Keyword(1) | Cone-beam CT |
| Keyword(2) | Poisson noise |
| Keyword(3) | multiscale wavelet |
| Keyword(4) | noise reduction |
| Keyword(5) | image restration |
| 1st Author's Name | Yi-Qiang Yang |
| 1st Author's Affiliation | Department of Electronics and Information Science, Kyoto Institute of Technology() |
| 2nd Author's Name | Nobuyuki Nakamori |
| 2nd Author's Affiliation | Department of Electronics and Information Science, Kyoto Institute of Technology |
| 3rd Author's Name | Yasuo Yoshida |
| 3rd Author's Affiliation | Department of Electronics and Information Science, Kyoto Institute of Technology |
| Date | 2001/1/18 |
| Paper # | MI2000-54 |
| Volume (vol) | vol.100 |
| Number (no) | 596 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |