| Presentation | 2003/9/12 Visual evaluation of X-ray images using Markov chain Takanaga NIIMI, Kuniharu IMAI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Visual evaluation of X-ray image with C-D diagram is widely used as a QC method of imaging monitors in hospitals. The accuracy of the visual evaluation is theoretically improved by observing test samples of X-ray images over and over again. However, the repetition of the observation probably causes the observer's visual fatigue. Consequently, the accuracy may be down. In this paper, we propose new visual evaluation with C-D diagram made on the basis of decision expectation of X-ray imaging signals which is deduced from Markov chain. In a Markov process, decision probability of the signals in an X-ray image sample changes with the number of observation times and finally converges at a certain value. C-D diagram was made based on the decision expectation, which was calculated, from the signal strength and its convergence probability. The C-D diagram with Markov chain is in good accord with that obtained from 30 times observation. The result suggests that it is possible to reduce the observation times by using the Markov chain. Therefore, we propose that the C-D diagram with Markov chain is useful for visual evaluation of X-ray image. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Visual evaluation of X-ray images / C-D diagram / Markov chain |
| Paper # | MI2003-44 |
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| Conference Information | |
| Committee | MI |
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| Conference Date | 2003/9/12(1days) |
| Place (in Japanese) | (See Japanese page) |
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| 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) | Visual evaluation of X-ray images using Markov chain |
| Sub Title (in English) | |
| Keyword(1) | Visual evaluation of X-ray images |
| Keyword(2) | C-D diagram |
| Keyword(3) | Markov chain |
| 1st Author's Name | Takanaga NIIMI |
| 1st Author's Affiliation | Department of Radiology, Nagoya Daini Red Cross Hospital() |
| 2nd Author's Name | Kuniharu IMAI |
| 2nd Author's Affiliation | School of Health Sciences, Nagoya University |
| Date | 2003/9/12 |
| Paper # | MI2003-44 |
| Volume (vol) | vol.103 |
| Number (no) | 319 |
| Page | pp.pp.- |
| #Pages | 6 |
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