Determination of noise equivalent quanta of medical screen-films
Noise equivalent quanta (NEQ) of Lanex Regular/T Mat G and Lanex Regular/T Mat L screen-film combinations were determined using modulation transfer function (MTF) and noise power spectrum (NPS) data. To accomplish this, average gamma of the radiograph was computed, the MTF and the NPS data were line...
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Penerbit UTM Press
2004
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| Online Access: | http://eprints.utm.my/6733/1/Jur_Teknologi_40C_2004_11-19.pdf http://eprints.utm.my/6733/ |
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| author | Wan Hassan, Wan Muhamad Saridan Munajat, Yusof Sahibuddin, Shamsul |
| author_facet | Wan Hassan, Wan Muhamad Saridan Munajat, Yusof Sahibuddin, Shamsul |
| author_sort | Wan Hassan, Wan Muhamad Saridan |
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| content_provider | Universiti Teknologi Malaysia |
| content_source | UTM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Noise equivalent quanta (NEQ) of Lanex Regular/T Mat G and Lanex Regular/T Mat L screen-film combinations were determined using modulation transfer function (MTF) and noise power spectrum (NPS) data. To accomplish this, average gamma of the radiograph was computed, the MTF and the NPS data were linearly interpolated and these values were used to compute the NEQ by means of a computer program. The computation shows that for spatial frequency 0–0.7 cycles/mm the NEQ of Lanex Regular/T Mat G is slightly lower than that of Lanex Regular/T Mat L, for spatial frequency 0.7–1.5 cycles/mm the NEQ of both are almost the same, and for frequencies greater than 1.5 cycles/mm the NEQ of the former is greater than that of the latter. Relatively, this indicates that low frequency signals show better on Lanex Rregula/T Mat L, but high frequency signals show better on Lanex Regular/T Mat G. |
| format | Article |
| id | my.utm.eprints-6733 |
| institution | Universiti Teknologi Malaysia |
| language | en |
| publishDate | 2004 |
| publisher | Penerbit UTM Press |
| record_format | eprints |
| spelling | my.utm.eprints-67332017-11-01T04:17:37Z http://eprints.utm.my/6733/ Determination of noise equivalent quanta of medical screen-films Wan Hassan, Wan Muhamad Saridan Munajat, Yusof Sahibuddin, Shamsul QC Physics Noise equivalent quanta (NEQ) of Lanex Regular/T Mat G and Lanex Regular/T Mat L screen-film combinations were determined using modulation transfer function (MTF) and noise power spectrum (NPS) data. To accomplish this, average gamma of the radiograph was computed, the MTF and the NPS data were linearly interpolated and these values were used to compute the NEQ by means of a computer program. The computation shows that for spatial frequency 0–0.7 cycles/mm the NEQ of Lanex Regular/T Mat G is slightly lower than that of Lanex Regular/T Mat L, for spatial frequency 0.7–1.5 cycles/mm the NEQ of both are almost the same, and for frequencies greater than 1.5 cycles/mm the NEQ of the former is greater than that of the latter. Relatively, this indicates that low frequency signals show better on Lanex Rregula/T Mat L, but high frequency signals show better on Lanex Regular/T Mat G. Penerbit UTM Press 2004-06 Article PeerReviewed application/pdf en http://eprints.utm.my/6733/1/Jur_Teknologi_40C_2004_11-19.pdf Wan Hassan, Wan Muhamad Saridan and Munajat, Yusof and Sahibuddin, Shamsul (2004) Determination of noise equivalent quanta of medical screen-films. Jurnal Teknologi (40C). pp. 11-19. ISSN 0127-9696 |
| spellingShingle | QC Physics Wan Hassan, Wan Muhamad Saridan Munajat, Yusof Sahibuddin, Shamsul Determination of noise equivalent quanta of medical screen-films |
| title | Determination of noise equivalent quanta of medical screen-films
|
| title_full | Determination of noise equivalent quanta of medical screen-films
|
| title_fullStr | Determination of noise equivalent quanta of medical screen-films
|
| title_full_unstemmed | Determination of noise equivalent quanta of medical screen-films
|
| title_short | Determination of noise equivalent quanta of medical screen-films
|
| title_sort | determination of noise equivalent quanta of medical screen-films |
| topic | QC Physics |
| url | http://eprints.utm.my/6733/1/Jur_Teknologi_40C_2004_11-19.pdf http://eprints.utm.my/6733/ |
| url_provider | http://eprints.utm.my/ |