Effects of energy window width on planar image quality of thyroid imaging using single-headed gamma camera
The aim of this study is to evaluate the effects of energy window width on the planar image quality of thyroid phantom. The values of contrast and signal to noise ratio (SNR) were evaluated in this study. It was carried out by using a thyroid phantom that had been filled with 5.566 mCi Tc-99m rad...
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| Format: | Monograph |
| Language: | English |
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Pusat Pengajian Sains Kesihatan, Universiti Sains Malaysia
2015
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| Online Access: | http://eprints.usm.my/58074/ http://eprints.usm.my/58074/1/NUR%20LIYANA%20BINTI%20JAMSARI-24%20pages.pdf |
| _version_ | 1848883799191977984 |
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| author | Jamsari, Nur Liyana |
| author_facet | Jamsari, Nur Liyana |
| author_sort | Jamsari, Nur Liyana |
| building | USM Institutional Repository |
| collection | Online Access |
| description | The aim of this study is to evaluate the effects of energy window width on the
planar image quality of thyroid phantom. The values of contrast and signal to
noise ratio (SNR) were evaluated in this study. It was carried out by using a
thyroid phantom that had been filled with 5.566 mCi Tc-99m radioactive
sources. A static image of the thyroid phantom was captured using the single headed
gamma camera (Symbia-E) at five different energy window widths of
10%, 15%, 20%, 30% and 40% which was equipped with LEHR collimator,
stopping condition 300 kilocounts and matrix size of 128 x 128. The average
counts obtained were recorded in a table and the contrast and SNR for hot and
cold nodules were calculated using the given equation. For contrast, 15%
energy window width gave the highest values for the hot nodules but for the
cold nodules, it gave lower contrast values compared to 40%. However, the
cold nodule at 15% energy window width gave the higher contrast values than
10%, 20% and 30% energy window widths. For SNR, the energy window width
of 15% gave the highest values at all four nodules (two hot nodules and two
cold nodules). Therefore, the optimum energy window width was the 15% for
Tc-99m radioactive and planar imaging for thyroid. |
| first_indexed | 2025-11-15T18:56:33Z |
| format | Monograph |
| id | usm-58074 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T18:56:33Z |
| publishDate | 2015 |
| publisher | Pusat Pengajian Sains Kesihatan, Universiti Sains Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-580742023-04-26T07:39:10Z http://eprints.usm.my/58074/ Effects of energy window width on planar image quality of thyroid imaging using single-headed gamma camera Jamsari, Nur Liyana TK1-9971 Electrical engineering. Electronics. Nuclear engineering The aim of this study is to evaluate the effects of energy window width on the planar image quality of thyroid phantom. The values of contrast and signal to noise ratio (SNR) were evaluated in this study. It was carried out by using a thyroid phantom that had been filled with 5.566 mCi Tc-99m radioactive sources. A static image of the thyroid phantom was captured using the single headed gamma camera (Symbia-E) at five different energy window widths of 10%, 15%, 20%, 30% and 40% which was equipped with LEHR collimator, stopping condition 300 kilocounts and matrix size of 128 x 128. The average counts obtained were recorded in a table and the contrast and SNR for hot and cold nodules were calculated using the given equation. For contrast, 15% energy window width gave the highest values for the hot nodules but for the cold nodules, it gave lower contrast values compared to 40%. However, the cold nodule at 15% energy window width gave the higher contrast values than 10%, 20% and 30% energy window widths. For SNR, the energy window width of 15% gave the highest values at all four nodules (two hot nodules and two cold nodules). Therefore, the optimum energy window width was the 15% for Tc-99m radioactive and planar imaging for thyroid. Pusat Pengajian Sains Kesihatan, Universiti Sains Malaysia 2015 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/58074/1/NUR%20LIYANA%20BINTI%20JAMSARI-24%20pages.pdf Jamsari, Nur Liyana (2015) Effects of energy window width on planar image quality of thyroid imaging using single-headed gamma camera. Project Report. Pusat Pengajian Sains Kesihatan, Universiti Sains Malaysia. (Submitted) |
| spellingShingle | TK1-9971 Electrical engineering. Electronics. Nuclear engineering Jamsari, Nur Liyana Effects of energy window width on planar image quality of thyroid imaging using single-headed gamma camera |
| title | Effects of energy window width on planar image quality of thyroid imaging using single-headed gamma camera |
| title_full | Effects of energy window width on planar image quality of thyroid imaging using single-headed gamma camera |
| title_fullStr | Effects of energy window width on planar image quality of thyroid imaging using single-headed gamma camera |
| title_full_unstemmed | Effects of energy window width on planar image quality of thyroid imaging using single-headed gamma camera |
| title_short | Effects of energy window width on planar image quality of thyroid imaging using single-headed gamma camera |
| title_sort | effects of energy window width on planar image quality of thyroid imaging using single-headed gamma camera |
| topic | TK1-9971 Electrical engineering. Electronics. Nuclear engineering |
| url | http://eprints.usm.my/58074/ http://eprints.usm.my/58074/1/NUR%20LIYANA%20BINTI%20JAMSARI-24%20pages.pdf |