Comparison of CT number between conventional CBCT and imasim software
The aim of this study was to compare the CT number between the conventional Cone Beam Computed Tomography (CBCT) and ImaSim simulation software. The CT numbers in CBCT were performed by using CIRS 062 M electron density phantoms with four types of tissue equivalent plug density phantoms ranging...
| Main Author: | |
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| Format: | Monograph |
| Language: | English |
| Published: |
Pusat Pengajian Sains Kesihatan, Universiti Sains Malaysia
2015
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| Subjects: | |
| Online Access: | http://eprints.usm.my/57944/ http://eprints.usm.my/57944/1/NOR%20FADHILAH%20BINTI%20AHAMAD-24%20PAGES.pdf |
| _version_ | 1848883763279298560 |
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| author | Ahamad, Nor Fadhilah |
| author_facet | Ahamad, Nor Fadhilah |
| author_sort | Ahamad, Nor Fadhilah |
| building | USM Institutional Repository |
| collection | Online Access |
| description | The aim of this study was to compare the CT number between the
conventional Cone Beam Computed Tomography (CBCT) and ImaSim simulation
software. The CT numbers in CBCT were performed by using CIRS 062 M electron
density phantoms with four types of tissue equivalent plug density phantoms
ranging from 0 g/cm3 to 1.61 g/cm3 based on the common tissues in the oral cavity.
The CT numbers of tissue equivalent density plugs were of air, adipose, water and
bone were compared between CBCT and ImaSim software at 80 kVp and 10 mAs.
15 slices of CBCT images with slice thickness of approximately 1.0 mm are
obtained from central axis of phantom were selected to measure the average CT
number by drawing a region of interest (ROI) on every slice. The images of ImaSim
were obtained by simulation of CBCT at similar phantom set up and CBCT
exposure factors. The measurement of chi-square 'goodness of fit' was used to
determine the closeness of CT numbers among theoretical, Planmeca Romexis
CBCT and ImaSim. The results showed that the x2 values of CT numbers of
theoretical value against Planmeca Romexis CBCT were between 0.651 and 5.206
while the x2 values of theoretical value against lmasim CBCT was between 3.738
and 42.201. However, the range of x2 for Planmeca Romexis CBCT vs lmaSim
CBCT was between 1.877 and 58.887. In conclusion, the high density tissues such
as bone gave the highest degree of closeness of CT numbers between Planmeca
Romexis CBCT and lmaSim. Therefore, low density tissues are best applied in
ImaSim CBCT simulation. |
| first_indexed | 2025-11-15T18:55:59Z |
| format | Monograph |
| id | usm-57944 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T18:55:59Z |
| publishDate | 2015 |
| publisher | Pusat Pengajian Sains Kesihatan, Universiti Sains Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-579442023-04-12T04:46:55Z http://eprints.usm.my/57944/ Comparison of CT number between conventional CBCT and imasim software Ahamad, Nor Fadhilah QA75-76.95 Calculating Machines The aim of this study was to compare the CT number between the conventional Cone Beam Computed Tomography (CBCT) and ImaSim simulation software. The CT numbers in CBCT were performed by using CIRS 062 M electron density phantoms with four types of tissue equivalent plug density phantoms ranging from 0 g/cm3 to 1.61 g/cm3 based on the common tissues in the oral cavity. The CT numbers of tissue equivalent density plugs were of air, adipose, water and bone were compared between CBCT and ImaSim software at 80 kVp and 10 mAs. 15 slices of CBCT images with slice thickness of approximately 1.0 mm are obtained from central axis of phantom were selected to measure the average CT number by drawing a region of interest (ROI) on every slice. The images of ImaSim were obtained by simulation of CBCT at similar phantom set up and CBCT exposure factors. The measurement of chi-square 'goodness of fit' was used to determine the closeness of CT numbers among theoretical, Planmeca Romexis CBCT and ImaSim. The results showed that the x2 values of CT numbers of theoretical value against Planmeca Romexis CBCT were between 0.651 and 5.206 while the x2 values of theoretical value against lmasim CBCT was between 3.738 and 42.201. However, the range of x2 for Planmeca Romexis CBCT vs lmaSim CBCT was between 1.877 and 58.887. In conclusion, the high density tissues such as bone gave the highest degree of closeness of CT numbers between Planmeca Romexis CBCT and lmaSim. Therefore, low density tissues are best applied in ImaSim CBCT simulation. Pusat Pengajian Sains Kesihatan, Universiti Sains Malaysia 2015 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/57944/1/NOR%20FADHILAH%20BINTI%20AHAMAD-24%20PAGES.pdf Ahamad, Nor Fadhilah (2015) Comparison of CT number between conventional CBCT and imasim software. Project Report. Pusat Pengajian Sains Kesihatan, Universiti Sains Malaysia. (Submitted) |
| spellingShingle | QA75-76.95 Calculating Machines Ahamad, Nor Fadhilah Comparison of CT number between conventional CBCT and imasim software |
| title | Comparison of CT number between conventional CBCT and imasim software |
| title_full | Comparison of CT number between conventional CBCT and imasim software |
| title_fullStr | Comparison of CT number between conventional CBCT and imasim software |
| title_full_unstemmed | Comparison of CT number between conventional CBCT and imasim software |
| title_short | Comparison of CT number between conventional CBCT and imasim software |
| title_sort | comparison of ct number between conventional cbct and imasim software |
| topic | QA75-76.95 Calculating Machines |
| url | http://eprints.usm.my/57944/ http://eprints.usm.my/57944/1/NOR%20FADHILAH%20BINTI%20AHAMAD-24%20PAGES.pdf |