- Library Home /
- Search Collections /
- Open Collections /
- Browse Collections /
- UBC Theses and Dissertations /
- Effect of stent marker materials on the localization...
Open Collections
UBC Theses and Dissertations
UBC Theses and Dissertations
Effect of stent marker materials on the localization of cross-sectional images using spiral tomography Orpe, Elaine
Abstract
With the increase in endosseous dental implant placement there is an increasing demand for cross-sectional imaging of the jaws to facilitate treatment planning of the patient. While there are many articles recommending different types of marker materials in guide stents to be used for this imaging, no quantitative comparisons of the efficacy of such materials have been published. The purpose of this study was to compare different types of marker materials for radiographic guide stents for conventional spiral tomography. Differences in the ability of observers to localize cross-sectional images relative to longitudinal images with the different types of markers were determined. Radiographic guide stents for dried human mandibles and one metatarsal bone were fabricated to accept acrylic cylinders with different marker materials in the same relative position. These were imaged using conventional spiral tomography and observers were asked to localize the cross-sectional images on corresponding longitudinal images using the markers as guides. A pilot study confirmed that there were statistically significant differences in the mean absolute error of slice localization by observers for different marker materials. The pilot study also confirmed that any type of marker resulted in much less mean absolute error in slice localization than use of no marker. The definitive study found statistically significant differences in mean error for slice localization not only for different types of markers, but also for the location of the tomographic slice and for the stents made for different bones.
Item Metadata
Title |
Effect of stent marker materials on the localization of cross-sectional images using spiral tomography
|
Creator | |
Publisher |
University of British Columbia
|
Date Issued |
2005
|
Description |
With the increase in endosseous dental implant placement there is an increasing
demand for cross-sectional imaging of the jaws to facilitate treatment planning
of the patient. While there are many articles recommending different types of
marker materials in guide stents to be used for this imaging, no quantitative
comparisons of the efficacy of such materials have been published.
The purpose of this study was to compare different types of marker materials
for radiographic guide stents for conventional spiral tomography. Differences
in the ability of observers to localize cross-sectional images relative to
longitudinal images with the different types of markers were determined.
Radiographic guide stents for dried human mandibles and one metatarsal bone
were fabricated to accept acrylic cylinders with different marker materials in the
same relative position. These were imaged using conventional spiral
tomography and observers were asked to localize the cross-sectional images on
corresponding longitudinal images using the markers as guides.
A pilot study confirmed that there were statistically significant differences in
the mean absolute error of slice localization by observers for different marker
materials. The pilot study also confirmed that any type of marker resulted in
much less mean absolute error in slice localization than use of no marker.
The definitive study found statistically significant differences in mean error for
slice localization not only for different types of markers, but also for the
location of the tomographic slice and for the stents made for different bones.
|
Genre | |
Type | |
Language |
eng
|
Date Available |
2009-12-15
|
Provider |
Vancouver : University of British Columbia Library
|
Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
|
DOI |
10.14288/1.0092136
|
URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
|
Graduation Date |
2005-11
|
Campus | |
Scholarly Level |
Graduate
|
Aggregated Source Repository |
DSpace
|
Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.