Effect of Segmentation Techniques (Manual Versus Semiautomatic) on the Accuracy of the Reconstructed Mandibular Condyle Using CBCT(A Diagnostic Accuracy Study)
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 29
- 试验地点
- 1
- 主要终点
- Linear assessment of the condyles
研究概览
简要总结
Effect of Segmentation Techniques (Manual versus Semiautomatic) on the Accuracy of the Reconstructed Mandibular Condyle using CBCT
详细描述
It will be used to segment the mandibular condyle and asses its volumetric and linear measurements. Therefore, the accuracy of the segmentation techniques of the mandibular condyle will be determined
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Diagnostic
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Intact dry human skulls and mandibles.
排除标准
- •Presence of fracture, pathological lesions, or skeletal deformities in the condylar area.
研究组 & 干预措施
Manual segmentation technique of CBCT images of the condyles.
Using the manual edition built in tool, first a brush of small size will be used to demarcate the outline of the condyle in the sagittal cuts. Then shading the demarcated condylar area with a brush of larger size in each slice. The outline of the condyle will be refined on all cuts. The software built in tool 'create surface' will be used to create the segmented 3D volume
干预措施: CBCT radiation (Radiation)
Semiautomatic segmentation technique of CBCT images of the condyles.
Using the water shed built in tool, first a brush of small size will be used to demarcate the outline of the condyle by the 'background' option in all planes. Then using the 'foreground' option, a brush of larger size will be used to shade the condylar area. The software built in tool 'expand water shed' will be used to include the whole condyle. At last, 'create surface' option will be used to create the segmented 3D volume.
干预措施: CBCT radiation (Radiation)
Actual physical measurements of the condyles on the dry mandibles
For linear measurements, actual physical measurements will be done on the dry mandibular condyles, using digital caliper, as mentioned before.
For volumetric measurements, water displacement technique will be used. The mandibular condyle will be immersed in a graduated beaker containing water till the level of the glued gutta percha. The volume of the displaced water will be measured and will represent the actual volume of the condyle
结局指标
主要结局
Linear assessment of the condyles
时间窗: one month
Linear measurements will be calculated in millimeters by Built-in measuring tool (ruler) in the software + digital caliper on the dry mandibles
次要结局
- Volumetric assessment of the condyles(one month)
研究者
Enas El Saket
principle investigator
Cairo University