可适应的级联注册,用于个性化部完成和裂缺陷体积估计.
Yungeng Zhang1,2, Yuru Pei1, Yixiao Guo1
1Key Laboratory of Machine Perception (MOE), Department of Machine Intelligence, School of Intelligence Science and Technology, Peking University, Beijing, China.
Medical physics
|March 31, 2024
概括
这项研究引入了一种新的深度注册框架,用于自动完成口唇裂和 palatal (CLP) 患者的部缺陷,使用形光束计算机断层扫描 (CBCT) 扫描. 该方法准确地预测了裂缺陷体积,减少了人工注释工作.
科学领域:
- 医疗成像医学成像
- 计算机辅助手术 计算机辅助手术
- 生物医学工程 生物医学工程
背景情况:
- 圆束计算机断层扫描 (CBCT) 为唇裂患者提供了详细的面洞察力.
- 对于二次膜骨移植的CBCT扫描的手动注释是昂贵和耗时的.
- 现有的注册方法与CLP缺陷的细粒度变化作斗争.
研究的目的:
- 为CLP CBCT设计和评估一种新的可变形部分注册方法.
- 为了实现个性化的部完成和准确的裂缺陷体积预测.
- 为了减少手动注释在CLP治疗计划中的负担.
主要方法:
- 提出了一个可适应的深度注册框架,利用级联的部分注册.
- 雇佣了上形态的先验和属性转移,以提高准确性.
- 开发了一种可适应的裂口缺陷掩盖和体积布尔运算符,用于缺陷填充.
- 利用B-spline变形进行数据增强,以创建一个合成数据集.
主要成果:
- 在部完成 (Dice 0.90 ± 0.02) 和裂口缺陷体积预测 (Dice 0.84 ± 0.04) 中取得了最先进的性能.
- 证明了高精度,平均豪斯多夫距离为0.30 ± 0.08毫米,用于隙缺陷估计.
- 在具有挑战性的单边和双边CLP案件中,成功预测了与地面真相相一致的裂缺陷地图.
结论:
- 拟议的可适应的深度注册模型有助于患者特定的部完成.
- 可自动注释裂缺陷,显著减少手工工作.
- 为提高CLP治疗计划的效率和准确性提供了一个有希望的解决方案.
相关概念视频
Structural Classification of Joints
Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
A fibrous joint is where the adjacent bones are united by fibrous connective...
A fibrous joint is where the adjacent bones are united by fibrous connective...
Internal Loadings in Structural Members: Problem Solving
When designing or analyzing a structural member, it is important to consider the internal loadings developed within the member. These internal loadings include normal force, shear force, and bending moment. Engineers can ensure that the structural member can support the applied external forces by calculating these internal loadings.
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal loadings...
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal loadings...
Deformation of Member under Multiple Loadings
When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
Bending of Members Made of Several Materials
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
Types of Building Separation Joints
Building separation joints divide large or complex building structures into smaller, discrete units that can move independently. These joints are categorized into three types: volume-change joints, settlement joints, and seismic separation joints.
Volume-change joints address the effects of expansion and contraction due to temperature and moisture variations. They are strategically placed at discontinuities in a building's mass where cracking is most likely and are spaced about 150 to 200 feet...
Volume-change joints address the effects of expansion and contraction due to temperature and moisture variations. They are strategically placed at discontinuities in a building's mass where cracking is most likely and are spaced about 150 to 200 feet...
Design Example: Dimensioning of Concrete Masonry Construction
For the construction of a storeroom using concrete masonry units, it's essential to align the dimensions of the structure with the actual sizes of the blocks and the intended mortar joints. On the site in question, there's a stockpile of concrete masonry blocks with a nominal size of eight by eight by sixteen inches, which are to be used in the construction of the storeroom.
The site engineer has laid out a plan for the storeroom with external dimensions of twelve feet in length and eight feet...
The site engineer has laid out a plan for the storeroom with external dimensions of twelve feet in length and eight feet...


