追逐目标的上眼对称公式;R2,RMSE,POC,MAE和MSE
Kubra Serefoglu Cabuk1, Said Kemal Cengiz2, Mehmet Guray Guler3
1Department of Ophthalmology, University of Health Sciences Basaksehir Cam and Sakura City Hospital, Istanbul, Turkey. drqubra@gmail.com.
International ophthalmology
|July 2, 2024
概括
确定系数 (R2) 是客观评估上眼轮对称性的最可靠的数学公式,与外科医生的评估有很强的相关性. 这个指标是这个指标.
科学领域:
- 眼科和眼科整形手术.
- 生物医学工程 生物医学工程
- 医学成像分析 医学成像分析
背景情况:
- 在眼膜外科手术中,评估上眼轮对称度至关重要.
- 外科医生的主观评分可能不一致.
- 需要客观的数学方法来进行可靠的对称性评估.
研究的目的:
- 确定最合适的数学公式,客观量化上眼轮对称性.
- 为了比较客观的数学评估与眼科外科医生的主观评分.
主要方法:
- 贝济埃曲线是从31名患者62只眼睛的上眼轮生成的.
- 计算了客观对称度量,包括R2 (确定系数),RMSE (根-平均-平方误差),MSE (平均平方误差),POC (协效率百分比) 和MAE (平均绝对误差).
- 斯皮尔曼的rho相关性被用来比较客观指标与主观对称度等级从三个眼科外科医生 (高级,专家,初级).
主要成果:
- 所有测试的数学公式都显示出与主观外科医生评分的相关性.
- 确定系数 (R2) 与所有外科医生经验水平的主观评估的相关性最强.
- 随着外科医生经验的增加,相关性强度下降,高级外科医生与R2.2的相关性最高.
结论:
- 数学公式,特别是R2,可以客观而可靠地表达上眼轮对称性.
- 这些客观措施与眼科外科医生的评估相提并论.
- R2显示了对评估眼对称性的专家临床判断的最高一致性.
相关概念视频
Accessory Structures of the Eye
1.5K
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
1.5K
Parallel-axis Theorem
6.5K
The parallel-axis theorem provides a convenient and quick method of finding the moment of inertia of an object about an axis parallel to the axis passing through its center of mass. Consider a thin rod as an example. There is a striking similarity between the process of finding the moment of inertia of a thin rod about an axis through its middle, where the center of mass lies, and about an axis through its end using the conventional method. In the conventional method, the concept of linear mass...
6.5K
Perpendicular-Axis Theorem
2.8K
The perpendicular-axis theorem states that the moment of inertia of a planar object about an axis perpendicular to its plane is equal to the sum of the moments of inertia about two mutually perpendicular concurrent axes lying in the plane of the body.
Consider a circular disc of mass M and radius R lying along an x-y plane. The origin lies at the center of the disc, and the z-axis is perpendicular to the disc's plane. All three axes coincide at the disc's center. The moment of inertia of this...
Consider a circular disc of mass M and radius R lying along an x-y plane. The origin lies at the center of the disc, and the z-axis is perpendicular to the disc's plane. All three axes coincide at the disc's center. The moment of inertia of this...
2.8K
Two-Dimensional Force System: Problem Solving
564
Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
564
Eccentric Axial Loading in a Plane of Symmetry
177
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
177
Unsymmetric Bending - Angle of Neutral Axis
296
Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...
296


