相关实验视频
Updated: Feb 6, 2026

06:30
Protocol for Isolating the Mouse Circle of Willis
Published on: October 22, 2016
13.6K
来自MRA和CTA图像的威利斯圆的拓意识多类细分
Rachika E Hamadache1, Clara Lisazo1, Cansu Yalcin1
1Research Institute of Computer Vision and Robotics (VICOROB), University of Girona, Girona, Spain.
Computers in biology and medicine
|February 4, 2026
概括
这项研究提出了一个深度学习管道,用于在脑成像中对威利斯圆 (CoW) 血管进行准确,拓正确的细分. 该方法在MRA和CTA方面实现了高性能,有助于评估神经血管病理.
科学领域:
- 医疗成像医学成像
- 神经科学是一个神经科学.
- 人工智能的人工智能
背景情况:
- 威利斯圆 (CoW) 是一个关键的大脑动脉网络,对血液供应至关重要.
- 准确的Cow血管细分对于识别神经血管病理至关重要.
- 由于复杂的Cow解剖学,现有的方法在实现拓准确性方面面临挑战.
研究的目的:
- 开发一个强大的管道,用于Cow船只的多类细分.
- 为了确保MRA和CTA的拓正确性和细分精度.
- 为神经血管疾病的临床评估提供一个有价值的工具.
主要方法:
- 使用基于nnUNet模型的深度学习框架.
- 一个新的,没有培训的后处理块被整合到CoW特定的精炼中.
- 该框架在TopCoW 2024数据集 (MRA/CTA) 上进行了培训和验证,并在独立数据集上进行了评估.
主要成果:
- 在域内测试组中获得高平均子得分:MRA为0.90,CTA为0.88.
- 在域外数据上表现出强的性能 (0.81对于MRA).
- 中线子得分为MRA和CTA均达到0.99,表明极好的拓准确性.
结论:
- 拟议的管道有效地实现了Cow船只的精确和拓正确的多类细分.
- 该方法显示了最先进的性能,并在TopCoW 2024挑战中获得了很高的排名.
- 这种公开可用的方法有助于进一步研究神经血管成像和分析.
相关概念视频
Self-Awareness and Its Effects
316
Self-awareness is a psychological state in which the individual becomes the focal point of their attention. This inward focus transforms the self into an object of contemplation and assessment, influencing how individuals perceive their actions and their alignment with personal and societal standards.Triggers and Contexts for Self-AwarenessSelf-awareness can be activated by external stimuli that make individuals visually or audibly aware of themselves, such as mirrors, cameras, or recordings.
316
Altered States of Awareness
1.1K
Altered states of consciousness represent significant deviations from one's normal mental state. These deviations can range from subtle changes in awareness to profound transformations in perception, thought processes, and sensory experiences. Altered states of consciousness can be triggered by various factors, including drug use, meditation, hypnosis, illness, or even intense fatigue.
The ingestion of substances like stimulants or hallucinogens leads to chemical alterations in the brain...
The ingestion of substances like stimulants or hallucinogens leads to chemical alterations in the brain...
1.1K
Subconsciousness and No Awareness
713
The concept of subconscious awareness refers to the processing of information below the level of conscious thought, which significantly influences both behaviors and decisions. It is also known as waking subconscious awareness. This complex level of cognition operates without the direct awareness of the individual, facilitating rapid and simultaneous handling of multiple information streams.
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
713
Circles
246
A circle in the coordinate plane is defined as the set of all points that lie at a constant distance, known as the radius, from a fixed point called the center. This relationship is captured using the distance formula. For a point (x, y) on the circle and a center (h, k), the distance between them equals the radius r. By squaring both sides of the distance formula, the equation of the circle is written in standard form:Constructing the Equation from Geometric InformationIf the center and the...
246
High-Level and Low-Level Awareness
779
Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
779
Mohr's Circle for Moments of Inertia: Problem Solving
3.2K
Mohr's circle is a graphical method for determining an area's principal moments by plotting the moments and product of inertia on a rectangular coordinate system. This circle can also be used to calculate the orientation of the principal axes.
Consider a rectangular beam. The moments of inertia of the beam about the x and y axis are 2.5(107) mm4 and 7.5(107) mm4, respectively. The product of inertia is 1.5(107) mm4. Determine the principal moments of inertia and the orientation of the major and...
Consider a rectangular beam. The moments of inertia of the beam about the x and y axis are 2.5(107) mm4 and 7.5(107) mm4, respectively. The product of inertia is 1.5(107) mm4. Determine the principal moments of inertia and the orientation of the major and...
3.2K

