重建皮质脊柱管的体形组织仍然是现代导管学方法的一项挑战
Jianzhong He1, Fan Zhang2,3, Yiang Pan1
1Institution of Information Processing and Automation, Zhejiang University of Technology, Hangzhou, China.
Human brain mapping
|October 4, 2023
概括
使用扩散核磁共振成像来重建皮质脊髓管 (CST) 和其体质组织仍然具有挑战性. 虽然一些方法显示出希望,但偏见和不完整的覆盖仍然存在,突出了需要改进技术的需要.
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 生物医学工程 生物医学工程
背景情况:
- 皮质脊髓管 (CST) 对于自愿运动至关重要.
- CST表现出体形组织,身体部位按顺序映射.
- 扩散核磁共振扫描用于研究CST解剖学,但面临着挑战.
研究的目的:
- 为了比较六种曲谱学方法用于重建CST及其体形的性能.
- 为了评估重建速度,简化分布,以及白质-灰质接口覆盖范围.
- 在不同的方法中评估体形图谱绘制的准确性.
主要方法:
- 他们比较了六种曲谱学方法:CSD (iFOD1,SD-Stream),UKF (UKF1T,UKF2T),GQI和Tracts.
- 通过将其分为腿部,干部,手部和面部的分支来研究CST体型.
- 使用了来自100名人类结合体项目的扩散MRI数据进行定量和视觉比较.
主要成果:
- UKF2T显示了最高的重建率和皮质覆盖率.
- 所有方法都显示出产生过度干线的偏差.
- 在所有方法中,面部区域的WM-GM接口覆盖率一般较低 (<40%).
- 关于流线分布与皮质体积的相互矛盾的结果表明,体内体型重建存在挑战.
结论:
- 目前的轨道图法方法在全面重建CST方面存在局限性,特别是其侧向和中向投影.
- 准确地重建CST体型仍然是扩散MRI的一个重大挑战.
- 对于可靠的CST重建和体内图形绘制,需要进一步的进展.
更多相关视频
16:23Fiber Connections of the Supplementary Motor Area Revisited: Methodology of Fiber Dissection, DTI, and Three Dimensional Documentation
Published on: May 23, 2017
11.3K
11:06Bilateral Assessment of the Corticospinal Pathways of the Ankle Muscles Using Navigated Transcranial Magnetic Stimulation
Published on: February 19, 2019
8.6K
相关概念视频
01:16Spinal Cord: Cross-sectional Anatomy
2.0K
The cross-sectional anatomy of the spinal cord offers a detailed view of its complex structure and function within the central nervous system. At the core of the spinal cord lies the gray matter, characterized by its butterfly or "H"-shaped appearance in cross-section. This central region is enveloped by white matter, with the overall structure divided into symmetrical halves by the dorsal median sulcus and the ventral median fissure.
Gray Matter and its Components
Central to the gray matter is...
Gray Matter and its Components
Central to the gray matter is...
2.0K
01:11Direct Motor Pathways
2.1K
The direct motor pathways, also known as the pyramidal tracts, are a group of neural pathways that originate in the brain and descend through the spinal cord. They control the voluntary movement of the body. There are two major direct motor pathways: the corticospinal and the corticobulbar tracts.
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and...
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and...
2.1K
01:22Indirect Motor Pathways
1.5K
The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
1.5K
01:33Somatosensation
36.7K
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
36.7K