相关实验视频
Updated: Jul 15, 2025
05:05
Four-Dimensional CT Analysis Using Sequential 3D-3D Registration
Published on: November 23, 2019
8.0K
整个膝关节的映射使用一个阶段调节的UTE增血T (PM-UTE-AdiabT) 序列
Yajun Ma1, Michael Carl2, Qingbo Tang1,3
1Department of Radiology, University of California, San Diego, San Diego, California, USA.
Magnetic resonance in medicine
|September 27, 2023
概括
一个新的3D阶段调节的UTE增生T1ρ (PM-UTE-AdiabT1ρ) 序列使整个膝关节关节的映射成为可能. 这种先进的MRI技术为各种膝盖组织提供了准确的T1ρ测量,提高了诊断能力.
科学领域:
- 生物医学工程 生物医学工程
- 磁共振成像是一种磁共振成像技术.
- 肌肉骨成像系统的成像
背景情况:
- T1ρ (在旋转框架中的纵向放松时间) MRI对组织组成敏感.
- 由于组织和运动的复杂性,准确地绘制膝关节关节的T1ρ图是具有挑战性的.
研究的目的:
- 开发和验证一种新型的3D相调节的UTE基T1ρ (PM-UTE-AdiabT1ρ) 序列.
- 为了在临床3T扫描仪上实现全膝关节体积T1ρ映射.
主要方法:
- 该PM-UTE-AdiabT1ρ序列包括磁化重置,亚亚电脉冲,相调节,脂肪和,可变翻转角度和3DUTE圆收购.
- 使用简单的指数拟合进行了T1ρ量化.
- 幻影研究评估了灵敏度,可重复性和与连续波T1ρ.的相关性.
- 该序列应用于ex vivo和in vivo正常的膝盖.
主要成果:
- 幻影研究显示对组合变化的高灵敏度,优异的可重复性和与连续波T1ρ的强烈相关性.
- 在体内获得的T1ρ值为股骨软骨 (77.9 ± 3.9 ms),阴囊 (30.1 ± 2.2 ms),ACL (52.0 ± 3.1 ms),PCL (29.2 ± 2.4 ms),软骨肌 (17.0 ± 1.8 ms) 和肌肉 (57.6 ± 2.8 ms).
结论:
- 开发的3DPM-UTE-AdiabT1ρ序列适合对膝关节的体积T1ρ评估.
- 这种技术可以在临床3T扫描仪上绘制膝盖内的短T2和长T2组织.
相关概念视频
01:23Knee Joint
1.9K
The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
1.9K
01:10Computed Tomography
4.6K
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
4.6K