![Measuring the Spin-Lattice Relaxation Magnetic Field Dependence of Hyperpolarized [1-13C]pyruvate](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59399.jpg&w=3840&q=50)
翻译超极化[C,N]尿素MRI用于人类新型脑输液研究
Yaewon Kim1, Hsin-Yu Chen1, Tanner Nickles1
1Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA USA.
Npj imaging
|March 24, 2025
概括
研究人员为分子成像开发了无菌,超极化[C,N]尿素. 这种新型探测器成功地可视化了健康的大脑志愿者的血液流动,证明了广泛临床应用的潜力.
科学领域:
- 医疗成像医学成像
- 生物化学 生物化学
- 核医学是一种核医学.
背景情况:
- 分子成像探针对于非侵入性生理评估至关重要.
- 超极化剂为代谢和 perfusion 成像提供了增强的信号.
- 尿素是一种内源性,惰性分子,有可能用于安全的体内应用.
研究的目的:
- 开发一种新的方法来生产无菌的,超极化的[C,N2]尿素.
- 在健康人脑志愿者研究中评估该探针的安全性和有效性.
- 评估超极化[13C,15N2]尿素在 perfusion 成像中的潜力.
主要方法:
- 开发一种新的生产方法,用于无菌,超极化[C,N,N2]尿素.
- 达到高度 (132 ± 6毫米) 和极化 (27.4 ± 5.6%) 的T1为50.4 ± 0.2秒.
- 在健康的大脑志愿者身上进行了高分辨率C成像,以捕捉血液流动.
主要成果:
- 成功地生产了超极化的[C,N,N2]尿素,具有优异的成像参数.
- 高分辨率C成像可视化了大脑中详细的血管结构.
- 在所有受试者中观察到一致的动脉和静脉信号模式,验证了探针的实用性.
结论:
- 超极化[13C,15N2]尿素是一种有前途的新型分子成像探针,用于输液评估.
- 该探测器在初始健康大脑志愿者研究中证明了安全性和有效性.
- 潜在的应用扩展到各种器官,癌症微环境和功能,为临床翻译铺平了道路.
![Investigating Cardiac Metabolism in the Isolated Perfused Mouse Heart with Hyperpolarized [1-13C]Pyruvate and 13C/31P NMR Spectroscopy](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F63188.jpg&w=3840&q=50)
相关概念视频
01:24Magnetic Resonance Imaging
5.0K
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
5.0K
01:15Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
274
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
274