相关实验视频

Updated: May 22, 2025

A Dual Tracer PET-MRI Protocol for the Quantitative Measure of Regional Brain Energy Substrates Uptake in the Rat

A Dual Tracer PET-MRI Protocol for the Quantitative Measure of Regional Brain Energy Substrates Uptake in the Rat

Published on: December 28, 2013

通过MALDI成像对大脑PET标记物的空间分布

Isabeau Vermeulen¹, Michiel Vandenbosch¹, Delphine Viot²

¹The Maastricht MultiModal Molecular Imaging Institute (M4i), Division of Imaging Mass Spectrometry, Maastricht University, Universiteitssingel 50, 6229 ER Maastricht, The Netherlands.

Journal of the American Society for Mass Spectrometry

|March 12, 2025

概括

质谱成像 (MSI) 提供了一种无放射性方法,用于评估位子发射断层扫描 (PET) 痕迹分布. 优化样品准备与洗步骤显著提高了在临床前研究中可追踪剂的检测.

科学领域:

药理学药理学是指药理学的学科.
分析化学分析化学
生物医学成像技术生物医学成像技术

背景情况:

定子发射断层扫描 (PET) 追踪器的开发传统上使用 autoradiography 进行组织分布分析.
自动放射学需要放射性化合物,这给安全和处置带来了挑战.
质谱成像 (MSI) 提供了一个具有可比空间分辨率的非放射性替代方案.

研究的目的:

优化一个质谱成像 (MSI) 样本准备协议,用于评估PET追踪剂候选人ex vivo.
用MSI评估不同矩阵和洗步骤对PET追踪器检测的影响.
建立一个定量MSI方法用于PET标记物分布分析.

主要方法:

优化MSI样本准备协议用于PET追踪器UCB-J和UCB2400.
在样品制备过程中包括洗步骤,以增强追踪信号.
用于构建量化校准曲线的组织同质物的准备.
用于MSI分析的不同矩阵的比较.

主要成果:

整合洗步骤显著提高了UCB-J和UCB2400PET标记器的检测信号.
优化的MSI协议最大限度地减少了离子抑制效应,提高了量化准确性.
MSI证明了 PET 标记剂分布的成本效益和有效评估的潜力.

结论:

MSI是一种可行的,非放射性替代品,用于评估PET标记物分布.
一个优化的MSI样品准备协议,包括洗步骤,增强可追踪信号和量化.
这种优化的MSI方法为临床前PET追踪剂评估提供了有价值的工具.

更多相关视频

Molecular Imaging of Human Brain Organoids Using Mass Spectrometry

Molecular Imaging of Human Brain Organoids Using Mass Spectrometry

Published on: September 27, 2024

MALDI-Mass Spectrometric Imaging for the Investigation of Metabolites in Medicago truncatula Root Nodules

MALDI-Mass Spectrometric Imaging for the Investigation of Metabolites in Medicago truncatula Root Nodules

Published on: March 5, 2014

相关概念视频

Positron Emission Tomography

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET