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Super-resolution Fluorescence Microscopy

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...

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相关实验视频

Updated: Jan 9, 2026

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Published on: December 18, 2016

多参数和转移MR指纹使用罗塞特加速读出.

Sultan Z Mahmud¹, Hye-Young Heo¹

¹Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.

NMR in biomedicine

|December 9, 2025

概括

这项研究引入了一种快速,多参数的MRI方法,可以同时测量多种组织特性,如水含量和髓. 这种新的技术为潜在的疾病诊断提供了高效的大脑成像.

科学领域:

生物医学成像技术生物医学成像技术
量化MRI是指数量化的MRI.
磁共振指纹指纹磁共振指纹

背景情况:

传统的定量MRI方法单独测量组织参数,这对于临床应用来说是低效的.
磁共振指纹 (MRF) 能够同时获得多种组织特性,提高效率.

研究的目的:

开发和验证一种新型的多参数MRF框架,用于同时定量测量散水,磁化转移 (MT),髓水分 (MWF),B0不均质 (ΔB0) 和敏感度加权成像 (SWI) 对比.
在MRF框架内整合化学交换和转移 (CEST) 图像对比度.

主要方法:

开发了一种强大的运动,状加速的MRF序列,包括RF和和T2准备模块.
优化了MRF获取参数和从健康志愿者获得的数据在3T.
从MRF信号演变中估计了定量组织参数,并将它们与传统的独立序列进行了比较.

主要成果:

多参数罗塞特-MRF技术与散装水,MT,MWF,SWI和 ΔB0.0 的参考参数取得了很好的一致性.
在白质中与灰质相比,观察到更高的MWF和半固体宏分子池大小比率.
使用布洛赫方程和MRF衍生参数合成的多分子对比图像 (MTC,APT,rNOE,CEST).

关键词:

在CEST中,CEST是CEST.在MR指纹采集.在MTC中,MTC是MTC.在MWF中,MWF是MWF.这就是SWI SWI.

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Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

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Correlative Optical Spectroscopy and Mass Spectrometry Imaging Methodology to Visualise Drug Distribution in a Soft Tissue Section

Correlative Optical Spectroscopy and Mass Spectrometry Imaging Methodology to Visualise Drug Distribution in a Soft Tissue Section

Published on: June 20, 2025

相关实验视频

Last Updated: Jan 9, 2026

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Published on: December 18, 2016

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Registered Bioimaging of Nanomaterials for Diagnostic and Therapeutic Monitoring

Published on: December 9, 2010

Correlative Optical Spectroscopy and Mass Spectrometry Imaging Methodology to Visualise Drug Distribution in a Soft Tissue Section

Correlative Optical Spectroscopy and Mass Spectrometry Imaging Methodology to Visualise Drug Distribution in a Soft Tissue Section

Published on: June 20, 2025

结论:

开发的多参数MRF技术能够有效地同时测量各种MRI生物标志物.
这种方法有可能对疾病病理学和MRI生物标志物的临床评估产生有价值的见解.
合成MRI分析与MRF相结合,为快速,全面的脑成像提供了一个强大的工具.