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Updated: Sep 14, 2025

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通过基于对比学习的编码有效压缩质谱图像

Piotr Radziński1, Jakub Skrajny1, Maurycy Moczulski1

  • 1Institute of Informatics, University of Warsaw, Stefana Banacha 2, Warsaw 02-097, Poland.

Analytical chemistry
|July 21, 2025
PubMed
概括

我们开发了一个新的对比学习算法来压缩质谱成像 (MSI) 数据. 这种方法显著减少了数据大小,同时保留了用于准确组织分析和细分的诊断信息.

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Mass Spectrometry: Complex Analysis01:21

Mass Spectrometry: Complex Analysis

Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
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An unknown compound can be established by identifying the molecular ion peak in the mass spectrum. The molecular ion peak is often weak or absent due to the predominance of fragmentation in high-energy electron beams. In such cases, a low-energy electron beam can be used to scan the spectrum to enhance the intensity of the molecular ion peak. Additionally, chemical ionization, field ionization, and desorption ionization spectra are used to obtain a relatively intense molecular ion peak.
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