STIS:一种新的方法来标准化菌拉曼光谱中的光谱仪器
Hailong Feng1, Mingyue Huang1, Jing Liang1
1College of Artificial Intelligence, Nankai University, Tianjin 300350, China.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|January 23, 2026
概括
一种新的方法,仪器标准化 (STIS) 的光谱变压器,通过单细胞拉曼光谱来改善真菌感染诊断. STIS在各种仪器中标准化了光谱数据,提高了侵入性真菌感染的诊断准确度.
科学领域:
- 频谱学是一种光谱学.
- 医学诊断 医学诊断 医学诊断
- 计算生物学 计算生物学
背景情况:
- 侵袭性真菌感染每年导致超过150万人的死亡,需要快速诊断.
- 单细胞拉曼光谱技术提供了灵敏的,无标签的检测,但受到仪器间的光谱变化的影响.
- 当前的标准化方法,如DS和PDS与复杂的仪器偏差作斗争.
研究的目的:
- 引入一种用于仪器标准化 (STIS) 的新型光谱变压器,以解决拉曼光谱学中的光谱不一致问题.
- 为了在不同仪器上实现准确可靠的真菌诊断.
- 改善单细胞拉曼光谱的临床翻译.
主要方法:
- 开发STIS使用全球自我注意机制和光谱位置嵌入.
- 建模了全范围的光谱依赖性,以捕捉复杂的仪器偏差,而无需过拟合.
- 从47种临床真菌菌株的拉曼光谱上评估STIS.
主要成果:
- STIS显著优于现有方法,实现了0.9897的平均相关性,并将转移误差降低到5.13%.
- 只有10个标准化样本可以实现一致的跨设备光谱对齐.
- 通过STIS校准的光谱导致识别准确率达到95.74% (SVM) 和97.87% (CNN),比未校准的数据提高了30%以上.
结论:
- STIS有效地规范了单细胞拉曼光谱的光谱数据,克服了传统方法的局限性.
- 开发的方法提高了真菌感染的诊断准确度,为改进的临床应用铺平了道路.
- STIS表现出强大的性能和效率,需要最小的标准化样本来进行可靠的跨设备校准.
相关概念视频
01:26Raman Spectroscopy Instrumentation: Overview
1.1K
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
1.1K
01:20Raman Spectroscopy: Overview
1.5K
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
1.5K
01:22Atomic Absorption Spectroscopy: Instrumentation
1.6K
An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...
The atomizer used in AAS can be either a flame atomizer or an...
1.6K
01:22Atomic Emission Spectroscopy: Instrumentation
1.2K
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
1.2K
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
692
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
692
01:23Instrument Transformers
457
Instrument transformers, comprising voltage transformers (VTs) and current transformers (CTs), play crucial roles in power substations by providing isolated replicas of current or voltage for measurement and protection purposes. Voltage transformers reduce the primary voltage to levels suitable for relay operation and measurement, while current transformers scale down the primary current. The primary winding of a current transformer often consists of a single turn, achieved by threading the...
457