放射学协议的自动预测使用检索增强代增强代.
Conrad Testagrose1, Panagiotis Korfiatis2, Justin Benfield2
1Center for Augmented Intelligence in Imaging, Mayo Clinic, Jacksonville, FL, 32224, USA. Testagrose.Conrad@mayo.edu.
Journal of imaging informatics in medicine
|March 17, 2026
概括
大型语言模型 (LLM) 显示了自动化放射性协议选择的前景. 检索增强生成 (RAG) 在某些站点提高了准确性,但需要特定站点的调以获得最佳性能.
科学领域:
- 放射学中的人工智能
- 临床决策支持系统 临床决策支持系统
- 医疗信息学 医疗信息学
背景情况:
- 放射学协议的选择是复杂的,耗时的,容易出现错误.
- 自动化方法面临着诸如阶级不平衡和特定地点的变化等挑战.
- 大型语言模型 (LLM) 提供了提高协议选择效率的潜力.
研究的目的:
- 评估LLM在大规模放射性协议选择中的有效性.
- 为了比较检索增强生成 (RAG) 与直接微调的协议选择.
- 评估RAG对不同临床场所的准确性,弃权率和适应能力的影响.
主要方法:
- 经过培训的特定站点的Llama 3.2 3B LLMs使用三个梅奥诊所站点的患者报告.
- 通过整合分区范围的FAISS索引来实现RAG的上下文证据.
- 微调非RAG和RAG增强模型的性能比较,使用宏和加权F1分数.
主要成果:
- 无论是RAG还是非RAG模型,在各个地点都表现出强的基线性能.
- 在亚利桑那州和佛罗里达州,RAG显著改善了宏观F1,但在罗切斯特没有.
- 在大多数地点,RAG引入了一个可解释的弃权机制,基线率较低 (1-2.5%).
结论:
- LLM,特别是RAG,可以支持可靠的放射性协议大规模选择.
- 在不同站点上,RAG的有效性是异质的,需要特定站点的调整.
- RAG的可适应的检索索引和弃权机制为临床工作流集成提供了运营优势.
相关概念视频
01:06Nuclear Overhauser Enhancement (NOE)
Irradiation of a spin-active nucleus causes an increase or decrease in the signal intensity of neighboring nuclei that are not necessarily chemically bonded or involved in J-coupling. This phenomenon, called the nuclear Overhauser enhancement (NOE), results from through-space interactions between the nuclear spins. The NOE effect decreases with increasing internuclear distance and is generally not observed beyond 4 angstroms. In NOE, dipole-dipole interactions between neighboring spin-active...
01:25Atomic Absorption Spectroscopy: Interference
Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
01:30Atomic Emission Spectroscopy: Interference
In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
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.
01:29Atomic Fluorescence Spectroscopy
Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which are...
01:12Double Resonance Techniques: Overview
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
Spin decoupling is usually achieved by...