在辐射高热应用中的电场测量
Marco Di Cristofano1, Luca Lalli1, Giorgia Paglialunga1
1Department of Information Engineering, Electronic and Telecommunications, University of Rome La Sapienza, Via Eudossiana 18, 00184 Rome, Italy.
Sensors (Basel, Switzerland)
|July 30, 2025
概括
这项研究开发了用于瘤高温 (HT) 装置的新型E场传感器. 传感器准确地测量电磁场分布和偏振,这对于验证HT系统性能至关重要.
科学领域:
- 生物医学工程 生物医学工程
- 电磁学 电磁学 电磁学 电磁学
- 医学物理 医学物理
背景情况:
- 瘤性高温症 (HT) 使用电磁场 (EM) 提高癌症治疗效率.
- 精确测量电磁场分布和偏振对于HT系统验证至关重要.
- 现有的电子场探测器面临着HT设备的高功率水平带来的挑战.
研究的目的:
- 开发和验证一种新的电子场传感器,用于测量瘤高温器件 (HT) 中的电磁场分布和极化.
- 为了评估传感器在高功率水平和典型的HT频率范围内的性能.
- 用开发的传感器来评估商业的HT系统.
主要方法:
- 设计和数值分析一个新型的E-Field传感器与三个直角探头 (双极,二极管,高阻抗传输线).
- 针对高频频率 (60-150MHz,434MHz,915MHz) 和功率水平 (高达2000W) 的传感器设计的优化.
- 通过测量来自商业HT系统的电磁场来制造和实验验证传感器.
主要成果:
- 开发的E-Field传感器准确地测量了HT设备中的电磁场分布和偏振.
- 数字模拟证实了传感器在相关的HT频率和功率范围内可操作.
- 在商用HT系统上的测量表明了线性偏振,这表明单个探头可能足以进行现场表征.
结论:
- 这种新型的E场传感器适用于瘤高温应用器辐射的电磁场的特征.
- 传感器测量极化的能力支持HT系统的评估和验证.
- 研究结果表明,单个探头可能足以在这些设备中进行完整的现场表征.
更多相关视频
09:01Magnetic-, Acoustic-, and Optical-Triple-Responsive Microbubbles for Magnetic Hyperthermia and Pothotothermal Combination Cancer Therapy
Published on: May 22, 2020
3.2K
08:52Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere
Published on: April 30, 2018
8.3K
相关概念视频
01:05Absorption of Radiation
822
The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
822
01:27Induced Electric Fields: Applications
1.9K
An important distinction exists between the electric field induced by a changing magnetic field and the electrostatic field produced by a fixed charge distribution. Specifically, the induced electric field is nonconservative because it does not work in moving a charge over a closed path. In contrast, the electrostatic field is conservative and does no net work over a closed path. Hence, electric potential can be associated with the electrostatic field but not the induced field. The following...
1.9K
01:13Equipments Used to Measure Body Temperature
1.2K
Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
1.2K
01:14Assessing Body Temperature - Axilla
663
Procedural Guide for Assessing Axillary Body Temperature using a Digital Thermometer:
Step 1: Perform hand hygiene and put on clean gloves to maintain infection control and prevent cross-contamination.
Step 2: Prepare the patient by explaining the procedure to ensure understanding and cooperation. Ensure privacy, expose the axilla, and inform the patient that minimal movement is crucial for an accurate reading.
Step 3: Adjust the patient’s clothing to expose only the axilla. It minimizes...
Step 1: Perform hand hygiene and put on clean gloves to maintain infection control and prevent cross-contamination.
Step 2: Prepare the patient by explaining the procedure to ensure understanding and cooperation. Ensure privacy, expose the axilla, and inform the patient that minimal movement is crucial for an accurate reading.
Step 3: Adjust the patient’s clothing to expose only the axilla. It minimizes...
663
01:23Induced Electric Fields
3.9K
The fact that emfs are induced in circuits implies that work is being done on the conduction electrons in the wires. What can possibly be the source of this work? We know that it’s neither a battery nor a magnetic field, as a battery does not have to be present in a circuit where current is induced, and magnetic fields never do any work on moving charges. The source of the work is in fact an electric field that is induced in the wires. For example, if a stationary conductor is placed in a...
3.9K
01:14Temperature Measurement Sites
2.2K
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
2.2K