超声波测试的编码激发:一篇评论
Chenxin Weng1, Xu Gu1, Haoran Jin1
1The State Key Laboratory of Fluid Power and Mechatronic Systems, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China.
Sensors (Basel, Switzerland)
|April 13, 2024
概括
编码激发 (CE) 通过提高信号噪声比和效率来增强超声波测试. 这种方法克服了传统短脉冲的局限性,在各种应用中提供了更好的成像和更快的刷新率.
科学领域:
- 超声波测试 超声波测试 超声波测试
- 材料科学 材料科学 材料科学
- 医疗成像医学成像
- 工业非破坏性评估 工业非破坏性评估
背景情况:
- 超声波测试在医学和工业中至关重要,需要高信号噪声比 (SNR) 和高效率,以获得清晰的成像和快速刷新率.
- 超声波测试中的常规短脉冲激发在SNR和效率之间存在权衡,限制了性能.
- 编码激发 (CE) 通过增加脉冲持续时间提供了一个解决方案,可能在不牺牲效率的情况下改善SNR.
研究的目的:
- 在超声波测试中审查编码激发 (CE) 的基本原理和应用.
- 突出CE在克服传统方法中SNR效率权衡方面的潜力.
- 探索CE在各种超声波测试场景中的实用性.
主要方法:
- 对CE基本原理的审查:信号调制,传输,接收和脉冲压缩.
- 关于CE优化技术的讨论.
- 检查工业和医疗超声波测试中的CE应用.
主要成果:
- CE允许增加脉冲持续时间,增强SNR并保持高效率.
- 在工业大批量波探测 (单探头和分相阵列) 和引导波探测方面,CE显示出显著的潜力.
- CE也适用于医疗阶段阵列成像,提高性能.
结论:
- 编码激发提供了一种可行的策略,可以提高超声波测试中的信号噪声比和效率.
- CE提供了一条改善图像清晰度,检测深度和图像更新率的途径.
- 确定了超声波测试中CE的未来研究方向.
相关概念视频
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences
1.8K
A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
1.8K
Ultrasonography
6.5K
Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
During an ultrasonography procedure, a handheld device called...
6.5K
Ultrasound II: Endoscopic Ultrasound and FibroScan
1.3K
Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):
Endoscopic Ultrasound (EUS):
1.3K
Ultrasound I: Abdominal Ultrasonography
3.5K
Introduction:
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
3.5K
Imaging Studies II: Ultrasonography
909
IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
909


