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相关概念视频

Ultrasonography01:17

Ultrasonography

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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...
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Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

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Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
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Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

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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...
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Upsampling01:22

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Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...
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相关实验视频

Updated: Jan 16, 2026

Real-time Monitoring of High Intensity Focused Ultrasound HIFU Ablation of In Vitro Canine Livers Using Harmonic Motion Imaging for Focused Ultrasound HMIFU
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超声波数据的插入技术.

Georgios Sarris1, Michael J S Lowe1, Peter Huthwaite1

  • 1Department of Mechanical Engineering, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, United Kingdom.

Ultrasonics
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PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的方法,使用插值与有限元 (FE) 建模来快速生成现实的超声波数据. 这种方法显著降低了计算成本,克服了机器学习和非破坏性评估 (NDE) 数据可用性的局限性.

关键词:
在 FE 建模中使用 FE 建模.在体内生成数据.插值 插值 插值 插值 插值 插值经验不详的资格 NDE 资格.

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相关实验视频

Last Updated: Jan 16, 2026

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科学领域:

  • 声学和超声波的研究.
  • 计算力学 计算力学 计算力学
  • 数据科学数据科学数据科学

背景情况:

  • 有限的实验超声波数据阻碍了诊断应用的充分利用.
  • 通过有限元 (FE) 建模生成足够的数据在计算上是昂贵的.
  • 这种数据稀缺性影响非破坏性评估 (NDE) 方法资格和机器学习算法培训.

研究的目的:

  • 开发一种计算效率高的方法来生成大规模的超声波数据集.
  • 为了增加稀缺的实验超声波数据,使用插值技术与FE建模相结合.
  • 验证拟议数据生成方法的准确性和适用性.

主要方法:

  • 使用插值技术与先前存在的有限元素 (FE) 模型结合使用.
  • 开发并展示了快速超声波数据生成的方法,而不需要解决额外的FE模型.
  • 通过四个越来越复杂的示例案验证了方法.

主要成果:

  • 插值方法成功生成了与完全FE建模可比的超声波数据.
  • 建议方法的结果通常在预期值的1%以内.
  • 数据生成是以传统FE建模的计算成本的一小部分实现的.

结论:

  • 拟议的方法提供了一个计算效率高的解决方案,用于生成现实的超声波数据.
  • 这种技术可以显著提高机器学习和NDE应用程序的数据可用性.
  • 该方法已被验证用于各种物理设置和信号复杂性,具有广泛的适用性.