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相关概念视频

Computed Tomography01:10

Computed Tomography

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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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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Ultrasound I: Abdominal Ultrasonography01:20

Ultrasound I: Abdominal Ultrasonography

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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...
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相关实验视频

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螺旋编码的全波形逆向式超声波计算机断层扫描.

Chenchen Zhou1,2, Guoao Ma1,2, Ying Li1,2

  • 1Department of Biomedical Engineering, Fudan University, Shanghai, 200438, China.

The Journal of the Acoustical Society of America
|April 8, 2025
PubMed
概括
此摘要是机器生成的。

全波形逆转 (FWI) 的新旋编码策略显著降低了肌肉骨超声计算断层扫描 (UCT) 的计算负载. 这种方法可以加速成像,同时提高图像质量和精度.

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科学领域:

  • 医疗成像医学成像
  • 生物医学工程 生物医学工程
  • 声学 声学 在声学方面

背景情况:

  • 肌肉骨超声波成像带来了重大挑战.
  • 全波形逆转 (FWI) 提供高分辨率超声波计算断层扫描 (UCT),但在计算上是密集的.
  • 在FWI中大量的源导致大量的计算负担.

研究的目的:

  • 开发一种源编码技术,以尽量减少肌肉骨FWI中的波场计算.
  • 为了提高FWI性能,引入一种新的旋编码策略.
  • 为了加速肌肉骨UCT,同时保持高成像质量.

主要方法:

  • 开发了一种旋编码策略,并使用UCT配置中的环形数组应用于FWI.
  • 声的直角性质被利用来缓解交叉通话器件.
  • 编码全波形反转 (VE-FWI) 与传统的FWI和其他编码策略进行了比较.

主要成果:

  • 与传统的FWI相比,VE-FWI将计算负载降低了数量级.
  • 图像质量得到了提高,峰值信号与噪音比率增加了2.9%.
  • 与传统编码策略相比,结构相似性指数的度量增加了4.7%.

结论:

  • 线编码显著加速肌肉骨UCT.
  • VE-FWI保持高图像质量,提供精度和计算效率.
  • 这种技术为实际的肌肉骨成像应用提供了一个有前途的解决方案.