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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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X-ray Imaging01:24

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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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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Updated: Jul 1, 2025

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数字乳房图莫合成:技术和常见的工件

Yi-Chen Lai1,2, Kimberly M Ray3, James G Mainprize4

  • 1National Yang-Ming University, School of Medicine, Taipei, Taiwan.

Journal of breast imaging
|March 1, 2024
PubMed
概括

优化数字乳腺断片合成 (DBT) 需要平衡图像质量和扫描时间. 代重建算法可以减少DBT成像固有的文物,提高诊断准确度.

关键词:
文物 文物 文物数字乳腺图片合成解释中的陷 陷乳房学 乳房学 乳房学

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科学领域:

  • 医疗成像医学成像
  • 放射学 放射学是一门学科.
  • 生物医学工程 生物医学工程

背景情况:

  • 数字乳腺图像合成 (DBT) 图像优化在成像变量之间存在复杂的权衡.
  • 更宽的扫描角度提高了组织分离,但降低了平面内分辨率,增加了扫描时间,冒着患者运动的风险.
  • 扫描时间缩短技术,如连续管运动和像素分区,可以引入运动,但可能会降低分辨率.

研究的目的:

  • 探索数字乳腺图片合成图像优化的固有挑战.
  • 评估各种成像参数对图像质量和扫描效率的影响.
  • 调查代重建算法在缓解DBT文物中的作用.

主要方法:

  • 在DBT中分析扫描角度,平面内分辨率和扫描时间之间的权衡.
  • 评估用于缩短扫描时间的技术,包括连续管运动和像素分区.
  • 对DBT中人工物减少的代重建算法的评估.

主要成果:

  • 更宽的扫描角度提高了组织分离,以牺牲在平面内分辨率和增加扫描时间.
  • 缩短扫描时间的方法可能会损害平面内分辨率.
  • 代重建算法在减少常见的DBT文物方面表现出有效性.

结论:

  • DBT图像优化涉及平衡竞争因素,如组织分离,分辨率和扫描时间.
  • 代重建算法提供了一个有希望的方法来解决DBT中的图像文物.
  • 进一步研究优化DBT获取和重建参数对于改善诊断性能至关重要.