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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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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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时间域近红外光学断层扫描利用全时间数据:一个模拟研究

Letizia Lanini1,2, Alexander Kalyanov3, Meret Ackermann3

  • 1Department of Physics, ETH Zürich, Zürich, Switzerland. laninil@student.ethz.ch.

Advances in experimental medicine and biology
|October 16, 2023
PubMed
概括

时间域近红外光学断层扫描 (TD NIROT) 中的完整时间数据提供了卓越的3D图像重建,特别是在深层组织中. 然而,噪音显著影响性能,需要消除噪音的发展.

关键词:
图像质量 图像质量图像重建 图像重建时间域近红外光学断层扫描近红外光学断层扫描

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科学领域:

  • 生物医学光学 生物医学光学
  • 医学成像医学成像
  • 组织的光学特性 组织的光学特性

背景情况:

  • 时间域近红外光学断层扫描 (TD NIROT) 提供高分辨率的组织属性分析.
  • 从TD NIROT处理大型数据集以进行3D图像重建具有挑战.
  • 与频域 (FD) 和时间时刻方法的比较对于评估DT数据实用性至关重要.

研究的目的:

  • 利用TD NIROT的全部时间数据来改进3D图像的重建.
  • 为了比较TD基于数据的重建与FD和时间瞬间方法的性能.
  • 评估噪声对TD数据重建准确性的影响.

主要方法:

  • 开发和评估了使用全时间TD NIROT数据的代3D图像重建算法.
  • 在无噪声和有噪声条件下模拟的in-silico数据.
  • 将重建结果与从频域 (FD) 数据和时间时刻分析中获得的结果进行比较.

主要成果:

  • 无噪声模拟显示出优越的图像质量与完整的时间数据,特别是在更深的包含 (≥20毫米).
  • 在与测量数据相似的噪声存在时,完全的时间数据没有超过FD数据或时间时刻.
  • 重建质量在TD数据中与噪声显著降低.

结论:

  • 完整的时间数据本身包含了TD NIROT更丰富的信息.
  • 使用完整的时间数据可以实现更好的图像质量,特别是在无噪声的场景中.
  • 对TD NIROT数据开发有效的无效化技术对于实际应用至关重要.