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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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Imaging Studies III: Computed Tomography01:27

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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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Electron Microscope Tomography and Single-particle Reconstruction01:07

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
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Microfocus X-ray CT microCT Imaging of Actinia equina Cnidaria, Harmothoe sp. Annelida, and Xenoturbella japonica Xenacoelomorpha
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为结构复杂的生物体优化计算机断层扫描 (CT):胃足动物特征的案例研究

Andreza Caroline Caiero1, Marilia Nagata Ragagnin1, Cláudio Campi de Castro2

  • 1Biological Oceanography Department, Oceanographic Institute University of São Paulo São Paulo Brazil.

Ecology and evolution
|December 22, 2025
PubMed
概括

一种优化的计算机断层扫描 (OCT) 协议提供了一种可靠的,非破坏性的方法来估计类体积,这对于隐士生态研究至关重要. 这种新的OCT方法在各种贝类型中提供了与传统技术相提并论的准确测量.

关键词:
人工制品的艺术品.隐士是一种隐士.图像技术是一种成像技术.贝 贝 贝 贝 贝 是一个断层扫描 (Tomography) 是一个专业的技术.

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科学领域:

  • 生态生态学 生态生态学
  • 动物学 动物学
  • 生物技术是生物技术.

背景情况:

  • 胃足类的体积对隐士生态至关重要,影响的选择和资源竞争.
  • 传统的贝体积估计方法 (水/沙位移) 是破坏性的,耗时的.
  • 计算机断层扫描 (CT) 提供了一个非破坏性的替代方案,但为了准确的体积评估,需要优化.

研究的目的:

  • 开发和验证一个优化的计算机断层扫描 (OCT) 协议,用于估计内胃贝体积.
  • 通过传统的水/沙位移方法和非优化CT协议 (NOCT) 来比较来自OCT的体积.
  • 为了评估不同的软件 (CT Viewer与OsiriX MD) 的性能,用于CT数据分析.

主要方法:

  • 使用CT扫描分析了不同物种,大小和结构的胃类动物.
  • 优化CT协议 (OCT) 的体积估计与NOCT和水/沙位移方法进行了比较.
  • 软件性能 (CT 查看器和 OsiriX MD) 被评估为准确性和可重复性.

主要成果:

  • 海外国家和地区提供了与NOCT可比的高尖和表面高度的体积估计.
  • 对于低和中尖的贝,国外和海外的产量更高,与填充沙子的结果一致.
  • 在大多数物种中,OsiriX MD表现出高精度和可重复性,与OCT相美.
  • 贝大小影响了体积估计的变化,更大的高尖贝显示出更大的变化.

结论:

  • 优化计算机断层扫描 (OCT) 协议是一种可靠且非破坏性的方法,用于在生态研究中估计甲体积.
  • 虽然OCT是广泛适用的,但NOCT协议对于具有复杂装饰或高尖结构的贝可能更有效.
  • 软件选择,如OsiriX MD,可以影响基于CT的体积分析的准确性和可重现性.