Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Computed Tomography01:10

Computed Tomography

4.3K
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...
4.3K
X-ray Imaging01:24

X-ray Imaging

5.4K
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...
5.4K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Development and Implementation of a Machine Learning Model for Prediction of Surgical Case Duration.

Joint Commission journal on quality and patient safety·2026
Same author

Contralateral Breast Background Parenchymal Enhancement: A Physiologic Marker, not a Predictor of ER Status.

Current medical imaging·2026
Same author

Current validation practice undermines surgical AI development.

ArXiv·2026
Same author

Quantification of Imaging Suite-Level Energy Patterns in MRI, CT, and PET/CT to Guide Energy Efficiency.

Radiology·2026
Same author

Assessing variations in 3D image quality in chest CT across sites and scanners.

Medical physics·2026
Same author

Clinical Feasibility Studies and Potential Applications of Cone-Beam Computed Tomography Integrated in Multimodality X-Ray System for Small Animals.

Animals : an open access journal from MDPI·2026

相关实验视频

Updated: Jun 11, 2025

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
08:30

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

14.4K

一个多个X射线源阵列 (MXA) 系统,具有平面二维源分布,用于数字乳腺图解合成.

Alejandro Sisniega1, Andrew M Hernandez2, Shadi A Shakeri2

  • 1Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, USA.

Medical physics
|October 9, 2024
PubMed
概括
此摘要是机器生成的。

与1D系统相比,二维 (2D) 多个X射线源阵列 (MXA) 通过减少杂乱和增强对比细节检测来显著提高数字乳腺图像合成 (DBT) 图像质量.

关键词:
乳房成像检查 乳房成像检查静止式X射线是一种静止式X射线.图莫合成 (tomosynthesis) 是一种体内合成的方法.

更多相关视频

Tracking the Mammary Architectural Features and Detecting Breast Cancer with Magnetic Resonance Diffusion Tensor Imaging
15:48

Tracking the Mammary Architectural Features and Detecting Breast Cancer with Magnetic Resonance Diffusion Tensor Imaging

Published on: December 15, 2014

22.4K
A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space
14:19

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space

Published on: February 1, 2016

8.5K

相关实验视频

Last Updated: Jun 11, 2025

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
08:30

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

14.4K
Tracking the Mammary Architectural Features and Detecting Breast Cancer with Magnetic Resonance Diffusion Tensor Imaging
15:48

Tracking the Mammary Architectural Features and Detecting Breast Cancer with Magnetic Resonance Diffusion Tensor Imaging

Published on: December 15, 2014

22.4K
A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space
14:19

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space

Published on: February 1, 2016

8.5K

科学领域:

  • 医学成像物理 医学成像物理
  • 辐射技术 辐射技术
  • 生物医学工程 生物医学工程

背景情况:

  • 数字乳房图解合成 (DBT) 面临图像质量的局限性,原因是低采样,源运动和患者运动.
  • 当前的DBT系统使用一维 (1D) 扫描几何,阻碍了最佳图像重建.

研究的目的:

  • 提出和评估一种新的热电正极X射线系统,采用二维 (2D) 多个X射线源阵列 (MXA),以提高DBT图像质量.
  • 解决现有DBT系统的技术局限性.

主要方法:

  • 一个具有11个焦点的1D MXA被用来模拟一个2D MXA,通过将探测器直角转换.
  • 使用幻影评估图像质量,评估对比度和噪声比率 (CNR),背景杂乱和切片灵敏度概况 (SSP).
  • DBT重建使用过后投影,并对体积数据进行加权平均.

主要成果:

  • 2D MXA显著降低了背景杂乱噪声 (5.9 AU). 对于 1D 和 5.0 A.U. 的比较. 对于2D,p<0.001) 的情况.
  • 与1D MXA相比,2D MXA系统在所有对比度-细节组合中显示出优异的CNR.
  • 2D MXA消除了在1D系统中观察到的富里埃域零圆,并将SSP缩小了15%至50%

结论:

  • 2D MXA 几何在传统的 1D DBT 系统上提供了显著的优势.
  • 改进归因于增强的福里埃域采样和减少SSP.
  • 2D MXA 源对于推进 DBT 成像技术具有巨大的潜力.