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

7.6K
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...
7.6K
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

671
Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
671

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

Theoretical Study on Selective Isotope Substitution Boosting High-Performance Circularly Polarized Delayed Fluorescence (CP-TADF) for Planar-Chiral Emitters.

The journal of physical chemistry. A·2026
Same author

Performance of virtual unenhanced images on a prototype silicon photon counting detector CT: preliminary clinical results.

BMC biomedical engineering·2026
Same author

Reduced left atrial strain from 4-dimensional computed tomography predicts atrial fibrillation recurrence after ablation.

Heart rhythm·2025
Same author

Real-Time 3-D Video Reconstruction for Guidance of Transventricular Neurosurgery.

IEEE transactions on medical robotics and bionics·2025
Same author

Ultrahigh-resolution K-edge imaging for guidance of microrobots in minimally invasive interventions: A feasibility study.

Medical physics·2025
Same author

Liver fat quantification using deep silicon photon-counting CT: an <i>in silico</i> imaging study.

Radiology advances·2025

相关实验视频

Updated: Apr 30, 2026

Management of Respiratory Motion Artefacts in 18F-fluorodeoxyglucose Positron Emission Tomography using an Amplitude-Based Optimal Respiratory Gating Algorithm
06:53

Management of Respiratory Motion Artefacts in 18F-fluorodeoxyglucose Positron Emission Tomography using an Amplitude-Based Optimal Respiratory Gating Algorithm

Published on: July 23, 2020

5.6K

在原始数据域中使用噪声仿真进行功能性心脏CT成像的协议优化.

Zhye Yin1, Pengwei Wu2, Ashish Manohar3

  • 1GE HealthCare, Waukesha, Wisconsin, USA.

Medical physics
|May 16, 2024
PubMed
概括

这项研究引入了一种新的噪声仿真方法,用于低剂量四维 (4D) 心脏计算机断层扫描 (CT) 扫描. 这种技术优化了成像协议,以达到足够的图像质量,以尽可能低的辐射剂量进行心脏功能分析.

关键词:
功能性心脏CT CT 功能性心脏CT图像质量图像质量 图像质量低剂量仿真剂的低剂量仿真噪音注入的噪音注入

更多相关视频

High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals
11:09

High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals

Published on: December 16, 2022

3.7K
Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
05:32

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

256

相关实验视频

Last Updated: Apr 30, 2026

Management of Respiratory Motion Artefacts in 18F-fluorodeoxyglucose Positron Emission Tomography using an Amplitude-Based Optimal Respiratory Gating Algorithm
06:53

Management of Respiratory Motion Artefacts in 18F-fluorodeoxyglucose Positron Emission Tomography using an Amplitude-Based Optimal Respiratory Gating Algorithm

Published on: July 23, 2020

5.6K
High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals
11:09

High-Resolution Cardiac Positron Emission Tomography/Computed Tomography for Small Animals

Published on: December 16, 2022

3.7K
Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
05:32

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

256

科学领域:

  • 医疗成像医学成像
  • 放射学 放射学是一门学科.
  • 心血管成像 - 心血管成像

背景情况:

  • 四维 (4D) 广泛覆盖的计算机断层扫描 (CT) 对于评估心肌机械功能至关重要.
  • 在多次心跳中重复CT测量引起了对辐射暴露的担忧.

研究的目的:

  • 开发和验证投影域噪声仿真方法,从高剂量数据中生成精确的低剂量4D心脏CT扫描.
  • 为了使CT协议能够优化以达到最低合理可实现的剂量 (ALARA),同时保持功能性心脏分析的诊断图像质量.

主要方法:

  • 开发了一种噪声仿真技术,将现实的量子和电子噪声注入高剂量投影数据中.
  • 引入了一个空间变化的,取决于频道的探测器增强校准方法,以提高仿真精度.
  • 建议使用投影域图像质量 (IQ) 度量来根据探测器响应确定ALARA剂量值.

主要成果:

  • 低剂量模拟图像在噪声大小 (CNR在2%以内),工件和纹理方面与真实低剂量扫描密切匹配,用于幻影和临床数据.
  • 取决于频道的探测器获得了改进的仿真精度.
  • 提出的智商指标有助于计算患者特定的低剂量4D心脏CT的最佳kVp和mA设置.

结论:

  • 建立了一种可靠的方法来估计基于原始数据的低剂量CT仿真的系统依赖参数.
  • 仿真方法成功地重现了现实的噪声特征,文物和纹理.
  • 这种方法允许对功能性心脏CT成像进行患者特定的最低剂量方案的前性选择.