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

9.2K
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...
9.2K
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

1.4K
Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
1.4K
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

511
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...
511
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

460
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...
460
X-ray Imaging01:24

X-ray Imaging

10.8K
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...
10.8K
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

1.0K
Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
1.0K

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

Cardiac magnetic resonance findings in two cases of hypertrophic cardiomyopathy with <i>MYH7</i> and <i>MYBPC3</i> variants: Limitations of genotype-based phenotypic prediction.

Journal of cardiology cases·2026
Same author

Right Atrial Function as a Novel Predictor for New-Onset Atrial Fibrillation in Transthyretin Amyloid Cardiomyopathy.

Journal of the American Heart Association·2026
Same author

Image Quality Advancements in Low-Dose Pediatric CT Using Super-Resolution Deep-Learning Reconstruction.

Journal of imaging informatics in medicine·2026
Same author

Image quality comparison between low-dose thin-slice deep-learning reconstruction and standard-dose thick-slice hybrid iterative reconstruction in pediatric abdominal CT.

European journal of radiology·2026
Same author

Does adding a delayed phase to cardiac computed tomography for coronary artery evaluation have prognostic value?

European heart journal. Cardiovascular Imaging·2026
Same author

The usefulness of catheter ablation even in patients with myocardial impairment: Myocardial extracellular volume assessed by preablation planning computed tomography cannot predict atrial fibrillation recurrence.

Heart rhythm O2·2026

相关实验视频

Updated: Mar 6, 2026

Dynamic Contrast Enhanced Magnetic Resonance Imaging of an Orthotopic Pancreatic Cancer Mouse Model
06:24

Dynamic Contrast Enhanced Magnetic Resonance Imaging of an Orthotopic Pancreatic Cancer Mouse Model

Published on: April 18, 2015

15.8K

在对比增强腹部计算机断层扫描中准确估计辐射剂量的对比特异特异转换因子.

Yoshinori Funama1, Daisuke Sakabe2, Takeshi Nakaura3

  • 1Department of Medical Image Analysis, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan.

Journal of clinical imaging science
|March 5, 2026
PubMed
概括

本研究引入了对比特异转换因子 (cCF),以改善对比增强CT (CECT) 扫描中的辐射剂量估计. 使用CECT和非增强CT (NECT) 之间的器官剂量比计算cCF可以提高准确性.

关键词:
与对比度增强的计算机断层扫描.对比特异的特定转换因子.非增强型计算机断层扫描.辐射剂量估计辐射剂量估计

更多相关视频

Irradiator Commissioning and Dosimetry for Assessment of LQ &#945; and &#946; Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
06:20

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Published on: March 11, 2021

7.8K
Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement
06:33

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement

Published on: July 29, 2013

11.7K

相关实验视频

Last Updated: Mar 6, 2026

Dynamic Contrast Enhanced Magnetic Resonance Imaging of an Orthotopic Pancreatic Cancer Mouse Model
06:24

Dynamic Contrast Enhanced Magnetic Resonance Imaging of an Orthotopic Pancreatic Cancer Mouse Model

Published on: April 18, 2015

15.8K
Irradiator Commissioning and Dosimetry for Assessment of LQ &#945; and &#946; Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
06:20

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Published on: March 11, 2021

7.8K
Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement
06:33

Construction of a Preclinical Multimodality Phantom Using Tissue-mimicking Materials for Quality Assurance in Tumor Size Measurement

Published on: July 29, 2013

11.7K

科学领域:

  • 医疗成像医学成像
  • 放射学 放射学是指放射学
  • 辐射剂量计 辐射剂量计

背景情况:

  • 在计算机断层扫描 (CT) 中精确估计辐射剂量至关重要,特别是在对比增强检查中.
  • 非增强CT (NECT) 和对比增强CT (CECT) 涉及不同的辐射剂量.
  • 改善CECT的剂量评估对于患者的安全和诊断准确性至关重要.

研究的目的:

  • 确定腹部CT的对比特异转换因子 (cCF).
  • 建立一种方法,以便在CECT中更准确地估计辐射剂量.
  • 用器官剂量比来量化NECT和CECT之间的剂量差异.

主要方法:

  • 这项研究涉及33名接受NECT和CECT治疗的成年患者.
  • 蒙特卡洛模拟用于估计NECT和CET的器官剂量 (肝脏,脏,脏).
  • 对比特异的转换因子 (cCF) 被计算为CECT器官剂量与NECT器官剂量的比.

主要成果:

  • 平均器官剂量从NECT增加到CECT:肝脏 (10.45至15.83mGy),脏 (11.19至17.56mGy) 和脏 (11.47至20.75mGy).
  • 计算出的平均cCF值为肝脏的1.52,脏的1.83和脏的1.87.
  • cCF值表现出对扫描协议,CT供应商和X射线光子能量的依赖.

结论:

  • 对比特异转换因子 (cCF) 提供了一个更准确的方法,用于在CECT中评估辐射剂量.
  • 将cCF应用于基于NECT的剂量估计,可以改善在对比度增强CT检查期间对辐射暴露的评估.
  • 这种方法有助于优化腹部CT成像中的辐射安全协议.