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相关概念视频

Computed Tomography01:10

Computed Tomography

4.4K
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...
4.4K
Positron Emission Tomography01:29

Positron Emission Tomography

4.1K
Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
4.1K
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

209
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...
209
Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

99
Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
99
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

89
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
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Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
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Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans

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儿科法医死后计算机断层扫描:从基本到高级的基础知识.

Sharon W Gould1, Mary Harty2

  • 1Radiology Department, Nemours Children's Health DE, 1600 Rockland Road, Wilmington, DE, 19803, USA. sgould@nemours.org.

Pediatric radiology
|August 9, 2024
PubMed
概括

死后计算机断层扫描 (CT) 需要不同的技术,而不是标准的CT扫描. 调整曝光和使用先进的后处理可以提高对法医调查中微妙发现的成像效果.

科学领域:

  • 法医放射学 法医放射学
  • 医疗成像医学成像
  • 放射技术 放射技术 放射技术

背景情况:

  • 死亡后的计算机断层扫描 (CT) 成像协议与活着的患者使用的显著不同.
  • 标准的诊断CT协议未被优化为死后成像,需要调整暴露参数.
  • 儿科患者的辐射剂量减少方案不适合死后CT.

研究的目的:

  • 概述执行死后CT扫描的基本技术.
  • 讨论死后CT的先进扫描和后处理方法.
  • 突出 CT 参数中必要的修改,以实现有效的死后成像.

主要方法:

  • 改变暴露参数以消除噪音和光束硬化等人工物.
  • 优化组织对比度,以改善死后组织的可视化.
  • 使用多个扫描序列和先进的后处理技术.
  • 使用与活患者或儿科剂量减少不同的专用协议.

主要成果:

  • 修改后的暴露参数有效地减少了人造物质,并在死后CT中增强了组织对比度.
  • 先进的后处理技术提高了微妙发现的检测.
  • 尸后CT可以详细可视化结构,如内集合和非移位骨折.
关键词:
计算机断层扫描 (CT) 是一种计算机断层扫描.法医医学法医学的研究.儿科 儿科 儿科在死后进行尸检.

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Analysis of Craniomaxillofacial Malformations in Mice Using Three-dimensional Microcomputed Tomography

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相关实验视频

Last Updated: Jun 17, 2025

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
12:32

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans

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Whole-body PET/MRI of Pediatric Patients: The Details That Matter
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Analysis of Craniomaxillofacial Malformations in Mice Using Three-dimensional Microcomputed Tomography

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结论:

  • 与活人CT诊断相比,死后CT需要专门的技术和参数调整.
  • 优化扫描和后处理对于准确解释死后CT发现至关重要.
  • 这些技术有助于在法医案件中识别微妙的病理证据.