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Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
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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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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.
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Imaging Studies for Cardiovascular System III: X-Ray01:20

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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...

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In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
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Published on: February 16, 2016

在放射性核素成像上,中等风险的运动心电图患者的长期结局,这些患者没有心肌 perfusion 缺陷.

R J Gibbons1, D O Hodge, D S Berman

  • 1Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, Rochester, MN 55905, USA. gibbons.raymond@mayo.edu

Circulation
|November 26, 1999
PubMed
概括

具有中等风险跑步机分数和正常心肌输液成像的患者未来心脏事件的风险较低. 对这些人来说,医疗管理是安全的,避免不必要的再血管化程序.

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科学领域:

  • 心脏病学 心脏病学
  • 核心脏病学 核心脏病学
  • 诊断成像 诊断成像 诊断成像

背景情况:

  • 中等风险杜克跑步机分数的管理没有标准化.
  • 风险分层对于指导这些患者的治疗决策至关重要.

研究的目的:

  • 评估中等风险跑步机得分和正常心肌输液成像的患者心血管事件的长期风险.
  • 为这一患者群建立适当的管理策略.

主要方法:

  • 从核心脏病数据库对4649名患者的回顾性分析.
  • 纳入标准:中等风险跑步机得分 (-10至4),正常/近正常 perfusion 成像 (-201或-99m sestamibi),没有先前的再血管.
  • 95%的随访对心血管的结果.

主要成果:

  • 高7年生存率:总体99.8%,96.6%没有心肌梗塞,87.1%没有心肌梗塞或再血管.
  • 接近正常的扫描和心脏扩大是心脏死亡的预测因素.
  • 7年心脏存活率为正常心脏大小的97.0%,但心脏扩大时更低 (89.0%).

结论:

  • 患有中等风险跑步机分数和正常 perfusion 影像/心脏大小的患者风险较低,可以通过医疗来管理.
  • 对心脏扩大患者的治疗需要临床判断.
  • 正常的心肌 perfusion 影像支持在被选中的患者保守的医疗管理.