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相关概念视频

Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
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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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Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

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IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
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Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

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Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
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Imaging Studies for Cardiovascular System III: X-Ray01:20

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The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
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Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
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血管内成像的最新证据:文学综述

Rafail Koros1, Antonios Karanasos1,2, Michail I Papafaklis1,2

  • 1Cardiology Department, University Hospital of Patras, 26504 Patras, Greece.

Journal of clinical medicine
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概括

血管内成像 (IVI) 改善了复杂病变的皮肤冠状动脉干预 (PCI) 结果. 光学连贯断层扫描 (OCT) 和血管内超声波 (IVUS) 指导PCI,增强支架的放置和减少不良事件.

关键词:
复杂的冠状动脉病变复杂的冠状动脉病变.血管内成像 血管内成像静脉内超声波检查 静脉内超声波检查光学连贯性断层扫描 (optical coherence tomography) 是一种光学连贯性断层扫描技术.通过皮肤进行冠状动脉干预.支架优化 支架优化

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科学领域:

  • 心脏病学 心脏病学
  • 医疗成像医学成像
  • 干预心脏病学 干预心脏病学

背景情况:

  • 传统血管造影在可视化复杂的冠状动脉解剖学方面存在局限性.
  • 血管内成像 (IVI) 模式,如IVUS和OCT在PCI期间提供了增强的可视化.
  • 自2022年以来的试验和元分析的最新证据提供了最新的见解.

研究的目的:

  • 综合最新关于IVI模式在复杂冠状动脉病变中的比较疗效的证据.
  • 评估IVI引导的PCI对程序结果和临床终点的影响.
  • 评估目前关于在PCI中使用IVI的指导方针建议.

主要方法:

  • 自2022年以来发表的随机试验和元分析的文献综述.
  • 专注于比较IVI引导PCI与传统血管学研究.
  • 分析了包括RENOVATE-COMPLEX PCI,ILUMIEN IV,OCTOBER和OCTIVUS在内的里程碑性试验数据.

主要成果:

  • 以IVI为指导的PCI显著改善了手术成功,支架优化和临床结果 (目标血管衰竭,MI,支架血栓形成).
  • 光学连贯性断层扫描 (OCT) 在分叉和左主干预方面显示出特别的好处.
  • 血管内超声波 (IVUS) 持续改善了长病变和复杂解剖学的结果.

结论:

  • 聚合分析和替代研究支持在解剖学复杂的PCI病例中常规使用IVI.
  • 更新的指导方针建议IVI作为选择患者的I类指示.
  • 为了改善PCI结果,需要更广泛的临床采用和IVI技术培训.