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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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Imaging Studies for Cardiovascular System V: CT01:28

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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

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

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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

Acute Kidney Injury IV: Diagnostic Studies and Prevention

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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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Imaging Studies for Cardiovascular System IV: CMRI01:21

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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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Latest Evidence on Intravascular Imaging: A Literature Review.

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

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

Journal of Clinical Medicine
|July 12, 2025
PubMed
Summary
This summary is machine-generated.

Intravascular imaging (IVI) improves percutaneous coronary intervention (PCI) outcomes for complex lesions. Optical coherence tomography (OCT) and intravascular ultrasound (IVUS) guide PCI, enhancing stent placement and reducing adverse events.

Keywords:
complex coronary lesionsintravascular imagingintravascular ultrasoundoptical coherence tomographypercutaneous coronary interventionstent optimization

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Area of Science:

  • Cardiology
  • Medical Imaging
  • Interventional Cardiology

Background:

  • Conventional angiography has limitations in visualizing complex coronary anatomy.
  • Intravascular imaging (IVI) modalities like IVUS and OCT offer enhanced visualization during PCI.
  • Recent evidence from trials and meta-analyses since 2022 provides updated insights.

Purpose of the Study:

  • To synthesize the latest evidence on the comparative efficacy of IVI modalities in complex coronary lesions.
  • To assess the impact of IVI-guided PCI on procedural outcomes and clinical endpoints.
  • To evaluate the current guideline recommendations for IVI use in PCI.

Main Methods:

  • Literature review of randomized trials and meta-analyses published since 2022.
  • Focus on studies comparing IVI-guided PCI versus conventional angiography.
  • Analysis of data from landmark trials including RENOVATE-COMPLEX PCI, ILUMIEN IV, OCTOBER, and OCTIVUS.

Main Results:

  • IVI-guided PCI significantly improves procedural success, stent optimization, and clinical outcomes (target-vessel failure, MI, stent thrombosis).
  • Optical coherence tomography (OCT) shows particular benefit in bifurcation and left main interventions.
  • Intravascular ultrasound (IVUS) consistently improves outcomes in long lesions and complex anatomies.

Conclusions:

  • Pooled analyses and substudies support routine IVI use in anatomically complex PCI cases.
  • Updated guidelines recommend IVI as a Class I indication for select patients.
  • Broader clinical adoption and training in IVI techniques are necessary to improve PCI outcomes.