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Related Concept Videos

Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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

Imaging Studies I: CT and MRI

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...
Ultrasonography01:17

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called a...
Imaging Studies I: Kidney, Ureter, and Bladder Studies01:28

Imaging Studies I: Kidney, Ureter, and Bladder Studies

Kidney, Ureter, and Bladder (KUB) StudiesKidney, Ureter, and Bladder (KUB) studies are standard diagnostic imaging procedures used to assess the anatomy of the urinary system. They are commonly utilized for patients experiencing abdominal pain or urinary symptoms. By using a simple X-ray of the abdomen, KUB studies can reveal structural and pathological abnormalities within the kidneys, ureters, and bladder. These studies are particularly valuable in diagnosing kidney stones, urinary...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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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Contrast Enhanced Vessel Imaging using MicroCT
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IVUS-based imaging modalities for tissue characterization: similarities and differences.

Hector M Garcìa-Garcìa1, Bill D Gogas, Patrick W Serruys

  • 1Department of Interventional Cardiology, Thoraxcenter, Erasmus University Medical Center, Room BA-571, Dr Molewaterplein 40, 3015 GD Rotterdam, The Netherlands.

The International Journal of Cardiovascular Imaging
|February 18, 2011
PubMed
Summary
This summary is machine-generated.

Intravascular ultrasound (IVUS) is crucial for assessing coronary artery disease and evaluating new therapies. However, its gray-scale imaging limits plaque characterization, which is improved by advanced post-processing techniques like virtual histology IVUS.

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Area of Science:

  • Cardiovascular Imaging
  • Medical Device Technology
  • Interventional Cardiology

Background:

  • Gray-scale intravascular ultrasound (IVUS) is the gold standard for in vivo coronary artery imaging.
  • IVUS is vital for quantitative assessment of coronary artery disease and evaluating interventional therapies.
  • Current IVUS resolution and gray-scale imaging limit qualitative plaque morphology assessment compared to histopathology.

Purpose of the Study:

  • To highlight the limitations of traditional gray-scale IVUS in plaque characterization.
  • To introduce innovative IVUS-based post-processing methods that enhance plaque analysis.
  • To underscore the importance of advanced imaging techniques in cardiology.

Main Methods:

  • Review of gray-scale intravascular ultrasound (IVUS) capabilities and limitations.
  • Discussion of novel IVUS post-processing techniques: virtual histology IVUS (VH-IVUS), iMAP-IVUS, Integrated Backscatter IVUS (IB-IVUS), and Automated Differential Echogenicity (ADE).

Main Results:

  • Gray-scale IVUS provides quantitative assessment but struggles with qualitative plaque morphology identification.
  • Advanced post-processing methods partially overcome the limitations of traditional IVUS.
  • These innovative techniques aim to provide more detailed plaque characterization, approaching histopathology standards.

Conclusions:

  • Gray-scale IVUS, while a standard, has inherent limitations in plaque visualization.
  • Innovative IVUS post-processing methods significantly improve the ability to characterize coronary plaque components.
  • These advancements are crucial for accurate diagnosis and evaluation of cardiovascular interventions.