Invasive imaging technologies: can we reconcile light and sound?
1Department of Interventional Cardiology, Thoraxcenter, Erasmus, Rotterdam, The Netherlands. e.regar@erasmusmc.nl
Journal of Cardiovascular Medicine (Hagerstown, Md.)
|June 29, 2011
Summary
Fractional flow reserve and intravascular ultrasound (IVUS) are standard for assessing coronary lesions. New devices combine IVUS with near-infrared spectroscopy (NIR) for advanced plaque diagnosis, improving clinical practice.
Area of Science:
- Cardiovascular medicine
- Medical imaging
- Interventional cardiology
Background:
- Fractional flow reserve (FFR) and intravascular ultrasound (IVUS) are established tools for assessing coronary artery lesions.
- Current imaging technologies like IVUS, optical coherence tomography (OCT), and near-infrared (NIR) spectroscopy offer complementary information on plaque characteristics.
- There is a clinical need for integrated, real-time plaque assessment to optimize treatment and patient outcomes.
Purpose of the Study:
- To review the advancements in intravascular imaging and diagnostic tools for coronary artery disease.
- To discuss the capabilities and limitations of different plaque detection technologies, including IVUS, OCT, and NIR spectroscopy.
- To explore the potential of a combined NIR spectroscopy and IVUS catheter for advanced coronary plaque diagnosis.
Main Methods:
- Review of current intravascular imaging modalities (IVUS, OCT, NIR spectroscopy) and their applications.
- Discussion of the principles, advantages, and limitations of light-based (OCT, NIR) versus sound-based (IVUS) imaging.
- Introduction of a novel combined NIR spectroscopy and IVUS catheter system.
Main Results:
- Different imaging technologies provide unique insights: OCT offers high resolution, NIR spectroscopy excels in plaque component detection, and IVUS provides superior tissue penetration.
- A combined NIR spectroscopy and IVUS catheter enables co-registered data acquisition during a single pullback.
- This integrated approach has the potential for fast, accurate, and reliable coronary plaque diagnosis.
Conclusions:
- Intravascular imaging has evolved significantly, offering detailed plaque characterization beyond traditional methods.
- Combined imaging technologies, such as NIR spectroscopy and IVUS, promise to enhance diagnostic capabilities in the catheterization laboratory.
- These advancements are expected to improve current clinical practice and future therapeutic strategies for atherosclerosis.
Related Concept Videos
01:17Ultrasonography
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...
During an ultrasonography procedure, a handheld device called a...
01:28Three-Dimensional Microscopy in Microbiology
Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
01:24Imaging 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...
01:24X-ray Imaging
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...