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Two-dimensional intravascular ultrasound: technical development and initial clinical experience
P G Yock1, D T Linker, B A Angelsen
1Department of Medicine and Cardiovascular Research Institute, University of California, San Francisco.
Summary
This review covers catheter-based intravascular ultrasound imaging, detailing technical challenges and comparing design approaches. It examines early data correlating ultrasound images with histology and angiography, discussing future clinical uses.
Area of Science:
- Medical Imaging
- Cardiovascular Technology
- Biomedical Engineering
Background:
- Intravascular ultrasound (IVUS) imaging is a developing technology for visualizing blood vessels from within.
- Technical challenges exist in designing effective catheter-based imaging systems.
Purpose of the Study:
- To review the development and current status of catheter-based intravascular ultrasound imaging.
- To compare different design approaches for IVUS systems.
- To discuss the correlation of IVUS images with other diagnostic methods and future applications.
Main Methods:
- Review of technical design considerations for catheter imaging systems.
- Comparison of multiple-element versus mechanical transducer approaches.
- Analysis of in vitro and in vivo studies correlating IVUS images with histology and angiography.
Main Results:
- Early studies show correlation between intravascular ultrasound images and histologic sections (in vitro).
- In vivo studies demonstrate correlation between intravascular ultrasound images and angiography.
- Technical merits of multiple-element versus mechanical approaches are discussed.
Conclusions:
- Intravascular ultrasound imaging has potential clinical applications.
- Future technical developments are anticipated to enhance IVUS capabilities.
- The technology shows promise for improved cardiovascular diagnostics.