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Updated: May 17, 2026
10:46
Doppler Optical Coherence Tomography of Retinal Circulation
Published on: September 18, 2012
A comparison of Doppler optical coherence tomography methods.
Gangjun Liu1, Alexander J Lin, Bruce J Tromberg
1Beckman Laser Institute, University of California, Irvine, Irvine, CA 92617, USA ; Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92617, USA.
Biomedical Optics Express
|October 20, 2012
Summary
We compared three Doppler ultrasound methods for quantifying blood flow and mapping vasculature. The intensity-based Doppler variance (IBDV) method offers high-resolution imaging with simpler processing, making it suitable for rapid analysis and vascular mapping.
Area of Science:
- Medical imaging
- Ultrasound technology
- Biomedical engineering
Background:
- Quantitative flow measurement and vascular imaging are crucial in medical diagnostics.
- Existing Doppler ultrasound methods have limitations in sensitivity, angle dependence, and processing complexity.
- Phase-resolved color Doppler (PRCD), phase-resolved Doppler variance (PRDV), and intensity-based Doppler variance (IBDV) are advanced techniques for flow analysis.
Purpose of the Study:
- To conduct a detailed comparison of PRCD, PRDV, and IBDV ultrasound methods.
- To evaluate their performance in quantifying flow speed and mapping vascular networks.
- To assess their suitability for different clinical and research applications.
Main Methods:
- Comparative analysis of PRCD, PRDV, and IBDV techniques.
- Assessment of flow quantification range and sensitivity to Doppler angle.
- Evaluation of image contrast for vascular mapping.
- Demonstration of a high-resolution inter-frame PRDV method.
- In vivo imaging of mouse brain and human skin using the three methods.
Main Results:
- All methods quantify flow within a specific range dependent on the A-line interval.
- PRCD excels with flow parallel to the beam; PRDV and IBDV are better for near-perpendicular flow.
- PRDV and IBDV exhibit Doppler angle dependency above a certain threshold.
- IBDV and PRDV provide superior contrast for vascular mapping compared to PRCD.
- IBDV demonstrates robustness against bulk motion and simpler processing for faster analysis.
- High-resolution imaging was achieved with the inter-frame PRDV method.
Conclusions:
- IBDV and PRDV are effective for vascular mapping, with IBDV being preferable for its motion insensitivity and simpler processing.
- Increasing the A-line time interval enhances sensitivity for all methods.
- The IBDV method provides high-resolution imaging with a relatively simple processing procedure, suitable for various applications.
- The study demonstrates the practical application and comparative advantages of these advanced Doppler techniques in vivo.
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