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Updated: Jun 19, 2026

Blood Flow Imaging with Ultrafast Doppler

Blood Flow Imaging with Ultrafast Doppler

Published on: October 14, 2020

Flow imaging by high speed transmission tomography.

Geir Anton Johansen¹, Uwe Hampel, Bjørn Tore Hjertaker

¹University of Bergen, Department of Physics and Technology, Bergen, Norway. geir.johansen@ift.uib.no

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine

|October 13, 2009

Summary

Fourth generation medical X-ray scanners are too slow for dynamic process imaging. This study presents two high-speed tomographic imaging systems capable of thousands of images per second, overcoming limitations in capturing fast processes.

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Last Updated: Jun 19, 2026

Blood Flow Imaging with Ultrafast Doppler

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Published on: October 14, 2020

Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy (ATOM)

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Area of Science:

Medical Imaging
Process Engineering
Physics

Background:

Fourth-generation medical X-ray scanners with rotating sources and fixed detectors are too slow for dynamic process imaging.
Inconsistent measurements and motion blurring occur when imaging speeds do not match process dynamics.

Purpose of the Study:

To develop high-speed tomographic imaging systems for capturing rapid process dynamics.
To demonstrate the feasibility of achieving image rates significantly higher than current medical X-ray scanners.

Main Methods:

Development of two distinct high-speed tomographic imaging systems.
Utilizing advanced X-ray source and detector configurations for rapid data acquisition.

Main Results:

Achieved image rates of several thousand images per second.
Demonstrated the capability to image fast dynamic processes without motion blur or inconsistent measurements.

Conclusions:

High-speed tomographic imaging is achievable and essential for studying dynamic processes.
The presented systems offer a significant advancement over existing medical X-ray scanner technologies for process analysis.