Related Experiment Videos
New and future developments in ultrasonic imaging
1Regional Medical Physics Department, Newcastle General Hospital, Newcastle upon Tyne, UK.
The British Journal of Radiology
|April 16, 1998
Summary
Recent advancements in medical imaging, particularly ultrasound, leverage digital signal processing (DSP) for enhanced resolution and accuracy. Future innovations promise adaptive imaging and automatic feature recognition for improved diagnostics and tissue characterization.
Area of Science:
- Medical Imaging Technology
- Ultrasound Physics
- Digital Signal Processing
Background:
- Medical imaging technology has seen significant advancements, particularly in ultrasound.
- Improvements in transducer materials, electronic noise reduction, and filtering have enhanced dynamic range and sensitivity.
Purpose of the Study:
- To review recent developments in medical imaging technology, focusing on ultrasound.
- To discuss the application of digital signal processing (DSP) to radiofrequency (RF) echo signals.
- To predict future advancements in medical imaging driven by DSP.
Main Methods:
- Discussion of improvements in transducer materials, matching, bandwidth, and sensitivity.
- Analysis of enhanced dynamic range through increased sensitivity, reduced noise, and efficient filtering.
- Exploration of digital signal processing (DSP) techniques for radiofrequency (RF) echo signals, including beam forming and synthetic aperture.
Main Results:
- Digital signal processing (DSP) enables precise filtering, beam forming, synthetic aperture, and parallel receive beam forming.
- Current technologies include 1.5 D arrays, 3 D scanning, ultrasound computed tomography (UCT), harmonic imaging with contrast agents, and elastography.
- Future developments will utilize DSP for parallel transmissions, adaptive transmission and receive processing, and automatic feature recognition.
Conclusions:
- Future ultrasound imaging will feature greater spatial and temporal resolution, improved Doppler accuracy, and adaptive processing.
- Automatic feature recognition will enhance compound scanning, quantitative analysis of acoustic speed, and arterial plaque morphology investigation.
- Emerging techniques include contrast-free harmonic imaging, advanced 3 D scanning with 2 D phased arrays, and ultrasound-based tissue property measurements.