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Advances in ultrasound.
Christopher J Harvey1, James M Pilcher, Robert J Eckersley
1Department of Imaging, Hammersmith Hospital, Imperial College School of Medicine, London, UK. charvey_99@yahoo.com
Clinical Radiology
|April 16, 2002
Summary
Recent advances in ultrasound technology and contrast media have significantly improved imaging resolution and expanded clinical applications. Future developments promise even greater diagnostic and therapeutic potential, rivaling other advanced imaging techniques.
Area of Science:
- Medical Imaging
- Biomedical Engineering
- Diagnostic Ultrasound
Background:
- Ultrasound (US) technology has evolved from early B-mode systems to high-resolution real-time imaging over three decades.
- Technological progress in electronics, computing, and transducer design has driven significant improvements in ultrasound practice.
Purpose of the Study:
- To review recent advancements in ultrasound technology and contrast media.
- To discuss future developments and expanding applications of ultrasound in clinical practice and research.
Main Methods:
- Review of technological innovations in electronics, computing, transducer materials, and digital signal processing.
- Exploration of novel imaging modes utilizing non-linear behavior of tissues and microbubble contrast agents.
- Examination of contrast-enhanced ultrasound (CEUS) and its impact on diagnostic capabilities.
Main Results:
- Enhanced spatial and contrast resolution achieved through improved transducer designs and digital signal processing.
- Novel non-linear imaging modes enable visualization of microcirculation.
- Microbubble contrast agents significantly broaden clinical and research applications, improving Doppler studies and enabling functional/quantitative assessments.
- Tissue-specific agents show potential to enhance ultrasound's accuracy in detecting focal liver lesions, comparable to CT and MRI.
Conclusions:
- Ultrasound technology, augmented by contrast media, offers expanding diagnostic and therapeutic capabilities.
- Future ultrasound applications include advanced functional imaging and targeted drug/gene delivery, with high-intensity focused ultrasound (HIFU) showing therapeutic promise.