Ultrasound elastography: principles, techniques, and clinical applications

Area of Science:

• Medical Imaging
• Biophysics
• Diagnostic Techniques

Background:

• Ultrasound elastography, or virtual palpation, images tissue elasticity.
• Tissue mechanical changes often correlate with pathological changes, making elastography valuable for disease detection.
• Existing methods primarily relied on pre- and post-compression image comparisons.

Purpose of the Study:

• To review the principles and techniques of ultrasound elastography.
• To discuss the expanding clinical applications of ultrasound elastography.
• To highlight advancements in elastography beyond traditional compression methods.

Main Methods:

• Review of established ultrasound elastography principles.
• Description of various ultrasound-based elastography techniques, including strain imaging.
• Explanation of newer methods utilizing external vibration and acoustic radiation force.
• Discussion of techniques tracking transient phenomena like shear waves for quantitative elasticity measurement.

Main Results:

• Ultrasound elastography effectively detects and assesses various pathologies by imaging tissue elasticity.
• Newer elastography techniques offer quantitative measurements of tissue elasticity.
• Clinical applications are increasing, demonstrating broad utility.

Conclusions:

• Ultrasound elastography is a valuable tool for diagnosing and monitoring numerous conditions.
• Advancements in elastography techniques enhance its diagnostic capabilities.
• The expanding clinical use underscores the significance of ultrasound elastography in modern medicine.