Vanderbilt University researchers have developed a hand-held device to quantitatively measure tissue stiffness for medical monitoring. This device is non-invasive, low-cost, and can be used at the point of care.
Human body tissue stiffness is a vital measurement in a variety of medical applications such as skin lesion assessment and liver fibrosis staging. Current methods of measuring tissue stiffness, such as frequent biopsies and high-end ultrasound systems, are invasive, expensive, and labor-intensive. The device described here is non-invasive, inexpensive, and portable, allowing it to be used at the point of care of the patient.
- Tissue stiffness assessment for:
- Shallow pathologies (e.g. skin lesions, wound healing, and skin fibrosis or edema from radiation)
- Diffuse diseases (e.g. liver fibrosis)
- Assessment of biomaterials during research and quality insurance
- Hand-held device can be used at point of care
- Inexpensive compared to current technologies
- Non-invasive method eliminates the need for frequent biopsies
Technology Development Status
- Researchers have successfully prototyped both the physical device and processing algorithm
- Experiments have been conducted to compare the results of the device to traditional methods
Intellectual Property Status
Published US patent application:
Figure 1 By displacing tissue about 10 microns, a unique on-axis displacement signature is created which is then used to determine tissue stiffness.