Dynamic optical coherence tomography of chronic venous ulcers

Area of Science:

• Medical imaging
• Vascular biology
• Wound healing research

Background:

• Chronic ulcers, particularly venous leg ulcers, pose a significant healthcare challenge.
• Current non-invasive methods for assessing wound blood perfusion are limited.
• Dynamic optical coherence tomography (D-OCT) visualizes superficial skin vascularization.

Purpose of the Study:

• To determine if D-OCT measurements provide novel information on vascularization during chronic wound healing.
• To investigate the utility of D-OCT in assessing vascular changes in venous ulcers.

Main Methods:

• 16 venous ulcers were monitored over 16 weeks.
• D-OCT was used to evaluate vessel morphology and density at the wound bed, borders, adjacent skin, and contralateral healthy skin.
• Temperature analysis was also performed.

Main Results:

• Distinct vascular patterns (clumps, lines, serpiginous) were observed in ulcer areas versus healthy skin.
• Increased vessel density was noted in the wound area compared to non-ulcerated skin.
• Non-healing wounds exhibited fewer specific vessel types and lower temperatures in the wound center.

Conclusions:

• D-OCT is a valuable non-invasive tool for examining and monitoring chronic venous ulcer healing.
• D-OCT imaging has the potential for early detection of healing disorders and differentiating ulcer types.
• This technology may enable tailored, patient-specific therapies for wound management.