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Photoacoustic imaging of valves in superficial veins

✍ Scribed by Roy G.M. Kolkman; Nienke Bosschaart; Ben Kok; Ton G. van Leeuwen; Wiendelt Steenbergen

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
198 KB
Volume
38
Category
Article
ISSN
0196-8092

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✦ Synopsis

Abstract

Background and Objectives

In intravenous access to veins there is a risk of puncturing venous valves or blocking of the catheter by the valves. Therefore, we have investigated whether and how photoacoustic imaging (PAI), which visualizes the lumen of blood vessels, can be used to detect these valves.

Study Design/Materials and Methods

Venous valves in superficial veins on the dorsal side of the hand of human volunteers were located by palpation and visual inspection. Next, this location was imaged using PAI.

Results

In 16 of 21 human volunteers venous valves that were found by palpation could be observed by PAI as local discontinuities in the imaged vessel. From these images, four characteristic features by which venous valves can be recognized in photoacoustic images were identified.

Conclusions

PAI has the potential to be applied in the detection of venous valves. Lasers Surg. Med. 38:740–744, 2006. Β© 2006 Wiley‐Liss, Inc.

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