| Title | The heat-pipe resembling action of boiling bubbles in endovenous laser ablation |
|---|---|
| Published in | Lasers in Medical Science, Vol. 25, No. 6, p.907-909. ISSN 0268-8921. |
| Author | Geld, van der C.W.M. (Cees); Bos, van den R.R. (Renate); Ruijven, van P.W.M. (Peter); Nijsten, T.E.C. (Tamar); Neumann, H.A.M. (Martino); Gemert, van M.J.C. (Martin) |
| Date | 2010-11-01 |
| Language | English |
| Type | article |
| Abstract | Endovenous laser ablation (EVLA) produces boiling bubbles emerging from pores within the hot fiber tip and traveling over a distal length of about 20 mm before condensing. This evaporation-condensation mechanism makes the vein act like a heat pipe, where very efficient heat transport maintains a constant temperature, the saturation temperature of 100°C, over the volume where these non-condensing bubbles exist. During EVLA the above-mentioned observations indicate that a venous cylindrical volume with a length of about 20 mm is kept at 100°C. Pullback velocities of a few mm/s then cause at least the upper part of the treated vein wall to remain close to 100°C for a time sufficient to cause irreversible injury. In conclusion, we propose that the mechanism of action of boiling bubbles during EVLA is an efficient heat-pipe resembling way of heating of the vein wall. |
| Publication | http://hdl.handle.net/1765/20209 |
| Persistent Identifier | urn:NBN:nl:ui:15-1765/20209 |
| Metadata | XML |
| Repository | Erasmus University Rotterdam |
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