Temperature profiles of 980- and 1,470-nm endovenous laser ablation, endovenous radiofrequency ablation and endovenous steam ablation

  title={Temperature profiles of 980- and 1,470-nm endovenous laser ablation, endovenous radiofrequency ablation and endovenous steam ablation},
  author={Wendy S. J. Malskat and M. A. L. Stokbroekx and C.W.M. van der Geld and Tamar E C Nijsten and Renate van den Bos},
  journal={Lasers in Medical Science},
Endovenous thermal ablation (EVTA) techniques are very effective for the treatment of varicose veins, but their exact working mechanism is still not well documented. The lack of knowledge of mechanistic properties has led to a variety of EVTA protocols and a commercially driven dissemination of new or modified techniques without robust scientific evidence. The aim of this study is to compare temperature profiles of 980-and 1,470-nm endovenous laser ablation (EVLA), segmental radiofrequency… 

Comparing 1470- and 980-nm diode lasers for endovenous ablation treatments

Evaluating the effectiveness of endovenous laser ablation in saphenous veins found EVLA with the 1470-nm laser have less energy deposition for occlusion and better treatment response.

Review of Endovenous Thermal Ablation of the Great Saphenous Vein: Endovenous Laser Therapy Versus Radiofrequency Ablation

Efficacy and recurrence rate seem to favor EVLT, whereas postoperative pain and bruising favor RFA, and further studies are needed to validate the significance of the differences found.

No significant difference between 1940 and 1470 nm in endovenous laser ablation using an in vitro porcine liver model

Comparison of thermal spread and carbonisation of EVLA using these two wavelengths, in the porcine liver model, found no evidence to support reduced power or LEED when using 1940 nm, but 1940 nm may be more advantageous than 1470 nm when ablating small thin-walled veins, near to the skin.

Endoluminal application of glass‐capped diffuser for ex vivo endovenous photocoagulation

The proposed glass-capped diffusing applicator can be a feasible therapeutic device for EVLA with minimal complications by entailing low maximum temperatures and uniform tissue denaturation in the venous tissue.

Efficacy and Safety of Endovenous Laser Ablation in Very Large and Tortuous Great Saphenous Veins.

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  • Medicine
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  • 2015

Ultrasound and photoacoustic imaging for enhanced image-guided endovenous laser ablation procedures

The utility of US and PA in tracking fiber tip in a set of vessel-mimicking phantoms indicated artifact-free and accurate detection of the fiber tip using PA in contrast to US, and the utility of PA for real-time monitoring of temperature increase during laser ablation procedures was demonstrated.

Efficacy of High Temporal Frequency Photoacoustic Guidance of Laser Ablation Procedures

The proposed high frame rate (500 Hz), combined ultrasound (US), and PA-guided ablation system will potentially enhance the outcome of ablation procedures by providing location and temperature feedback.

Photothermal ablation of liver tissue with 1940-nm thulium fiber laser: an ex vivo study on lamb liver

Investigation of the ablation efficiency of 1940-nm thulium fiber laser on liver tissue while utilizing a real-time measurement system to monitor the temperature rise in adjacent tissues found a strong correlation between the rate of temperature change and ablation area.



Endovenous laser ablation of great saphenous veins using a 1470 nm diode laser and the radial fibre – follow-up after six months

Evaluated EVLA of GSV with a radially emitting laser fibre by using a 1470 nm diode laser is a safe and efficient treatment option and postoperative ecchymoses in the track of the treated GSV was rare.

Endovenous laser ablation: mechanism of action

The existing histological reports confirm that EVLA produces a transmural vein wall injury, typically associated with perforations and carbonization, which causes permanent vein closure through a high-temperature photothermolytic process at the point of contact between the vein and the laser.

Endovenous simulated laser experiments at 940 nm and 1470 nm suggest wavelength-independent temperature profiles.

Thermal Damage of the Inner Vein Wall During Endovenous Laser Treatment: Key Role of Energy Absorption by Intravascular Blood

  • T. ProebstleM. Sandhofer H. Lehr
  • Medicine
    Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.]
  • 2002
Intravascular blood plays a key role for homogeneously distributed thermal damage of the inner vein wall during EVLT, and EVLT-induced vessel wall injury was confined to the site of direct laser impact.

Saphenous Laser Ablation at 1470 nm Targets the Vein Wall, Not Blood

Closure with a dramatic reduction in energy when compared to a 980-nm wavelength control demonstrated a marked reduction in postoperative pain and ecchymosis; this implies that vein-wall perforations are minimized with this system.

Endovenous Treatment of the Great Saphenous Vein Using a 1,320 nm Nd: YAG Laser Causes Fewer Side Effects than Using a 940 nm Diode Laser

ELT of the GSV using a 1,320 nm Nd:YAG laser causes fewer side effects compared with 940 nm diode laser ELT.

Comparison of 980 nm laser and bare-tip fibre with 1470 nm laser and radial fibre in the treatment of great saphenous vein varicosities: a prospective randomised clinical trial.

  • S. DoğancıU. Demirkılıç
  • Medicine
    European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery
  • 2010