Veins which have been dark purple, blue or precisely the same color because the skin. Based upon skin shade, these changes may be more difficult or easier to see. 使用射频或激光能量的导管手术。该手术是较大静脉曲张最常使用的治疗方法。医疗护理专业人员将一根称为导管的细管放入扩张的静脉。然后用射频或激光能量加热导管末端。拔出导管时，高温会使静脉塌陷、闭锁，从而达到破坏静脉的目的。 Painles... https://www.sgvascularctr.com/varicose-vein-treatment-in-singapore-comprehensive-advice-for-optimal-results/