Fig. 4From: Ultrasound-guided percutaneous laser ablation for papillary thyroid microcarcinoma: a retrospective analysis of 37 patientsMean volume increasing multiplier (MVIM) at each follow-up visit after PLA. The MVIM of the tumours was markedly higher than the baseline within 3 months post-PLA due to acute tissue oedema. The MVIM tended to relatively decrease after 6 months, probably due to the gradual absorption of carbonized necrotic tissueBack to article page