Figures & data
Figure 2. The definitions of parameters for volume assessment after RFA.
(1) Regrowth was defined as a more than 50% increase in total volume (Vt) compared to the previously reported smallest volume on ultrasonography.
(2) Residual vital volume (Vv) increase was defined as a more than 50% Vv increase compared to the previously reported smallest volume. The Vv was the incompletely treated vital nodule volume, noted on the 1- and 3-month follow-up ultrasounds.
(3) New growth was defined as new growth volume (Vn) not found in the early follow-up on ultrasonography. The size of the Vn was not the major consideration.
![Figure 2. The definitions of parameters for volume assessment after RFA.(1) Regrowth was defined as a more than 50% increase in total volume (Vt) compared to the previously reported smallest volume on ultrasonography.(2) Residual vital volume (Vv) increase was defined as a more than 50% Vv increase compared to the previously reported smallest volume. The Vv was the incompletely treated vital nodule volume, noted on the 1- and 3-month follow-up ultrasounds.(3) New growth was defined as new growth volume (Vn) not found in the early follow-up on ultrasonography. The size of the Vn was not the major consideration.](/cms/asset/74925e47-b397-4718-9778-f5d06fc3ffc2/ihyt_a_2112305_f0002_c.jpg)
Table 1. Demographic characteristics of patients before RFA based on nodule volume.
Table 2. Treatment outcomes in the subgroups at each follow-up period after RFA.