Recently, the technique of uterine cavity imaging, volume estimation, and quantification of deformity degree using automatic volume calculation (called SonoHysteroAVC; using SonoAVC software; GE Medical Systems, Zipf, Austria) during three-dimensional sonohysterography has been described (Ludwin et al., 2016). Uterine volume estimation is also potentially possible using Virtual Organ Computer-aided AnaLysis (VOCAL™; GE Medical Systems, Zipf, Austria), as for endometrial volume calculation (Martins et al., 2011).