How to measure a folic in ovary as cycle days proceed

How do members measure a growing or dominat follicle??  This question arises as the technique for measuring follicle size  is not standardized .I am not talking of volume of follicle but mean diameter .How many us measures three diameters of a Dominat follicle and the mean is mentioned and trigger is decided/ or add extra HMG?? Ans; There are several approved methodology., For instance      measurements    may be taken from  the   Procedure 1:-outer edge  on one side to the inner   edge on the opposite side  is the most common method   or Procedure 2 :-from the outer edge of both sides  follicle . BUT follicles are rarely    spherical so that the examiner  must    decide   where to take measurements and usually selects     two or three positions that seem to most   accurately   portal  the real dimensions: last -Procedure 3: Two dimensions vs three diameters of a Dominat follicle àHow relevant it is?? Ans:-As  because   the choice  of where   to measure  is subjective  recording three dimensions offers little  advantage  over recording   to two  dimensions and  is impractical  when large numbers of  follicles  must be measured . Differences in how measurements are taken   can account for 1-2 mm differences    in recorded follicle  size.