Intracavitary gynecological brachytherapy use as aparameter for dose distribution the relationship among de length of pear in the three axes directions regards ICRU 38. The ratio h/w, h/t gives us a parameter to figure it how the uterus and vagina are covered. This work correlates these ratios with the dwell times inside the uterus (Tu) and vagina (Tv) intending to know if we can use these times as parameters for the dose shape distribution. It was made an optimized treatment planning for 120 sessions of 6 Gy each one, following ABS recommendations, the ICRU 38, and 89. The planning system used is HDRplus3.0.4 with an HDR EZAG‐ BEBIG Co0.A86 brachytherapy machine with Cobalt 60. Taking into account the time modulation in tandem and the time differences between the left and right irradiation in the vagina, It was studied the correlation variation with the number of sessions for the ratio Tu/Tv with h/w and h/t. It was found a correlation between Tu/Tv with h/w and h/t, and it is dependent on the number of data. There is a good correlation between de ratio Tu/Tv with h/w and h/t respectively, which is stronger for the first one.