Female pelvis 


Normal size of yolk sac: <5.6 mm (6 mm) 


-Discriminatory sizes 


Should see: 


1. Gestational sac (EV) by Beta hcg-1900MIU/ml 


2. Fetal heartbeat by CRL>5 mm (EV) 
 


On EV: 


Should see: 


Yolk sac if             MSD> 8 mm 


Embryonic pole ifMSD> 16 mm 
 


On Transadbdominal Scan: 


Should see: 


Yolk sac if             MSD> 20 mm 


Embryonic pole if MSD> 25 mm 
 


Ovaries:

Normal sizes: 


                  Mean volume           Upper limit of normal vol. (cc) 


0-3 months                      1                                            4

3 mos-2 years                 1                                            3

Premenarchal (3-15y)      3                                            9

Menstrual                      10                                          22

Postmenopausal             6                                          14

>15yrs postmenopausal  2                                            4 
 


Endometrium: 


Premenopausal:  >/= 15mm 


Postmenopausal

(With bleeding):    >      5mm 
 


Postmenopausal

(Without bleeding): >      8mm