Patient doses in mammography screening examinations in Lithuania have been investigated within a period between 2003 and 2009. In vivo dose measurements were performed using thermoluminescence dosimetry (TLD) technique. Interactive database MAMOLIT was created, which allowed calculating of patient’s doses, documenting of measured and calculated doses and other parameters of the mammography screening examination, following up of the frequency of patient related X-ray examinations, and analysing of the collected data from different points of view. Reference level of 2.4 mGy of the average glandular dose was set for mammography screening in Lithuania on the base of the obtained results. Present paper summarises gathered experience and outlines some problems which may occur when performing dose measurements during mammography screening examinations of patients.