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Methods: Forty-three healthy Chinese female http://www.selleckchem.com/products/CHIR-99021.html subjects aged 39�C64 attending screening mammography were recruited. Twenty were premenopause and 23 were postmenopause, the latter had a mean of 3.6 year since menopause. Fractal analysis of bilateral breast tissue pattern in both digital cranio-caudal (CC) and medio-lateral oblique (MLO) projections was conducted. Fractal analyses were performed using Image J. Results: The results showed that there were positive correlations between age and fractal dimension in CC (r?=?0.755; P? http://www.selleckchem.com/products/LY294002.html Postmenopausal women had a fractal dimension of CC view (1.78?��?0.04 vs. 1.71?��?0.07) and MLO view (1.73?��?0.07 vs. 1.66?��?0.13) significantly greater than that of premenopausal women (P? http://www.selleck.cn/products/wortmannin.html not indicate that abnormalities are present in the breast. Interpretation of the mammographic images has to consider the anthropometric parameters so as to avoid misdiagnosis. The significance of the findings may also serve as normal reference for comparison with abnormal breast tissue changes. YM Lai,1 SK Chan,1 WY Chan,1 MK Chow,1 KM Luk,1 VWY Hung2 and L Qin2 1The Hong Kong Polytechnic University, Hong Kong, 2The Chinese University of Hong Kong, Hong Kong Aim: To study the effect of exercise and menstruation on bone status using calcaneal quantitative ultrasound (QUS). Method: 71 Chinese female university students aged 18 to 24 were invited. According to their menstruation status and exercise level, they were categorised into four groups: menstruation with (n?=?18) and without high impact exercise (n?=?28), irregular menstruation with (n?=?10) and without high impact exercise (n?=?15). Questionnaire was administered to collect data on their medical history, anthropometric characteristics and calcium intake. Foot dimensions were recorded. Speed of Sound (SOS) and broadband ultrasound attenuation (BUA) were measured on both feet using a calcaneal ultrasound densitometer.