Mammographic classification of breast lesions amongst women in Enugu, South East Nigeria.

Objectives: The study was to classify lesions identified on mammograms using Breast Imaging Reporting and Data System (BIRADS) grading method. This was in view of ascertaining the rate of occurrence of breast malignancy of the studied population.

Methods: A retrospective cohort study of 416 mammographic reports of women was undertaken.

Determination of the sonic properties of a Nigerian quartz for ultrasonic transducer.

Background: There is abundant quartz deposit in Nigeria which has been used for export and building purposes. However, its electrical and piezoelectric properties have not been studied. Thus, whether it can be used as raw material for the indigenous electric industries is unknown to date.