Mammographic breast glandularity in Malaysian women: data derived from radiography

Jamal, Noriah and Ng, Kwan Hoong and McLean, Donald and Looi, Lai Meng and Moosa, Fatimah (2004) Mammographic breast glandularity in Malaysian women: data derived from radiography. American Journal of Roentgenology, 182 (3). pp. 713-7. ISSN 0361-803X, DOI 14975974.

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OBJECTIVE. This study was undertaken to estimate mammographic breast glandularity in Malaysian women from radiographic data. MATERIALS AND METHODS. A mammography X-ray unit was used to expose different thicknesses of phantom material of varying glandular and adipose composition at 27 kV. A least squares method was then used to fit the combined data of phantom glandularity, thickness, and milliampere-seconds. The subsequent fitted equation was then applied to calculate breast glandularity for 705 women who underwent diagnostic mammography, who were drawn equally from the three major ethnic groups of Malaysia: Malay, Chinese, and Indian. The difference in breast glandularity among ethnic groups was tested for significance using the nonparametric Kruskal-Wallis test. RESULTS. The fitted equation gave an absolute error of less than or equal to ± 8% when applied to the data from phantom exposure. The average breast glandularity of the study sample was 48.9% ± 18.7%. Breast glandularity was found to decrease with breast thickness and age. CONCLUSION. No significant difference was seen in breast glandularity among the ethnic groups (p > 0.05, Kruskal-Wallis test).

Item Type: Article
Additional Information: Department of Radiology, University of Malaya, Kuala Lumpur
Uncontrolled Keywords: Adipose Tissue/radiography; Ethnic Groups
Subjects: R Medicine > R Medicine (General)
Divisions: Faculty of Medicine
Depositing User: Mr. Faizal Hamzah
Date Deposited: 15 Mar 2011 03:31
Last Modified: 03 Jan 2020 04:14

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