Mammographic breast glandularity in Malaysian women: data derived from radiography
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...
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American Roentgen Ray Society (ARRS)
2004
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| Online Access: | http://eprints.um.edu.my/491/ https://www.ajronline.org/doi/10.2214/ajr.182.3.1820713 |
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| author | Jamal, Noriah Ng, Kwan Hoong McLean, Donald Looi, Lai Meng Moosa, Fatimah |
| author_facet | Jamal, Noriah Ng, Kwan Hoong McLean, Donald Looi, Lai Meng Moosa, Fatimah |
| author_sort | Jamal, Noriah |
| building | UM Library |
| collection | Institutional Repository |
| content_provider | Universiti Malaya |
| content_source | UM Research Repository |
| continent | Asia |
| country | Malaysia |
| description | 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). |
| format | Article |
| id | my.um.eprints-491 |
| institution | Universiti Malaya |
| publishDate | 2004 |
| publisher | American Roentgen Ray Society (ARRS) |
| record_format | eprints |
| spelling | my.um.eprints-4912020-01-03T04:14:13Z http://eprints.um.edu.my/491/ Mammographic breast glandularity in Malaysian women: data derived from radiography Jamal, Noriah Ng, Kwan Hoong McLean, Donald Looi, Lai Meng Moosa, Fatimah R Medicine (General) 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). American Roentgen Ray Society (ARRS) 2004-03 Article PeerReviewed 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. https://www.ajronline.org/doi/10.2214/ajr.182.3.1820713 14975974 |
| spellingShingle | R Medicine (General) Jamal, Noriah Ng, Kwan Hoong McLean, Donald Looi, Lai Meng Moosa, Fatimah Mammographic breast glandularity in Malaysian women: data derived from radiography |
| title | Mammographic breast glandularity in Malaysian women: data derived from radiography |
| title_full | Mammographic breast glandularity in Malaysian women: data derived from radiography |
| title_fullStr | Mammographic breast glandularity in Malaysian women: data derived from radiography |
| title_full_unstemmed | Mammographic breast glandularity in Malaysian women: data derived from radiography |
| title_short | Mammographic breast glandularity in Malaysian women: data derived from radiography |
| title_sort | mammographic breast glandularity in malaysian women: data derived from radiography |
| topic | R Medicine (General) |
| url | http://eprints.um.edu.my/491/ https://www.ajronline.org/doi/10.2214/ajr.182.3.1820713 |
| url_provider | http://eprints.um.edu.my/ |