Development of an adjustable model breast for mammographic dosimetry assessment in Taiwanese women

Shang Lung Dong, Tieh Chi Chu, Gong Yau Lan, Yung Chien Lin, Yu Hsiu Yeh, Keh Shih Chuang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

OBJECTIVE. The currently used model breast for mammographic dosimetry assessment lacks the flexibility to change dimensions. The aim of this study was to develop an adjustable model breast for mammographic dosimetry assessment of Taiwanese women. MATERIALS AND METHODS. A retrospective review of 4226 craniocaudal (CC) views was conducted. The geometry of the model breast was defined as a semielliptical cylinder. Breast parameters, including compressed breast thickness, chest wall-to-nipple distance, compressed breast width, and percentage glandular content, were measured and analyzed. To validate the adjustable model breast, 44 mammograms were obtained. The expected values from the adjustable model breast were compared with the measured values. RESULTS. The average values of compressed breast thickness, chest wall-to-nipple distance, compressed breast width, and percentage glandular content of the women studied were 4.1 cm, 6.9 cm, 16.9 cm, and 54%, respectively. Variations of chest wall-to-nipple distance, compressed breast width, and percentage glandular content can be expressed as functions of compressed breast thickness, and the adjustable model breast developed was based on compressed breast thickness. The average area of the CC view obtained is a factor of 0.81 lower than that defined by the American College of Radiology protocol. For validation, the difference in average values between the expected and measured did not exceed 0.5 cm in breast dimensions and 6% in percentage glandular content. CONCLUSION. Compressed breast thickness is useful for quantifying dimensions and percentage glandular content of a model breast. The adjustable model breast developed in this study can offer greater flexibility in the determination of breast dimensions for mammographic dosimetry assessment of Taiwanese women.

Original languageEnglish
JournalAmerican Journal of Roentgenology
Volume196
Issue number4
DOIs
Publication statusPublished - Apr 1 2011
Externally publishedYes

Fingerprint

Breast
Nipples
Thoracic Wall
Radiology

Keywords

  • Breast
  • Dimensions
  • Mammography
  • Percentage glandular content

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Development of an adjustable model breast for mammographic dosimetry assessment in Taiwanese women. / Dong, Shang Lung; Chu, Tieh Chi; Lan, Gong Yau; Lin, Yung Chien; Yeh, Yu Hsiu; Chuang, Keh Shih.

In: American Journal of Roentgenology, Vol. 196, No. 4, 01.04.2011.

Research output: Contribution to journalArticle

Dong, Shang Lung ; Chu, Tieh Chi ; Lan, Gong Yau ; Lin, Yung Chien ; Yeh, Yu Hsiu ; Chuang, Keh Shih. / Development of an adjustable model breast for mammographic dosimetry assessment in Taiwanese women. In: American Journal of Roentgenology. 2011 ; Vol. 196, No. 4.
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abstract = "OBJECTIVE. The currently used model breast for mammographic dosimetry assessment lacks the flexibility to change dimensions. The aim of this study was to develop an adjustable model breast for mammographic dosimetry assessment of Taiwanese women. MATERIALS AND METHODS. A retrospective review of 4226 craniocaudal (CC) views was conducted. The geometry of the model breast was defined as a semielliptical cylinder. Breast parameters, including compressed breast thickness, chest wall-to-nipple distance, compressed breast width, and percentage glandular content, were measured and analyzed. To validate the adjustable model breast, 44 mammograms were obtained. The expected values from the adjustable model breast were compared with the measured values. RESULTS. The average values of compressed breast thickness, chest wall-to-nipple distance, compressed breast width, and percentage glandular content of the women studied were 4.1 cm, 6.9 cm, 16.9 cm, and 54{\%}, respectively. Variations of chest wall-to-nipple distance, compressed breast width, and percentage glandular content can be expressed as functions of compressed breast thickness, and the adjustable model breast developed was based on compressed breast thickness. The average area of the CC view obtained is a factor of 0.81 lower than that defined by the American College of Radiology protocol. For validation, the difference in average values between the expected and measured did not exceed 0.5 cm in breast dimensions and 6{\%} in percentage glandular content. CONCLUSION. Compressed breast thickness is useful for quantifying dimensions and percentage glandular content of a model breast. The adjustable model breast developed in this study can offer greater flexibility in the determination of breast dimensions for mammographic dosimetry assessment of Taiwanese women.",
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