Pengoptimuman parameter dedahan dalam mamografi digital medan penuh menggunakan rajah merit

Translated title of the contribution: Optimization of exposure parameters in full field digital mammography using figure of merit

Laila Suryani Elias, Eng May Lin, Ang Wee Chin, Abo Aziz Tajuddin, Shantini A. Arasaratnam, Suraya Aziz, Khairul Osman, Kanaga Kumari Chelliah

Research output: Contribution to journalArticle

Abstract

Mammography is used as a screening tool for early detection of breast cancer. However, the radiation dose used should be as low as possible to minimize any effects on asymptomatic woman while maintaining the diagnostic value of the image as mammography is done annually. This study was done to determine the optimum exposure parameter in exposure control mode (AEC) for two combinations of anode/filter which were molybdenum/molybdenum (Mo/Mo) and molybdenum/rhodium (Mo/Rh) using the Lorad Selenia digital mammography system at the Women's Breast Clinic, National Cancer Society (NCS). A CIRSO012A mammography research of phantom 4 cm thickness with 50% glandularity was exposed in the cranio-caudal projection. TLD 100H was used to measure the entrance surface air kerma (ESAK). The AGD values were then calculated from the ESAK values, incorporating three correction factors (g, c and s) according to Euref protocol. Image quality was evaluated using signal to noise ratio (SNR). Figure of Merit (FOM) which is the ratio of the square of SNR to the AGD shows that 30 kVp is the optimum exposure parameter for a 4 cm thickness phantom with the use of Mo/Rh and Mo/Mo anode/filter combination. Non-parametric Spearman correlation test showed a negative linear relationship between AGD and SNR with increasing tube voltage for both anode/filters.

Original languageUndefined/Unknown
Pages (from-to)299-303
Number of pages5
JournalSains Malaysiana
Volume39
Issue number2
Publication statusPublished - Apr 2010

Fingerprint

figure of merit
molybdenum
optimization
anodes
signal to noise ratios
rhodium
filters
breast
entrances
cancer
digital systems
air
selenium
screening
projection
tubes
dosage
electric potential
radiation

Keywords

  • Average glandular dose
  • Cirs012a phantom
  • Exposure
  • Full field digital mammography

ASJC Scopus subject areas

  • General

Cite this

Elias, L. S., Lin, E. M., Chin, A. W., Tajuddin, A. A., Arasaratnam, S. A., Aziz, S., ... Chelliah, K. K. (2010). Pengoptimuman parameter dedahan dalam mamografi digital medan penuh menggunakan rajah merit. Sains Malaysiana, 39(2), 299-303.

Pengoptimuman parameter dedahan dalam mamografi digital medan penuh menggunakan rajah merit. / Elias, Laila Suryani; Lin, Eng May; Chin, Ang Wee; Tajuddin, Abo Aziz; Arasaratnam, Shantini A.; Aziz, Suraya; Osman, Khairul; Chelliah, Kanaga Kumari.

In: Sains Malaysiana, Vol. 39, No. 2, 04.2010, p. 299-303.

Research output: Contribution to journalArticle

Elias, LS, Lin, EM, Chin, AW, Tajuddin, AA, Arasaratnam, SA, Aziz, S, Osman, K & Chelliah, KK 2010, 'Pengoptimuman parameter dedahan dalam mamografi digital medan penuh menggunakan rajah merit', Sains Malaysiana, vol. 39, no. 2, pp. 299-303.
Elias LS, Lin EM, Chin AW, Tajuddin AA, Arasaratnam SA, Aziz S et al. Pengoptimuman parameter dedahan dalam mamografi digital medan penuh menggunakan rajah merit. Sains Malaysiana. 2010 Apr;39(2):299-303.
Elias, Laila Suryani ; Lin, Eng May ; Chin, Ang Wee ; Tajuddin, Abo Aziz ; Arasaratnam, Shantini A. ; Aziz, Suraya ; Osman, Khairul ; Chelliah, Kanaga Kumari. / Pengoptimuman parameter dedahan dalam mamografi digital medan penuh menggunakan rajah merit. In: Sains Malaysiana. 2010 ; Vol. 39, No. 2. pp. 299-303.
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