Indonesian Journal of Cancer
Vol 1, No 3 (2007): Jul - Sep 2007

Evaluasi Dosis Glandular dalam Pemeriksaan Mammografi

Yubhar, Yulfiatry (Unknown)
Adi, Rachmat (Unknown)
-, Supriyanto (Unknown)
-, Pawiro (Unknown)
-, Kardinah (Unknown)



Article Info

Publish Date
01 Oct 2007

Abstract

Telah dilakukan pengukuran Dosis Rata-rata Glandular (Mean glandular Dose) pada pemeriksaan mammografi dengan menggunakan Thermoluminiscense Dosimeter(7LD) terhadap 49 pasien. Dosis yang terbaca pada TLD adalah Entrance Surface Dose (ESD) dengan nilai rata-rata yang didapat 7.6 ('bl 3.9) mGy. Untuk konversi ke nilai Mean Glandular Dose, nilai ESD dikalikan dengan nilai Dgn (ESD dengan faktor konversi average glandular dose per unit exposure) yang terkonversi dengan memperhitungkan prosentase glandular terhadap adipose. Data Dgn diperoleh dari perhitungan John M Boone yang menggunakan metode Monte Carlo yang masih tergantung dari nilai HVL dan ketebalan payudara. Prosentase glandular terhadap adipose dihitung dengan menggunakan metoda analisa film Nooriah Djamal. Kemudian nilai Dgn 0% glandular untuk kontribusi adipose maupun Dgn 100% glandular untuk kontribusi glandular diperoleh dari Tabel Dgn Boone. Nilai MGD yang diperoleh adalah 1.818 ('bl 0.615) mGy. Nilai masih dibawah limit yang direkomendasikan FDA {Food and Drug Administration) yaitu < 3 mGy.Kata kunci : mean glandular dose (MGD), entrance surface dose (ESD), thermoluminiscense dosimeter (TLD)ABSTRACTMean glandular Dose (MGD) during mammography has been determined for 49 patients using TLD. MGD numbers has been derived from the measured ESD (Entrance Surface Dose) by multiplicating ESD with converted Dp, (ESD with average glandular dose per unit exposure conversion factor) incorporating the glandular percentage to adipose percentage. Dgn data were obtained from Boone's Monte Carlo calculation and generally is a function of HVL values and breast thickness. The glandular percentage to adipose were obtained using Nooriah Djamal's methods of mammography film analysis Both 0% glandular Dgn for adipose contribution and 100% glandular DSu for glandular contribution were then obtained from Boone's table. Average Entrance Surface Dose (ESD) for 49 patients were found to be 7.6 ('bl 3.9) mGy. The average MGD for 49 patients were found to be 1.818 (bl 0.615) mGy. These values were generally below the recommended FDA (Food and Drug Administration) limit of 3 mGy.Key Words : mean glandular dose (MGD), entrance surface dose (ESD), thermoluminiscense dosimeter (TLD)

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Journal Info

Abbrev

ijoc

Publisher

Subject

Health Professions

Description

The Indonesian Journal of Cancer (official journal of the Dharmais Cancer Center Hospital) is a peer-reviewed, quarterly, open access journal. Submissions are reviewed under a broad scope of topics relevant to experimental and clinical cancer research. The journal publishes original research ...