Sains Malaysiana 41(1)(2012): 133–140

EDR2 Film for Skin Dose Measurement in Coronary Angiography

(Pengukuran Dos Kulit dalam Koronari Angiografi Menggunakan Filem EDR2)

C.K. Ying & S. Kandaiya*

School of Physics, Universiti Sains Malaysia, 11700, Gelugor, Penang, Malaysia

Received: 2 March 2011 / Accepted: 10 June 2011

ABSTRACT

Patient skin dose measurements were performed at the cardiology department in a hospital in Penang, Malaysia using EDR films during coronary angiography (CA) procedures. The EDR2 film was first characterized in terms of dose and energy dependence as well reproducibility. For patient dose measurements, the films were placed on the table underneath the patient for an under couch tube position. A total of 27 CA procedures were studied. Results for peak skin doses (PSD) ranged from 35- 684 mGy while the dose area product (DAP) values were from 5.5 to 93.1 Gy cm2. DAP correlated reasonably with PSD for CA procedure (R2= 0.8212). The highest PSD value in this study is below the threshold dose value of 2 Gy for early transient skin injury recommended by the Food and Drug Administration (FDA 1994).

Keywords: Area Product; dose peak skin dose; EDR2 Film; interventional Cardiology

ABSTRAK

Pengukuran sinaran dos pesakit telah dijalankan di bahagian kardiologi, sebuah hospital di Pulau Pinang, Malaysia dengan menggunakan filem EDR2 semasa menjalankan prosedur koronari angiografi(CA). Pencirian filem EDR2 pada mulanya dilakukan dalam sebutan kebergantungan dos dan tenaga dan juga keupayaan kebolehpenghasilan semula. Untuk mengukur dos pesakit, filem EDR2 diletakkan di atas meja dan di bawah badan pesakit dengan tiub X-ray yang terletak di bawah meja. Sebanyak 27 prosedur CA dikaji. Keputusan nilai puncak dos kulit (PSD) adalah dalam julat 35 – 684 mGy, sementara pendaraban dos dengan luas (DAP) pula adalah dalam julat 5.5 – 93.1 Gy cm2. DAP berkorelasi secara wajar dengan PSD dalam prosedur CA (R2 = 0.8212). Nilai PSD maxima di dalam penyelidikan ini adalah di bawah nilai ambang dos 2 Gy untuk kecederaan kulit yang dicadangkan oleh Pentadbiran Makanan dan Ubat-ubatan (FDA 1994).

Kata kunci: Filem EDR2; intervensi kardiologi; pendaraban dos dengan luas; puncak dos kulit

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*Corresponding author; email: sivamany@usm.my