Estimasi Resiko Radiasi Janin pada Pemeriksaan  Radiografi Pelvis

Giner Maslebu; Jodelin Muninggar; Satriya Ary Hapsara

doi:10.20527/flux.v14i1.3579

Estimasi Resiko Radiasi Janin pada Pemeriksaan Radiografi Pelvis

Giner Maslebu, Jodelin Muninggar, Satriya Ary Hapsara

Abstract

Sinar-X merupakan sumber radiasi pengion yang paling banyak digunakan untuk pemeriksaan diagnostik dalam aplikasi klinik. Radiasi pengion memang memberikan manfaat yang besar dalam pemeriksaan radiodiagnostik, namun paparan radiasi memiliki resiko yang berbahaya sehingga proteksi radiasi terhadap pasien atau pekerja di sekitar daerah smber radiasi perlu diperhatikan, terutama wanita hamil karena berdampak langsung kepada janin. Dalam penelitian digunakan pesawat radiologi planar dengan filter 2 mmAl, solid water phantom dengan ketebalan sebesar 20 cm yang merepresentasikan ketebalan Pelvis, dan Multimeter X-ray untuk pengukuran dosis x-ray pada Focus to Film Distance (FFD) berturut – turut adalah 100 cm, 110 cm, 120 cm, 130 cm, 140 cm dan 150 cm. Pada setiap FFD, digunakan tegangan mulai dari 70 kVp, 73 kVp, 77 kVp, 81 kVp, 85 kVp, 90 kVp hingga 96 kVp pada beban tabung 10 mAs. Penentuan estimasi dosis janin dilakukan dengan menggunakan program Fet.Dose V5. Hasil penelitian menunjukkan bahwa nilai faktor resiko radiasi terhadap janin sebanding dengan tegangan tabung (kVp) dan berbanding terbalik dengan jarak obyek ke sumber radiasi. Untuk satu kali iradiasi dengan pesawat sinar-x dengan pengaturan yang memungkinkan nilai faktor resiko radiasi tertinggi untuk janin diperoleh pada FFD 100 cm dan tegangan tabung 96 kVp sedangkan nilai faktor resiko radiasi terendah diperoleh saat FFD 150 cm dan tegangan tabung 70 kVp.

Keywords

pelvis, radiasi, resiko janin, sinar-x

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DOI: http://dx.doi.org/10.20527/flux.v14i1.3579