Analisis Kontur Isodosis Paparan Radiasi Sinar-X di Instalasi Radiologi UPT Rumah Sakit Umum Daerah Madani Palu: (Analysis of Contour Isodosis of X-Ray Radiation Exposure at the Radiology Installation at the Madani Palu General Hospital). Gravitasi. 2020;19(1):20-23. doi:10.22487/gravitasi.v19i1.15105