Saputra Y, Bisra M. CONFORMITY TEST OF THE COLLIMATOR BEAM TO X-RAY ON DIAGNOSTIC X-RAY MACHINE AT THE RADIOLOGY INSTALLATION OF ARIFIN ACHMAD HOSPITAL, RIAU . MRJ [Internet]. 2021 Oct. 6 [cited 2024 Oct. 30];1(1):1-7. Available from: https://journal.univawalbros.ac.id/index.php/miror/article/view/59