Analysis of Pixel Values in Lateral Os Sacrum Radiographic Examinations Using Various Virtual Grid Ratios. JPK : Jurnal Proteksi Kesehatan [Internet]. 2025 Jul. 17 [cited 2026 Feb. 2];14(1):41-6. Available from: https://jurnal.pkr.ac.id/index.php/JPK/article/view/1124