Suyudi, Imam, et al. “PENGARUH VARIASI FOCUS FILM DISTANCE (FFD) TERHADAP CARDIOTHORACIC RATIO (CTR) DAN SIGNAL-TO-NOISE RATIO (SNR)”. Jurnal Kesehatan, vol. 15, no. 2, Oct. 2025, pp. 123-9, doi:10.38165/jk.v15i2.449.