Phaorod, Jiranthanin, Chaiwat Phaorod, Wattana Wongsanon, Petcharakorn Hanpanich, and Jiraporn Srinakarin. 2013. “Applying the Pillow Can Reduce Radiation Dose in Computed Tomography of the Brain”. Srinagarind Medical Journal 28 (1):87-92. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/11106.