“…Radiological technology has been investigated with regard to the reduction of radiation exposure (Ben-Shlomo et al, 2016; Den Harder et al, 2016; Goodman and Amurao, 2012; Iezzi et al, 2012; McCollough, 2012; Sarti et al, 2012; Thabet et al, 2012), the positioning and clarity with which the area under observation is visualised (Hospers et al, 2009; Huang and Schweitzer, 2014; Kijowski et al, 2006; Siddiqui et al, 2014), and the improvement of image quality through advances in devices and systems (Hamer et al, 2005; Inamura and Kim, 2011; Körner et al, 2007; Uffmann et al, 2005; Utsunomiya et al, 2013). Recently, more hospitals have been switching from the use of X-ray film to filmless diagnosis via images displayed on monitors, meaning that images can be rapidly transferred after scanning, and clear images can be accessed on hospital information system (HIS) terminals at any time (Jeong et al, 2014; Utsunomiya et al, 2013). Consequently, even with imaging in the general wards using a portable X-ray machine, it is possible to immediately obtain a digital image of the same quality as one taken in the X-ray room.…”